Westerman, Hattori, Daniels & Adrian, LLP
Photodetector and imaging device
A photodetector includes: a photoelectric conversion layer including a first principal surface from which light enters and a second principal surface on the opposite side from the first principal surface and configured to perform photoelectric conversion on the light; a first diffraction grating formed on a side of the second principal surface and including a configuration where first surfaces which extend in a stripe state in a first direction and second surfaces which extend in a stripe state in the first direction and have a height difference with respect to the first surfaces are alternately arranged; metal wires provided at intervals over the first surfaces and the second surfaces and which extend in the first direction or a second direction perpendicular to the first direction; and a second diffraction grating formed over the first diffraction grating and including grooves which are formed at intervals and extend in the second direction.
FUJITSU LIMITED
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Hiroyasu
Yamashita