CalliApril, 2017

Calli Campbell's paper is accepted as the finalist for the best student paper award in Phtovoltaic Specialists Conference (PVSC) this summer. Congratulations from the entire MBE Optoelectronics Group.!

XinhaoApril, 2017

Congratulations to Dr. Xinhao Zhao on receiving a prestigious award, Outstanding Graduate Student Research Arawd - Material Science & Engineering at 2017 SEMTE Celebration of Excellence. Well done! He deserves this award.

MaxMarch, 2017

This summer, Maxwell Lassise is travelling to the Air Force Research Laboratory (AFRL) at New Mexico state for summer interm. We are looking forward to have more collaborations with AFRL in the future.

yzhaoNovember, 2016

Congratulations to Dr. Yuan Zhao on his successful PhD defense and graduation from the group. His fantastic dissertation is entitled as "The Design and Demonstration of Monocrystalline CdTe/MgCdTe Double-Heterostructure Solar Cells." We thank him for his understanding of solar cell to the group and wish him prosperity in the future.

zlinNovember, 2016

Congratulations to Dr. Zhiyuan Lin on his successful PhD defense, entitled "Study of minority carrier lifetime and transport in InAs/InAsSb type-II superlattices using a real-time baseline correction method." We thank him for his contribution to the group. He will join HC SemiTek in China after graduation.

zheNovember, 2016

Congratulations to Dr. Zhaoyu He on his successful PhD defense and graduation from the group. His valuable dissertation is entitled as "MWIR and Visible nBn Photodetectors and Their Monolithically-Integration for Two Color Photodetector Applications." He will join OmniVision Technology in California on December, 2016.

Group PhotoNovember, 2016

The whole group, its alumni and their families total of 34 people, celebrated the 20th anniversary of MBE Optoelectronics Group at Page, AZ, where we visited Horseshoe bend, Antelope Canyon and Lake Powell, and had several valuable presentations given by group alumni and current members. Thank Xinhao, Orkun, Xiaomeng, and Calli for organizing the event and all the participants for their participating! Happy birthday MBE Optoelectronics Group!

XinhaoNovember, 2016

Congratulations to Dr. Xinhao Zhao on his successful PhD defense, entitled "Study of CdTe/MgxCd1-xTe Double Heterostructures and Their Application in High Efficiency Solar Cells and in Luminescence Refrigeration". Xinhao will join the intel team in Chandler, AZ  after graduation.

ASU_logoOctober, 2016

For the second consecutive year, Arizona State University is the nation's most innovative school, according to U.S. News & World Report rankings. The back-to-back No.1 rankings demonstrate that the news magazine's annual poll recognizes ASU's overarching approach, rather than a single initiative or moment.

gchenSeptember, 2016

The group welcomes our new postdoctoral research scientist Dr. Guopeng Chen. Guopeng earned his Ph.D in Electrical Engineering from The City College of New York and specialized in Molecular Beam Epitaxy (MBE) growth and characterization of semiconductor nanostructure. He will help leading several MBE projects here at ASU.

PWangJDingAugust, 2016

We are excited to welcome our new members, Peng Wang and Jia Ding. Peng will be a postdoctoral research scientist. He earned his Ph.D in Microelectronics and Solid State Electronics from Shanghai Institute of Microsystem and Information Technology and specialized in III-V Optoelectronics grown by MBE. Jia will do his graduate studies at ASU. He received B.S in Applied Physics from University of Science and Technology of China. Welcome aboard guys!

fultonJuly, 2016

At the 43rd IEEE Photovoltaic Specialists Conference held in June in Portland, Oregon, Fulton Schools faculty and students received the most recognition of any single institution for their photovoltaics research presentations.
ASU representatives won far more awards than their representative share: two Best Student Paper out of total of 12, and two Best Poster awards. Additionally, seven ASU student papers were among Best Student Paper Finalists (Oral) and three were Best Poster Finalists. (see full report)

PVSC43June, 2016

This year’s Photovoltaic Specialists Conference (PVSC) has proved to be quite a success for the group and Arizona State as a whole. Among the many nominations and awards ASU received, the MBE team was a recipient of three nominations and ultimately two winners. Of two nominations for best poster, the poster titled “Monocrystalline CdTe/MgCdTe double-heterostructure solar cells with a ZnTe hole-contact and passivation layer” was awarded first place. In addition, the groups talk titled “Monocrystalline CdTe/MgCdTe double-heterostructure solar cells with 1.12 V Voc and 20.3% efficiency” won the best paper award in a very competitive field. Nearly 1500 submissions were made to this year’s PVSC with the topic of Chalcogenides, the area in which the teams papers were presented, making up the second largest field. Congratulations to all the authors for their excellent work. To the team members who represented the group so well, a special thanks: Jacob Becker, Calli Campbell, Xinhao Zhao and Yuan Zhao.

