| 摘要 |
The present invention relates to a semiconductor photodetector and the like that can be made adequately compact while maintaining mechanical strength. The semiconductor photodetector includes a structural body of layers and a glass substrate. The structural body of layers is arranged from an antireflection film, a high-concentration carrier layer of an n-type (first conductive type), a light absorbing layer of the n-type, and a cap layer of the n-type that are laminated successively. The glass substrate is adhered via a silicon oxide film onto the antireflection film side of the structural body of layers. The glass substrate is optically transparent to incident light.
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