Mixed ternary heterojunction solar cell

Details Mixed ternary heterojunction solar cell Mixed ternary heterojunction solar cell

1991-01-17

1992-08-25

Weisstuch, Aaron

Batteries: thermoelectric and photoelectric

Photoelectric

Cells

136260, 136264, 136265, 357 16, 357 30, 437 4, 437 5, 148 332, 148 334, 148 335, H01L 31072, H01L 3118, H01L 310328

Patent

active

051415640

ABSTRACT:
A thin film heterojunction solar cell and a method of making it has a p-type layer of mixed ternary I-III-VI.sub.2 semiconductor material in contact with an n-type layer of mixed binary II-VI semiconductor material. The p-type semiconductor material includes a low resistivity copper-rich region adjacent the back metal contact of the cell and a composition gradient providing a minority carrier mirror that improves the photovoltaic performance of the cell. The p-type semiconductor material preferably is CuInGaSe.sub.2 or CuIn(SSe).sub.2.

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