Aug 032018
A technique discovered by researchers at the University of Exeter in the UK allows to move excited charges through a non-uniform energy-gap landscape. This effect could make solar cells three times more efficient by “funneling” the electrons and holes so they can be extracted from the semiconductor more efficiently.  “Such energy gradient is realized by inducing a non-uniform strain gradient in the semiconductor — that is, by ‘pulling’ the material in a...


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