Photoelectric conversion element
AssigneeCitizen Watch Co., Ltd.
InventorsAkira Nakagawa, Yoshiharu Takane
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Abstract
Provided is an inverted photoelectric conversion element having high conversion efficiency. A photoelectric conversion element according to the present disclosure includes, in sequence, a first conductive layer having light transparency, a hole transport layer, a light-absorbing layer expressed by a composition formula AgaBibIc, an electron transport layer, and a second conductive layer. In the composition formula, the composition ratio a, b, and c satisfies c=a+3b and 2≤b/a≤4, and light incident through the first conductive layer is photoelectrically converted.
Claims4
A photoelectric conversion element comprising, in sequence:
- a first conductive layer having light transparency;
- a hole transport layer;
- a light-absorbing layer;
- an electron transport layer;
- and
- a second conductive layer, wherein light incident through the first conductive layer is photoelectrically converted, the hole transport layer includes Zn-doped nickel oxide, in the hole transport layer, the percentage of Ni is from 30 at % to 40 at % inclusive, the percentage of O is from 55 at % to 60 at % inclusive, and the percentage of Zn is from 3 at % to 15 at % inclusive, and
- the photoelectric conversion element further comprises an interdiffusion inhibiting layer that is disposed between the hole transport layer and the light-absorbing layer and that inhibits interdiffusion of chemical elements contained in the hole transport layer and the light-absorbing layer.
Dependencies are inferred from the claim text.