Multi-junction photovoltaic cell having buffer layers for...

Batteries: thermoelectric and photoelectric – Photoelectric – Panel or array

Reexamination Certificate

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C136S255000, C136S252000, C136S262000, C257S461000, C257S431000, C257S464000, C244S172700

Reexamination Certificate

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07122733

ABSTRACT:
The present invention provides a solar cell comprising a substrate, a first buffer layer disposed above the base layer, a second buffer layer disposed above the first buffer layer, a first boron compound layer disposed above the second buffer layer, a second boron compound layer disposed above the first compound layer, and a window layer disposed above the second compound layer, wherein the first compound layer comprises a first type of doping, wherein the second compound layer comprises a second type of doping, wherein the second buffer layer comprises a higher energy bandgap than the first compound layer, and wherein the first buffer layer and the second buffer layer permit a boron content in the first compound layer and the second compound layer to be greater than 3 %.

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