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Ultra-high efficiency multijunction solar cell using lattice-matched II/VI and III/V materials |
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The bandgap energies are plotted as a function of the lattice constants of major III-V and II-VI materials. The histogram shows the normalized AM 1.5G solar radiation power density as a function of energy. (high resolution image) |
Electroluminescence refrigeration devices |
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3D topview of the device. |
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3D backside-view of the device. |
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ICP etched micro-dome. |
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Topview of a processed device. |
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SEM image of a processed device. |
Study of the Internal quantum efficiency with photon recycling |
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Measured internal quantum efficiency of InGaAs quantum wells vesus injuction level at various temperatures. |