	US 12,389,737 B2
	Photoelectric conversion element
Tomona Yamaguchi, Tokyo (JP)
Assigned to Canon Kabushiki Kaisha, Tokyo (JP)
Filed by CANON KABUSHIKI KAISHA, Tokyo (JP)
Filed on Jan. 12, 2022, as Appl. No. 17/574,165.
Claims priority of application No. 2021-005752 (JP), filed on Jan. 18, 2021; and application No. 2021-205143 (JP), filed on Dec. 17, 2021.
Prior Publication US 2022/0238824 A1, Jul. 28, 2022
Int. Cl. H10K 39/32 (2023.01); H10K 30/10 (2023.01); H10K 30/35 (2023.01); H10K 85/00 (2023.01); H10K 85/10 (2023.01); H10K 85/60 (2023.01); H10K 102/10 (2023.01)

CPC H10K 39/32 (2023.02) [H10K 30/10 (2023.02); H10K 30/35 (2023.02); H10K 85/00 (2023.02); H10K 85/113 (2023.02); H10K 85/151 (2023.02); H10K 85/615 (2023.02); H10K 85/626 (2023.02); H10K 85/631 (2023.02); H10K 85/633 (2023.02); H10K 85/6572 (2023.02); H10K 2102/101 (2023.02)]

20 Claims

1. A photoelectric conversion element comprising:

a first electrode;

a photoelectric conversion layer; and

a second electrode, in this order,

wherein the photoelectric conversion layer contains a quantum dot and an organic compound and

satisfies formulae (1), (2), and (3),

E2>E1 formula (1)

E1 (eV): energy at a short-wavelength edge in a wavelength region of light detected by the photoelectric conversion element

E2 (eV): band gap of the organic compound

μh_org>μh_QD formula (2)

μh_org(cm²/Vs): hole mobility of the organic compound in the photoelectric conversion layer

μh_QD(cm²/Vs): hole mobility of the quantum dot in the photoelectric conversion layer

Ip_org≤Ip_QD+0.2 formula (3)

Ip_org(eV): ionization potential of the organic compound

Ip_QD(eV): ionization potential of the quantum dot.