2016 PVSC Awards

Best Paper Award
Monocrystalline CdTe/MgCdTe double-heterostructure solar cells with 1.096 V Voc and 17.0 % efficiency

Yuan Zhao, Mathieu Boccard, Jacob Becker, Xin-Hao Zhao, Calli M. Campbell, Ernesto Suarez, Zachary Holman, Yong-Hang Zhang
Session: Advances in Buffer Layers, Interface and Back Contact Engineering - 8:30AM Fri Jun 10 - Area 2

Best Poster Award
Monocrystalline CdTe/MgCdTe double-heterostructure solar cells with a passivated ZnTe hole-contact layer
Jacob J. Becker, Calli M. Campbell, Yuan Zhao, Mathieu Boccard, Ernesto Suarez, Maxwell Lassise, Yong-Hang Zhang
Session: Contacts, Buffers, Substrates and Interfaces - 12:00PM Wed Jun 08 - Area 2

Best Poster Nomination
Radiative recombination dominated n-type monocrystalline CdTe/MgCdTe double-heterostructures
Yuan Zhao, Xin-hao Zhao, Yong-Hang Zhang
Session: Absorber Preparation and material properties - 10:30AM Tue Jun 07 - Area 2

YHZhangJune, 2016

Congratulations to Dr. Zhang on being interviewed by Arizona Horizon (starts from 17'). He is talking about the recent breakthrough in the CdTe thin film solar cell which is a great job done by MBE group and Zachary Holman's group. Making solar cell more available and cheaper is our main concerns.

CYTsaiMay, 2016

We would like to welcome new student Cheng-Ying Tsai to our group. He received his Bachelors in Electrical Engineering from National Tsing Hua University, Taiwan and Master degree from National Taiwan University, Taiwan. Cheng-Ying is excited to join us and to work in the field of MBE.


newsMay16
May, 2016

Our group's new record of solar cell efficiency recently is in the news. We are featured in ASU NOW and AZo Cleantech. Congratulations to all authors! Also, Prof. Zhang is interviewed by Money Radio on 5/24.






NatureEnergy

May, 2016

A paper authored by Y. Zhao, M. Boccard, S. Liu, J. Becker, X.-H. Zhao, C. M. Campbell, E. Suarez, M. B. Lassise, Z. Holman and Y.-H. Zhang from the MBE optoelectronics group and Zak Holman's group have been published in Nature Energy for the demonstration of a world-record monocrystalline CdTe solar cell.  The paper is titled "Monocrystalline CdTe Solar Cells with Open-Circuit Voltage of Over 1 V and Efficiency of 17%".  The link to the paper can be found here.






Calli

March, 2016

This summer, Calli Campbell is travelling to the University of Tokyo for ten weeks under an East Asia and Pacific Summer Institutes (EAPSI) fellowship funded jointly by the National Science Foundation (NSF) and the Japan Society for Promotion of Science (JSPS).  She will be conducting work on Si substrate preparation for MOCVD-grown InGaP/Si under Dr. Mazakazu Sugiyama and his team.  We look forward to the possibility of further collaboration with this excellent lab group upon her return.








SPIE

February, 2016

During the recent SPIE Photonics West 2016 conference, three invited talks in three different areas were given by two students from our group, Zhaoyu He and Xinhao Zhao, and a group alumni Dr. Elizabeth Steenbergen. Zhaoyu's talk was entitled "Optically-addressed CdTe(nBn)/InSb(nBn) UV-Visible/MWIR two-color photodetectors". Xinhao gave a talk entitled "MBE grown CdTe/MgCdTe double heterostructures and their potential for luminescence and refrigeration". Dr. Steenbergen (currently at Air Force Research Lab) gave her presentation titled "Photoluminescence studies of InAs/InAsSb type-II infrared superlattices". Congratulations to all of the presenters and their coauthors for their hard work to receive such honors!






fulton

December, 2015

Arizona State University was recently ranked the #1 most innovative school in the nation by U.S. News & World Report.  The Electrical Engineering program was also ranked #9 in the nation by the National Science Foundation Higher Education Research and Development Rankings.




xshen

November, 2015

Congratulations to Dr. Xiaomeng Shen on her successful PhD defense entitled "Study of structural, optical, and electrical properties of InAs/InAsSb superlattices using multiple characterization techniques".  Xiaomeng will enter the field of patent law after graduation.




Zhaoyu

October, 2015

Zhaoyu He's SPIE paper, titled "Optically-addressed visible/MWIR two-color photodetectors based on monolithically-integrated CdTe nBn and InSb PIN sub-photodetectors", has been promoted to an invited talk at the Quantum Sensing and Nano Electronics and Photonics XIII conference.  Congratulations to him and his coauthors Shi Liu, Calli Campbell, Max Lassise, Ying-Shen Kuo, and Zhi-Yuan Lin!




shi

August, 2015

Well done, Dr. Liu!  Shi Liu successfully defended his PhD thesis, entitled "Towards high-efficiency thin-film solar cell analysis to experimental exploration."  Shi will join the Intel team in Oregon after graduation.  Congratulations from the entire MBE Optoelectronics Group!




Xinhao

June, 2015

Congratulations to Xinhao Zhao, who's poster titled "Study of carrier lifetime degradation in (Zn)CdTe/MgCdTe double heterostructures" was selected as a finalist for the best poster award at this year's Photovoltaic Specialists Conference, and to coauthors Calli Campbell and Shi Liu for their contributions!





