Mcghee Investor Presentation

Efficiency limits Sources of energy loss Thermalization of excess energy M CB Below band gap photons not absorbed -VB Efficiency (%) 40 (b) 30 50 Black-body limit is GaAs InP 20 20 Cu(In, Ga)(S,Se) 2 CulnSe2 CdTel AM1.5 a-Si:H Ge Cu(In,Ga)(S,Se)₂ 10 CulnS2 CdS Cu₂S AMO CuGaSe₂ 0.5 1.0 2.0 2.5 1.5 Bandgap (eV) Increasing Voc and decreasing Jsc

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