Basic Research Needs for Solar Energy Utilization

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Energy (eV)

Flux (mA/eV.cm

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AM1.5G solar flux vs energy

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Energy (eV)

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AM1.5G solar flux vs energy

Figure 67 (a) Solar spectrum at AM1.5, where the range of human vision
runs from 3.1 eV (violet) to 1.9 eV (red); (b) maximum conversion efficiency
of a single junction cell vs. band gap

a

b