Method and apparatus of multiplejunction solar cell...

Details Method and apparatus of multiplejunction solar cell... Method and apparatus of multiplejunction solar cell...

2005-04-26

2009-06-30

Nguyen, Dao H (Department: 2818)

Semiconductor device manufacturing: process

Making device or circuit responsive to nonelectrical signal

Responsive to electromagnetic radiation

C438S047000, C438S172000, C438S191000, C438S235000, C257S051000, C257S094000, C257S200000, C257SE33032, C257SE33033, C136S206000, C136S249000, C136S254000, C136S255000, C136S262000

Reexamination Certificate

active

07553691

ABSTRACT:
A method and a multijunction solar device having a high band gap heterojunction middle solar cell are disclosed. In one embodiment, a triple-junction solar device includes bottom, middle, and top cells. The bottom cell has a germanium (Ge) substrate and a buffer layer, wherein the buffer layer is disposed over the Ge substrate. The middle cell contains a heterojunction structure, which further includes an emitter layer and a base layer that are disposed over the bottom cell. The top cell contains an emitter layer and a base layer disposed over the middle cell.

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“Supplementary European Search Report,” Application EP 03810750. Dec. 18, 2008. European Patent Office, Berlin, Germany.

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