SOLAR CELL AND MANUFACTURE THEREOF

摘要

PURPOSE:To enable solar energy to be converted more efficiently and obtain a solar cell at a lower cost by allowing a mutually contacting semiconductor layer between a solar cell for a low-energy light and that for a high-energy light to be of a same conductive type and by forming an intermediate electrode at one of those semiconductor layers. CONSTITUTION:A pn junction is formed by depositing an n-type part 3 and a p-type part 4 of a CuInSe2 thin film in order from the lower, part on a lower- part electrode 2 where Mo is formed on a glass substrate 1 for producing a cell Sl for a low-energy light and then a p-type CdTe thin film 6 and an n-type ZnCdS thin film 7 are deposited in sequence for forming a hetero junction and for producing a cell S2 for a high-energy light. Au and ITO are formed as an intermediate electrode 5 and the transparent upper electrode 2.