Photodetector and Spectrometer Using the Same

2:

• The photodetector according to claim 1, wherein
• the substrate has a first conductive type substrate and a second conductive type epitaxial layer, formed on the first conductive type substrate, and has channel regions, functioning as the photodetecting elements, formed in the epitaxial layer, and
• the carrier capturing portion is arranged from a layer portion of the second conductive type epitaxial layer that is located between the photodetecting element array and the light entrance portion.

3:

• The photodetector according to claim 1, wherein
• the substrate has a first conductive type substrate and a second conductive type well region, formed in the first conductive type substrate, and has channel regions, functioning as the photodetecting elements, formed in the well region, and
• the carrier capturing portion is arranged from a region portion of the second conductive type well region that is located between the photodetecting element array and the light entrance portion.

4:

• The photodetector according to claim 1, wherein
• the substrate has a first conductive type substrate, has channel regions, functioning as the photodetecting elements, formed in the first conductive type substrate, and has a dummy channel region in a substrate portion of the first conductive type substrate that is located between the photodetecting element array and the light entrance portion, and
• the carrier capturing portion is arranged from the dummy channel region.

5:

• The photodetector according to claim 1, wherein
• an electrode for removing the captured carriers to the exterior is connected to the carrier capturing portion.