Direct fabrication of arrays of Cu(In,Ga)Se2 micro solar cells by sputtering for micro-concentrator photovoltaics
Micro-concentrator photovoltaics combines efficiency boosting light concentration with low electrical losses due to thermally cool sub-millimeter sized solar cells.Thin-film Cu(In,Ga)Se2 absorber layers do not suffer from edge recombination enabling miniaturization to the micrometer size, which allows for considerable material saving.Cu(In,Ga)Se2 m