PVSC

June, 2015

Congratulations to Ying-Shen Kuo, Shi Liu, Xinhao Zhao, and Yuan Zhao for their successful presentations at this year's Photovoltaic Specialists Conference, and to coauthors Jacob Becker, Calli Campbell, Max Lassise, and Ernesto Suarez for their contributions to these projects.  Because of their hard work, the MBE Optoelectronics Group has attracted a lot of attention in the field of compound semiconductor solar cells.





jbecker

March, 2015

Congratulations to Jacob Becker on his selection as an ARCS Foundation Scholar. The Foundation awards students around the country at 54 different research universities, with scholarships in order to advance science and technology research in the United States. Jacob will continue to work within the group's solar team with support from ARCS Phoenix Chapter.





March, 2015

fulton

ASU’s Fulton Schools of Engineering has improved its ranking as one of the best engineering graduate schools in the country according to U.S. News and World Report Best Graduate Schools rankings.  FSE’s overall ranking is now 42nd in the country, while the electrical engineering program remains at 27th and the school of materials science and engineering rises six spots to 33rd.




Zhang

Feb, 2015

Congratulations to Dr. Zhang, who became an IEEE Fellow as senior member who has made outstanding contributions to the electrical and information technologies and sciences for the betterment of humanity and the profession.  Dr. Zhang was selected for his contributions to molecular beam epitaxy growth technology, infrared lasers and photodetectors.





Jan, 2015

Joe Margetis will join the group as a part-time PhD student.  He works full time as a Sr. Process Engineer as ASM, America where he is involved in epitaxial semiconductor materials research.  He has a B.S. in materials science and engineering from the University of Illinois at Urbana-Champaign and recently completed a master's degree in nanoscience at ASU.



ernesto

Jan, 2015

The group welcomes our new postdoctoral research scientist Ernesto Suarez.  Ernesto received his PhD in electrical engineering from the University of Connecticut and specializes in the design and fabrication of quantum semiconductor devices.  He will help manage the group's numerous MBE growth campaigns here at ASU.


FURI

Nov, 2014

Congratulations to Jorge Cardenas and Chris Wilp on winning the competitive Fulton Undergraduate Research Initiative fellowship.  Chris will be characterizing CdTe structures using X-ray diffraction and Jorge will be doing photoluminescence spectroscopy.


Michael

Oct, 2014

Congratulations to Michael DiNezza on the successful defense of his PhD thesis entitled "Monocrystalline ZnTe/CdTe/MgCdTe double heterostructure solar cells grown on InSb substrates by molecular beam epitaxy".  We wish Michael the best of luck in his future endeavors.


CWilp

Oct, 2014

The group is excited to welcome our newest member Christopher Wilp to the team. He is a junior undergraduate student studying electrical engineering. Chris has industry experience at ON Semiconductor where he worked with a discrete diode team as well as automated RF testing sequences.  He is an Arizona Board of Regents High Honors Scholar.


Weiquan Yang

Sept, 2014

The group would like to thank Dr. Weiquan Yang for his many contributions to our group, who has worked as a postdoc in the group on solar cell device processing and testing since September 2011. We wish him prosperity in his future career with AdValue Photonics.

 

Martyn

Sept, 2014

The group extends a warm welcome to new postdoc Martyn Fisher. Martyn obtained his PhD degree from Imperial College London and worked in the company Kromek before joining us. His researches includes luminescent solar concentrator and scintillation radiation detectors. He will study infrared detectors and/or solar cell in the group.

 

Tae-Sik Yoon

Aug, 2014

We are featured in the news! (link to the news) AVS Beneath the Surface newsletters just published an article about our work published in JVSTB. Congratulations to all the authors!

 

July, 2014

mlassise

Congratulations to Max Lassise for receiving the Barrett Electronic Materials Fellowship endowed by Craig and Barbara Barrett. This fellowship supports a new doctoral student in electrical or materials engineering doing research on electronic materials in the Fulton Schools of Engineering.



Tae-Sik Yoon

July, 2014

The group extends a warm welcome to Prof. Tae-Sik Yoon to join us as a visiting scholar until next February. He is an Associate Professor in the Department of Materials Science and Engineering, Myongji University in South Korea, and currently on sabbatical leave. He has experience with SiGe MBE and is currently studying nonvolatile memory devices.

 

MESA

July, 2014

Our recent Journal of Vacuum Science & Technology B article “Time-resolved and excitation-dependent photoluminescence study of CdTe/MgCdTe double heterostructures grown by molecular beam epitaxy” appears in the most read list this month. Congratulations to Xin-Hao Zhao and his coauthors Michael DiNezza, Shi Liu, Su Lin, and Yuan Zhao for the excellent work.

 

MESA

July, 2014

Congratulations to Dr. Zhang on being appointed the Associate Dean for Research in the Ira A. Fulton Schools of Engineering. He is expected to contribute his vast research and entrepreneurial experience to helping grow and improve the impact of FSE. In his own words: “I have enjoyed my career at ASU in the past 18 years. It is the time for me to pay back to the community through providing service and leadership in growing research and graduate education at the Fulton Schools of Engineering.” Read the whole story.

 

MESA

June, 2014

We would like to welcome new student Maxwell Lassise to our group. He recently graduated with honors from the University of Iowa with a Bachelor of Science in Physics. Max is pursuing a PhD degree in Electrical Engineering and is excited to continue working in the field of MBE optoelectronics.

 

MESA

June, 2014

The group extends a warm welcome to new group member Jorge Cardenas. He is an undergraduate attending Arizona State University studying electrical engineering and physics. Jorge is a New American University Dean’s Award Scholar and a Gary and Diane Tooker Scholarship for Engineering recipient. He is also a tutor in the ASU math tutoring center and is a member of Tau Beta Pi: Engineering Honors Society.

