发明名称 |
OPTICAL SEMICONDUCTOR DEVICE |
摘要 |
An optical semiconductor device includes a light-receiving element on a semiconductor substrate of a first conductivity type, the light-receiving element including a light-receiving portion for converting incident light to an electrical current signal and performing a current amplification. The light-receiving portion includes: a semiconductor layer formed on the semiconductor substrate and having an impurity concentration substantially equal to or less than that of the semiconductor substrate; a first semiconductor region of a second conductivity type formed on the semiconductor layer and having an impurity concentration higher than that of the semiconductor layer; and a second semiconductor region of the first conductivity type selectively formed between the semiconductor substrate and the semiconductor layer and having an impurity concentration higher than those of the semiconductor substrate and the semiconductor layer.
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申请公布号 |
US2009261441(A1) |
申请公布日期 |
2009.10.22 |
申请号 |
US20090400346 |
申请日期 |
2009.03.09 |
申请人 |
YASUKAWA HISATADA;TAKEHARA HIRONARI;IWAI TAKAKI |
发明人 |
YASUKAWA HISATADA;TAKEHARA HIRONARI;IWAI TAKAKI |
分类号 |
H01L31/02;H01L31/112 |
主分类号 |
H01L31/02 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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