Photodetector and detection device
AssigneeKabushiki Kaisha Toshiba
InventorsMitsuyoshi Kobayashi, Rei Hasegawa
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Abstract
According to an embodiment, a photodetector includes a first photoelectric conversion element, a second photoelectric conversion element, and an absorption layer. The first photoelectric conversion element includes a first photoelectric conversion layer for converting energy of radiation into electric charges. The second photoelectric conversion element includes a second photoelectric conversion layer for converting energy of radiation into electric charges. The absorption layer is arranged between the first photoelectric conversion element and the second photoelectric conversion element to absorb radiation having energy equal to or lower than a threshold value.
Claims9
A photodetector comprising:
- a first photoelectric conversion element including a first photoelectric conversion layer for converting energy of radiation into electric charges;
- a second photoelectric conversion element including a second photoelectric conversion layer for converting energy of radiation into electric charges;
- and
- an absorption layer arranged between the first photoelectric conversion element and the second photoelectric conversion element to absorb radiation having energy equal to or lower than a threshold value, wherein
- the threshold value is a value larger than a maximum value of energy of radiation that is photoelectrically convertible by the first photoelectric conversion element arranged on an up side of the absorption layer in an incident direction of the radiation and smaller than a maximum value of energy of radiation that is photoelectrically convertible by the second photoelectric conversion element arranged on a down side of the absorption layer in the incident direction of the radiation.
Dependencies are inferred from the claim text.