 

MESA

June, 2014

The group presented three papers this year in PVSC. Xin-Hao's work on the lifetime measurement of CdTe has been selected as the best student award finalist. Shi's work on the analysis of 300-nm GaAs cell has been nominated as the best poster award. Jacob's work also attracted a lot of attentions from industry as his work may have a direct impact on the space PV technology.

 

MESA

June, 2014

Congratulations to Xin-Hao Zhao and his coauthors Michael DiNezza, Shi Liu, Su Lin, and Yuan Zhao, as their recent article “Time-resolved and excitation-dependent photoluminescence study of CdTe/MgCdTe double heterostructures grown by molecular beam epitaxy” is featured as an Editorial’s Pick by Journal of Vacuum Science & Technology B.

 

MESA

June, 2014

Congratulations to our group alumnus Dr. Jiangbo Wang for his promotion to VP of HC SemiTek Corporation http://en.hcsemitek.com/, which is a public company in China specializing in blue and green LEDs with a revenue of $70 million in China. One of the company founders is also an ASU alumnus.

 

MESA

May, 2014

Our group has recently purchased and installed two used VG V80 MBE systems featuring in-line wobble-free manipulator stages. Additionally, the units have four retractable source cells. With the addition of these machines, we effectively double our growth capacity and will use them to explore new materials and devices.

 

MESA

April, 2014

Congratulations to our group alumni, Shui-Qing (Fisher) Yu, on his receiving the 2014 College of Engineering Imhoff Award at the University of Arkansas. This award was established to recognize faulty members who have excelled in research and teaching.

 

MESA

April, 2014

Congratulations to Jing Lu (a student of D.J. Smith) for being selected as a 2014 Microscopy & Microanalysis Meeting Scholar. The abstract of her talk (with Xiaomeng Shen as co-author) is entitled "Quantitative Study of Compositional Uniformity and Interfacial Strain in InAs/InAsSb Type-II Superlattices".

 

MESA

April, 2014

Congratulations to Xin-Hao Zhao for his paper entitled "Optical properties of monocrystalline CdTe/MgCdTe double heterostructures grown by molecular beam epitaxy" being selected as a finalist in the Best Student Paper Award Competition by the 40th Photovoltaic Specialists Conference. His co-authors are Michael J. DiNezza, Shi Liu, and Pathiraja A. Jayathilaka, Odille C. Noriega, Thomas H. Myers from Texas State.

 

MESA

March, 2014

On Saturday March 1st, one of our group members Calli Campbell helped coordinate and run the QESST Solar Car Challenge as part of MESA (Mathematics, Engineering and Science Achievement) Tuscon Regionals down at the University of Arizona. This followed MESA Phoenix Regionals at ASU on February 22nd. This challenge brings together middle and high school students from all over Southern Arizona with an interest in solar energy and engineering. This challenge will culminate in a state competition at ASU in April.

 

night of the open door

March, 2014

In ASU's annual event, Night of the Open Door, that was held on March 1st on Tempe campus, the MBE Optoelectronics Group showed the public our research facilities and areas of study. Several of the MBE group members contributed to this public engagement event in various ways. Dozens of visitors of all ages joined a lab tour led by our group member Xiaomeng Shen. Jacob Becker and Yuan Zhao prepared a number of experimental demonstrations involving the use of monochromator, LED, and solar cell; Jacob Becker and Alex Kirk explained the experimental details to the audience. Shi Liu and Preston Webster showed the MBE machine to the visitors, who were impressed with the machine and left positive comments. It has been a meaningful evening for the MBE group to communicate our work with the public.

 

NAMBE2013

October, 2013

Congratulations to Jing Lu (Dave Smith’s student) for receiving the best student oral presentation award from NAMBE link !! The presentation is co-authored by Elizabeth Steenbergen, Xiao-Meng Shen, and Shi Liu from our group on the structure properties of InAs/InAsSb type-II superlattices. This is the third time in a row that our collaborative work with David Smith’s group receives either the best student oral presentation or the best poster award from NAMBE since 2011!! The students in the two groups are doing a fantastic job!

 

YHZ

Sept, 2013

Congratulations to MBE Group member Michael DiNezza for his receiving of the prestigious Ford Graduate Engineering Fellowship from the Fulton Schools of Engineering.

 

Alex Kirk

Aug, 2013

The group extends a warm welcome to new group member Calli Campbell. She received her Bachelors in Materials Science and Engineering this past May from the University of Florida in Gaineville, Florida. Calli is beginning her graduate studies at Arizona State University this fall as a Dean’s Fellow, a Barrett Electronic Materials Fellow, and a Science Foundation of Arizona Fellow.

 

YHZ

June, 2013

Six people from the group attended the PVSC this year and presented three posters and one oral presentation. Weiquan Yang’s oral presentation reported the demonstration of 300 nm GaAs solar cells with an efficiency over 19%. Alex Kirk presented a post-deadline poster on CdTe DH structures grown on InSb, which gives a 50 ns PL decay time, and predicted potential performance of single-crystal CdTe solar cells. This poster attracted several dozen visitors and generated a broad interest well beyond the CdTe solar cell community. Shi Liu and Jake Becker’s poster on conductive AR coatings also attracted the attention of many people, as their project may have near-term impact on multi-junction solar cells as the idea can be quickly incorporated into existing technologies. The final poster presentation was a joint effort between Jingjing Li and Yuan Zhao on the novel geometrical design of solar cells relying on the chevron pattern.

