Color light receiving device and image pickup device

摘要

The invention provides a light receiving device having a single semiconductor substrate and a short-wavelength light receiving section. The single semiconductor substrate has regions of a first conductivity type and regions of a second (opposite) conductivity type alternately multiply laminated. Each of junction surfaces between the regions of the first conductivity type and the regions of the second conductivity type is formed to have a depth which enables converting light in a wavelength band, which is different from light in other wavelength bands converted by other junction surfaces, to electricity. The short-wavelength light receiving section is provided on or above the incident light surface of the semiconductor substrate and detects light having a wavelength shorter than the central wavelengths of all the respective wavelength bands converted by the junction surfaces. The invention further provides an image pickup device which uses an array of a plurality of the light receiving device.