A researcher in semiconductor devices whose joint work with H. J. Hovel demonstrated heterojunction solar cells made from gallium arsenide and an aluminum-containing alloy. The additional layer admits useful light while reducing surface recombination and electrical resistance. Their 1972 experiment illustrates why an efficient solar cell depends on controlling what happens to generated carriers at a surface, as well as on absorbing incident light.[ref]
High-efficiency Ga1-xAlxAs-GaAs solar cells by Jerry M. Woodall and H. J. Hovel. Abstract and introduction: heterojunction structure, surface-recombination losses and series resistance
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