 

Alex Kirk

April, 2013

Congratulations to Alexander Kirk for his receiving of the prestigious Bisgrove Scholars Award from the Science Foundation Arizona. Full story

 

YHZ

March, 2013

Yong-hang Zhang was reported by ASU news, Electrical engineering contributions earn professors Fellow status. He is one of four professors of the School of Electrical, Computer and Energy Engineering at Arizona State University, who have recently been elected to distinguished Fellow status in leading professional engineering organizations.

 

Jin Fan

February, 2013

Our group would like to thank Dr. Stuart Farrell for his many contributions to our group and congratulate him on his advancement in career. We wish him prosperity in his future career with NREL.

 

Jin Fan

February, 2013

Our group would like to thank Dr. Jing-jing Li for her many contributions to our group, who has worked as a PhD student and a postdoc in the group on high efficiency and thin film solar cells in the past five and half years. She will start working as a Device Engineer in the non-volatile memory group in Intel, Santa Clara, CA, in March 2013.

 

Jin Fan

February, 2013

Congratulations to Dr. Jin Fan on joining Soitec Phoenix Labs. Our group would like to thank Dr. Jin Fan for his many contributions to our group and congratulate him on his advancement in career. We wish him prosperity in his future career.

 

Michael DiNezzaQiang Zhang

January, 2013

We would like to welcome new group members, Yuan Zhao and Ying-Shen Kuo. Yuan Zhao got his bachelor's degree and master's degree, both from Beijing University of Posts and Telecommunications. Ying-Shen Kuo earned his bachelor's degree and master's degree, both from National Taiwan University. Yuan Zhao and Ying-Shen Kuo are excited to join us and get involved in the group's researches.

 

YHZ

Dec, 2012

Congratulations to Prof. Yong-Hang Zhang on his election as a fellow of the Optical Society of America (OSA)!

 

Xiaomeng

Oct, 2012

In the 29th North American Conference on Molecular Beam Epitaxy (NAMBE 2012), Xiaomeng Shen won the Outstanding Student Paper awards as poster presentation, the best poster award in the conference, for her poster entitled as "Study of the structural properties of InAs/InAs1-xSbx type-II superlattices using x-ray diffraction and cross-sectional TEM". Congratulations to her!

 

Orkun

Sep, 2012

Our group would like to thank Dr. Oray Orkun Cellek for his many contributions to our group and congratulate him on his advancement in career. We wish him prosperity in his future career!

 

Jin Fan

Aug, 2012

Congratulations to Jin Fan on his successful defense of his Ph.D thesis and graduation from our group! His fantastic dissertation is entitled as "Material Properties of MBE Grown ZnTe, GaSb and Their Heterostructures for Optoelectronic Device Applications".

 

Ha Sul

Aug, 2012

Congratulations to Dr.Ha Sul Kim on recieving a faculty position in South Korea and thank him for his contributions to our group. We wish him prosperity in his future career.

 

Alex and Di

Aug, 2012

The group extends a warm welcome to two new postdocs. Alexander Kirk specializes in solar cells and IR detector theory and recieved his PhD degree from University of Texas at Dallas. Di Cao recieved his degree from Arizona State University, and is experienced in Micro/nano fabrication in the clean room. Thank them for bringing expertise and experience to our group!

 

YHZ

June, 2012

Congratulations to Prof. Yong-Hang Zhang! He is designated "Fulton Entrepreneurial Professor" by the Fulton Schools of Engineering ASU.This program supports the efforts of translating innovations and creating positive impact on the economy, for the faculty who relate to technology and product commercialization and the formation of new companies.

 

PVSC

June, 2012

The group presented four papers at PVSC. Jing-Jing Li’s paper is selected as a finalist for the Student Award and Weiquan Yang’s poster received the nomination for the Best Poster Award. Jing-Jing’s work has been cited by the conference as one of the highlights. Shi Liu’s poster has also attracted a lot of attentions.

 

Jake

June, 2012

Congratulations to Jake Becker for his receiving of the prestigious Barrett Electronic Materials Fellowship endowed by Craig and Barbara Barrett. This fellowship supports a new doctoral student in electrical or materials engineering doing research on electronic materials in the Fulton Schools of Engineering.

 

Shi

June, 2012

Congratulations to Shi Liu for his receiving of the prestigious Ford Graduate Engineering Fellowship from the Fulton Schools of Engineering.

 

Fisher

May, 2012

The group would like to congratulate to the group alumni, Prof. Sui-Qing (Fisher) Yu, on his receiving of the prestigious NSF Career award! >>link<< He is now a faculty member in the University of Arkansas, and the first one in his current department who has received such an award. This is a great achievement considering that he just started his academic career a few years ago.

 

Jing-Jing

May, 2012

Congratulations to Jing-Jing Li on her successful defense of her Ph.D thesis and graduation from our group! Her fantastic dissertation is entitled as "Novel materials, Grid design rule, and Characterization methods for Multi-junction Solar cells ".

