US 12,305,101 B2
Composite fine particles, solar cell, member for photoelectric conversion elements, and photoelectric conversion element
Ayumi Nihei, Yokohama (JP); and Tsutomu Miyasaka, Machida (JP)
Assigned to JAPAN SCIENCE AND TECHNOLOGY AGENCY, Kawaguchi (JP)
Appl. No. 18/681,529
Filed by JAPAN SCIENCE AND TECHNOLOGY AGENCY, Kawaguchi (JP)
PCT Filed Aug. 3, 2022, PCT No. PCT/JP2022/029739
§ 371(c)(1), (2) Date Feb. 6, 2024,
PCT Pub. No. WO2023/037797, PCT Pub. Date Mar. 16, 2023.
Claims priority of application No. 2021-147994 (JP), filed on Sep. 10, 2021.
Prior Publication US 2024/0352314 A1, Oct. 24, 2024
Int. Cl. C09K 11/67 (2006.01); C09K 11/02 (2006.01); H10K 30/40 (2023.01)
CPC C09K 11/671 (2013.01) [C09K 11/025 (2013.01); H10K 30/40 (2023.02)] 11 Claims
OG exemplary drawing
 
1. A composite fine particle, comprising:
an inorganic fine particle having a light wavelength conversion ability;
a continuous or discontinuous first coating layer formed on the whole or a part of a surface of the inorganic fine particle;
a second coating layer formed on the first coating layer; and
a third coating layer formed on the second coating layer, wherein
the second coating layer contains a multidentate organic ligand that is an organic compound having light absorption in a near-infrared or infrared range and has at least two or more coordination sites, and
the first coating layer is a metal layer or an inorganic compound layer containing a coordination metal capable of forming a coordination bond with the multidentate organic ligand and a transition metal identical to or different from the coordination metal, and
the third coating layer is a metal layer or an inorganic compound layer containing a coordination metal capable of forming a coordination bond with the multidentate organic ligand.