Photoelectric conversion element
AssigneeCanon Kabushiki Kaisha
InventorsYouichi Fukaya, Takayuki Sumida, Akira Shimazu
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Abstract
The present disclosure is a photoelectric conversion element including: a photoelectric conversion layer 5 including a first quantum dot 4a and a second quantum dot 4b, a ratio X of the number of heavy metal atoms to the number of oxygen group atoms is less than 2 on a surface of the nanoparticle of the first quantum dot 4a, the ratio X is greater than or equal to 2 on a surface of the nanoparticle of the second quantum dot 4b, and Equation (1) is satisfied: 0.3<N (1), where N denotes a ratio of the number of second quantum dots to the number of first quantum dots.
Claims11
A photoelectric conversion element comprising:
- a photoelectric conversion layer including a first quantum dot and a second quantum dot,
- wherein the first quantum dot and the second quantum dot each have a nanoparticle including a heavy metal atom and an oxygen group atom,
- wherein a ratio X of the number of heavy metal atoms to the number of oxygen group atoms is less than 2 on a surface of the nanoparticle of the first quantum dot,
- wherein the ratio X is greater than or equal to 2 on a surface of the nanoparticle of the second quantum dot, and
- wherein Equation (1) is satisfied:
- 0.3<N (1),
- where N denotes a ratio of the number of second quantum dots to the number of first quantum dots.
A photoelectric conversion element comprising:
- a photoelectric conversion layer including a first quantum dot and a second quantum dot,
- wherein the first quantum dot and the second quantum dot each have a nanoparticle including a heavy metal atom and an oxygen group atom,
- wherein a ratio X of the number of heavy metal atoms to the number of oxygen group atoms is less than 2 on a surface of the nanoparticle of the first quantum dot,
- wherein the ratio X is greater than or equal to 2 on a surface of the nanoparticle of the second quantum dot, and
- wherein Equation (2) is satisfied:
- (2dL/3dS)2N (2),
- where dL denotes an average particle diameter of nanoparticles of the first quantum dots, dS denotes an average particle diameter of nanoparticles of the second quantum dots, and N denotes a ratio of the number of second quantum dots to the number of first quantum dots.
Dependencies are inferred from the claim text.