 

CAZ-AWIS

May, 2012

In the 2012 Hands-on Science Day organized by the Central Arizona Chapter of the Association for Women in Science (CAZ-AWIS), Jingjing volunteered to give a solar cell demo to several girls aging 5 through 12. These girls were excited about interviewing scientists and learning about a wide variety of disciplines. Most importantly, they were able to see how women in science are strong in number, and not limited to any specific discipline.

 

Hank

Apr, 2012

Congratulations to Hank for the completion of his master's studies! His successful defense was entitled as "Conversion of a Molecular Beam Epitaxy System for the Growth of 6.1 Angstrom Semiconductors".

 

Elizabeth

Apr, 2012

Our work in T2SL improved infrared photodetector has been reported by "Photonic Spectra", titled as "Nanomaterial combinations enhance IR photodetection". >>link<<

 

KHild

Mar, 2012

Our group would like to welcome the visiting scholar Konstanze Hild. She is here on a six week leave from the Photonics group at the University of Surrey, UK >>link<< to exploit the MBE group’s solar cell activities. Back home she uses optical and device characterisation to learn more about bismuth containing semiconductors for optoelectronic applications on a project already collaborating with people at ASU.

 

Elizabeth

Mar, 2012

Elizabeth had a successful defense of her Ph.D thesis "Strain-balanced InAs-InAsSb type-II Superlattices on GaSb Substrates for Infrared Photodetector Applications". This is a splendid end to her fruitful Ph.D study.Congratulations Elizabeth!

 

Elizabeth

Feb, 2012

Congratulations to Elizabeth on her winning of the Palais’ Outstanding Doctoral Student Award! Our school has given only one such an award every year since 2002, except 2005-06 when both Jiangbo Wang and Shui-Qing (Fisher) Yu from our group received it. >>link<<

 

IR image

Feb, 2012

Our work in InAs/InAsSb Type 2 superlattice IR detectors has been reported by ASU News as the science & tech spotlight. >>link<<

 

IEEE

Feb, 2012

Congratulations to Jing-Jing Li! She has been selected by IEEE Phoenix Section Committee to receive the "IEEE Phoenix Section Student Scholarship- Irv Kaufman Award" for her academic achievements.

 

Jake

Jan, 2012

Our group would like to welcome new student Jake Becker. Jake earned his Bachelor's degree in Electrical Engineering at Arizona State University and will be pursuing a PhD degree with the Dean's Fellowship awarded. He joins us with a strong background in analog circuit design and is excited to extend his research to compound semiconductor and optoelectronic devices.

 

SPIT

Jan, 2012

Four group members (Orkun Cellek, Jingjing Li, Shi Li, and Elizabeth Steenbergen) gave four oral presentations at SPIE photonic West in San Francisco January. They and Prof. Zhang had a lunch with many group alumni in the Bay Area and met a few more at the conference. We are very pleased to hear that they all are doing extremely well.

 

Retreat

Jan, 2012

We had a great annual retreat in Sedona from Jan 14th to 15th including a review about the MURI project and hiking as a group in the beautiful surroundings. Over 30 people attended the retreat including alumni and people from collaborating groups.

 

Compound Semiconductor

Jan, 2012

Our work in Gallium free T2SL IR detector was recently featured in Compound Semiconductor. >>link<< This work is a breakthrough in IR technology because it has increased the minority carrier lifetime in Ⅲ-ⅤT2SL materials significantly using the InAs/InAsSb system, which costs much less than traditional HgCdTe infrared imagers.

 

Dr. Ding Ding

Jan, 2012

Congratulations to Dr. Ding Ding! He has been appointed as an adjunct assistant professor in our school. He will collaborate with our group on optoelectronic materials and device research and give lectures similar topics in selected graduate courses.

 

Journal of Applied Physics

Dec, 2011

We have spent three year on and off effort to develop a semi-analytical model for semiconductor solar cells.  The model is a large step forward beyond the well known detailed-balance model and incorporates the key performance aspects of practical devices, including nonradiative recombination, photon recycling within a given junction, spontaneous emission coupling between junctions, and non-step-like absorptance and emittance with below-bandgap tail absorption. Using a straightforward formulism this model provides initial design parameters and achievable efficiencies for both single- and multiple-junction solar cells over a wide range of material quality.  For more details, please see J. Appl. Phys. 110, 123104 (2011).

 

APL

Dec, 2011

We have demonstrated a significant breakthrough in type-II superlattice IR detector materials.  Time-resolved photoluminescence measurements revealed a 412 ns carrier lifetime for a long-wavelength infrared InAs/InAsSb type-II superlattice (T2SL) that is 13 times longer than that reported for InAs/GaInSb T2SLs and close to that (1 us) for HgCdTe. The breakthrough is attributed to a reduction of non-radiative recombination and expected to enable better T2SL IR photodetectors.  For more details, please see Appl. Phys. Lett. 99, 251110 (2011).

 

Ben

Nov, 2011

Congratulations to Benjamin Green on his successful defense of his Ph.D thesis and graduation from our group! He has done fantastic work on some interesting ideas for dual wavelength semiconductor lasers and has set a great example to the other students in our group.

 

celebrating

Oct, 2011

Our group would like to thank Dr. Ding Ding for his many contributions to our group and congratulate him on his advancement in career. We wish him prosperity in his future career. Also, we extend a warm welcome to new postdoc Ha Sul Kim from a postdoc position in UC Berkeley and thank him for bringing expertise and experience to our group.

