Radiant energy – Photocells; circuits and apparatus – Photocell controlled circuit
Reexamination Certificate
2005-06-21
2005-06-21
Luu, Thanh X. (Department: 2878)
Radiant energy
Photocells; circuits and apparatus
Photocell controlled circuit
C257S461000, C257S184000, C257S431000
Reexamination Certificate
active
06909083
ABSTRACT:
A filter layer and a buffer layer are sequentially laminated on a first principal face of a semiconductor substrate, and an island-shaped light absorption layer and a window layer are laminated on top of the buffer layer. A diffusion region in which p-type impurities have been diffused is formed in the window layer. An n-side electrode and a p-side electrode are formed on the buffer layer and the diffusion region, respectively. A light incidence portion is formed on the buffer layer where the light absorption layer has not been formed.
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Luu Thanh X.
Matsushita Electric - Industrial Co., Ltd.
Nixon & Peabody LLP
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