 

li and zhang

Oct, 2011

We'd like to welcome warmly new postdoc Hua Li. He specializes in GSMBE Growth and characterization for projects including subwavelength laser, solar cell and nanowires, and he comes to us from a postdoc position in UC San Diego. At the same time, we'd like to thank Dr. Qiang Zhang for his dedication and excellent work in the MBE group and congratulate him on his career advancement!

 

celebrating

Sep, 2011

The group had a great Friday evening in Memorial Union on ASU campus celebrating the career advancements for people who either have left or will leave the group, and warmly welcoming new posdocs and students to our group.

 

new

Aug, 2011

With the start of the Fall 2011 semester, the group welcomes postdoc Weiquan Yang and new students Zhaoyu He, Xinhao Zhao, and Zhiyuan Lin. Weiquan comes to us from a postdoc position in University of Texas Arlington and brings fabrication expertise to the group. Zhaoyu, Xinhao, coming from Tsinghua University, and Zhiyuan, coming from Peking University, are excited to get involved in the groups research.

 

Elizabeth at NAMBE

Aug, 2011

Congratulations to group member Elizabeth Steenbergen for receiving the Outstanding Student Paper Award at the 2011 North American MBE conference held at UCLA - San Diego. Her paper was entitled "InAs/InxAs1-xSb type-II superlattices for long-wavelength infrared applications."

 

Stuart Farrell

July, 2011

The group extends a warm welcome to new postdoc Stuart Farrell. Stuart joins our us having recently received his Ph.D. from George Mason University near Washington, DC. He brings expertise in infrared photodetectors and MBE growth gained from his extensive work with the HgCdTe material system.

 

Senior Design Team

July, 2011

The undergraduate senior design team advised by Dr. Zhang was featured in asu news. The team developed an unmanned aerial vehicle that utilizes solar energy to extend range and reduce reliance on batteries. The students have continued refining the plane and will pass their work on to senior design students in the upcoming year. >>Article<<

 

Jingjing's Award

June, 2011

Congratulations to Jingjing Li and Swee Hoe Lim and their co-authors for accolades received at the 2011 IEEE Photovoltaic Specialists Conference. Jingjing received the Best Poster Award for her paper entitled "Combined effects of shunt and luminescence coupling on external quantum efficiency measurements of multi-junction solar cells." Swee's paper entitled "Cascaded tunnel diode incorporating InAs/GaSb broken gap interface for multi-junction solar cells" received nomination for the best poster award. >>Picture<<

 

Sol Invictus

June, 2011
Undergraduate research team Sol Invictus was recently featured in a video on the ASU Research Office of Knowledge Enterprise Development web site. Click the following link to see interviews with team members and Dr. Zhang as well as video of the unmanned aerial vehicle in action. >>Video<<
 

Fisher

May, 2011

The group would like to congratulate alumnus Shui-Qing (Fisher) Yu for receiving the EE Outstanding Researcher Award from the University of Arkansas College of Engineering. This award is given to only one faculty member within the department each year. Fisher's research is in the fields of semiconductor optoelectronics, advanced materials integration, applied nano- and bio- photonics, and nanopackaging. Applied Nano & Bio Photonics Group.

 

Sol Invictus

May, 2011

The group congratulates team Sol Invictus for winning the senior design prize contest. Under the guidance of Prof. Yong-Hang Zhang and Dr. Charles Allen, seniors Cameron Simoes, Cory Peterson, Mark Garrison, and Michael Yach designed and constructed a solar powered unmanned aerial vehicle. The team is grateful for the generous support of Spectrolab, a world leading manufacturer of high-efficiency solar cells.

 

Xiaomeng Shen

April, 2011

Our group would like to welcome Xiaomeng Shen. She got her bachelor's degree from Shanghai Jiao Tong University in China. She majored in material science and engineering (2006-2010).

 

Kiwanis International

March, 2011

Group members Elizabeth Steenbergen, Orkun Cellek and Nate Riordan spent the evening judging the Kiwanis Club Science Fair. Held in Cave Creek, the fair included entries ranging from Kindergarten to High School. We thank them for their time supporting youth interest in science.

 

Michael DiNezzaElizabeth Steenbergen

February, 2011

Group members Michael DiNezza and Elizabeth Steenbergen have been awarded scholarships from the Achievement Rewards for College Scientists (ARCS) Foundation. The ARCS foundation was established in 1958 with the goal of investing in the future of America by providing scholarship support to academically talented students majoring in the fields of Natural Science, Medicine, and Engineering. The Phoenix Chapter of the ARCS Foundation has awarded over 600 scholarships since 1975 to outstanding graduate students at Arizona's three major universities.

 

Michael DiNezza

February, 2011

The MBE Optoelectronics Group congratulates group members Dr. Robin Scott, Dr. Swee Hoe Lim, and Michael DiNezza for reaching academic milestones. Robin successfully defended her PhD thesis entitled "Pulsed Laser Deposition of Highly Conductive Transparent Ga-doped ZnO for Optoelectronic Device Applications" and will be joining Soitec. Swee accepted a position in nanosolar. We greatly appreciate the many contributions he made in his time with the group. Michael completed the doctoral qualifying exam with a paper and presentation entitled "ZnTe-based LEDs" Doping Fundamentals and Challenges." He will continue to investigate doping issues in ZnTe with aim to produce LEDs with this material system.

 

Michael DiNezza

January, 2011

On January 14, 2011, the MBE group held its Fall 2010 semester end retreat in Flagstaff, Arizona at the Radisson Woodlands Hotel Conference Room. This included a conference style review and cross country skiing on the leisure end. This is a special year for the group, as we have a larger number of talented individuals and postdoctoral researchers than ever before.

 

Michael DiNezzaQiang Zhang

January, 2011

We welcome two new postdocs. Orkun Cellek specializes in IR photodetectors and received his doctoral degree from Middle East Technical University in Turkey. Qiang Zhang received his degree from City University of New York and recently was worked with an MBE group at Princeton University. We are proud to accept these two amazing individuals to our group.

 

Michael DiNezza

November, 2010

MBE Group member Michael DiNezza's vision for the future landed him a feature spot on the home page of ASU's graduate college. The tag line "Michael DiNezza searches for more energy-efficient lighting" accompanies an article mentioning his fellowship awards and goals for PhD study. We are honored to have such a visionary and goal-oriented member of our team. Congratulations Michael!

 

Photon Magazine

November, 2010

The MBE Optoelectronics Group and Center for Nanophotonics were featured recently in Photon Magazine for our work toward the future of photovoltaics, including multijunction solar cells and concentrator devices. Jingjing Li and Swee Hoe Lim were photographed hard at work in our advanced laboratories.

 

GPSA

November, 2010

Congratulations to Elizabeth Steenbergen! She earned a research grant for $2000 from the 2010-11 Graduate Research Support Program administered by the GPSA and the Graduate College. The award is sponsored by ASU’s Office of the Vice President for Research and Economic Affairs (OVPREA).

 

The State Press

October, 2010

Dr. Yong-Hang Zhang and Dr.Shane Johnson were featured in an article on the Center for Photonics Innovation in "the State Press," an independent, student run newspaper of Arizona State University. >>Article<<

 

NRC

September, 2010

The School of Electrical, Computer and Energy Engineering is ranked in the top twenty in a release by the National Research Council. The MBE Optoelectronics group is proud to be a part of such a highly reputed program. >>Press Release<<

 

CPhI

September, 2010

The MBE Optoelectronics group will be part of the newly announced Center for Photonics Innovation. The center, which has named group leader Dr. Yong-Hang Zhang as director, will be a multidisciplinary effort in advancing photonics research and education. >>Press Release<<

 

August, 2010

We would like to welcome new group members Shi Liu and Donna Vigneri. Shi recently received his degree in physics from Peking University. Donna hales from the Florida Institute of Technology with a degree in Electrical Engineering.

 

Dr. Songnan Wu

August, 2010

Congratulations to Dr. Songnan Wu for the completion of his doctoral studies. His successful defense was entitled "A Study of Two High Efficiency Energy Conversion Processes: Semiconductor Photovoltaics & Semiconductor Luminescence Refrigeration."

 

ARO MURI

August, 2010

As part of a multi-university team consisting of UIUC (lead), ASU, Georgia Tech, and NCST, our group has been selected for a MURI program.  This project will involve studying the physical and structural properties of antimonide based semiconductor type-II superlattices for IR lasers and photodetectors. >>link<<

 

June, 2010

The MBE Optoelectronics Group had a strong presence at the 35th Annual IEEE Photovoltaic Specialists Conference. Dr. Swee Hoe Lim had an oral presentation, Dr. Ding Ding and Jingjing Li presented posters, and Dr. Yong-Hang Zhang and Dr. Shane Johnson also attended.

 

June, 2010

The MBE Optoelectronics Group extends our welcome to Postdoctoral Research Associate Charles Allen. He recently received his Ph. D. from the School of Electrical and Computer Engineering at Purdue University and has research interests in the areas of compound semiconductor devices, solar cells, and renewable energy.

 

May, 2010

Our group would like to welcome Assistant Research Scientist Vijay D'Costa from within Arizona State University. Vijay will share his expertise in optical characterization of semiconductor materials and devices. >>link<<

 
 

Apr,2010

The ASU MBE Optoelectronics group will join other ASU solar energy researchers in a partnership with the University of Tokyo, Japan to advance solar energy technology. Under the three year agreement, the universities will collaborate on research and education as well as conduct joint lectures and symposia. For further information please see the full press release at the following >>link<<.

 

Mar,2010

Congratulations to Robin Scott who was awarded the ASU Dissertation Fellowship as she nears the completion of her PhD.

 

Mar,2010

Congratulations to group member Songnan Wu for being awarded the Photonics Society of Chinese-Americans Bor-Uei Chen Memorial Scholarship Award. He was one of only a few graduating PhD students to be selected for this award by his peers.

 

Feb,2010

Congratulations to group members Michael DiNezza, Songnan Wu, and Dr. Ding Ding for receiving awards at the 2010 IEEE Phoenix Section Banquet. Michael was recognized for outstanding contributions to the IEEE Phoenix Section GOLD Affinity Group as the secretary for the Phoenix GOLD chapter; Songnan earned IEEE Phoenix Section Irv Kaufman Gross Student Scholarship Award; and Ding received an non-member award for his contributions to the modeling and simulation of multijunction photovoltaic solar cell design and performance. >>More photos<<.