US 11,723,258 B2
Photoelectric conversion material dispersion liquid and producing method thereof, producing method and producing apparatus of photoelectric conversion film, and photoelectric conversion device
Haruhi Oooka, Kawasaki (JP); Hideyuki Nakao, Setagaya (JP); and Mitsunaga Saito, Inzai (JP)
Assigned to Kabushiki Kaisha Toshiba, Minato-ku (JP)
Filed by Kabushiki Kaisha Toshiba, Minato-ku (JP)
Filed on Mar. 10, 2020, as Appl. No. 16/814,049.
Application 16/814,049 is a division of application No. 15/251,588, filed on Aug. 30, 2016, abandoned.
Claims priority of application No. 2015-182450 (JP), filed on Sep. 16, 2015.
Prior Publication US 2020/0212302 A1, Jul. 2, 2020
Int. Cl. H10K 71/15 (2023.01); H01L 31/0256 (2006.01); H01L 31/18 (2006.01); H10K 30/20 (2023.01); H10K 85/30 (2023.01); H10K 85/20 (2023.01); H10K 85/10 (2023.01); H10K 102/10 (2023.01)
CPC H10K 71/15 (2023.02) [H01L 31/0256 (2013.01); H01L 31/18 (2013.01); H01L 31/186 (2013.01); H10K 30/211 (2023.02); H10K 85/1135 (2023.02); H10K 85/215 (2023.02); H10K 85/30 (2023.02); H10K 2102/103 (2023.02); Y02E 10/549 (2013.01); Y02P 70/50 (2015.11)] 13 Claims
OG exemplary drawing
 
1. A producing method of a photoelectric conversion film, comprising:
forming a photoelectric conversion film containing perovskite crystal particles on a film forming object by causing a photoelectric conversion material dispersion liquid to adhere on the film forming object and pressurizing the photoelectric conversion film to perform a packing process in a film thickness direction and obtain the photoelectric conversion film having a thickness of 10 nm or more and 1000 nm or less,
wherein the photoelectric conversion material dispersion liquid contains: perovskite materials which exist as crystal particles, and have a composition represented by a composition formula: ABX3, wherein A is a monovalent cation of an amine compound, B is a divalent cation of a metal element, and X is a monovalent anion of a halogen element, and have an average particle diameter of 10 nm or more and 300 nm or less; and a dispersion medium which is composed of a poor solvent to the perovskite materials, and in which the crystal particles of the perovskite materials are dispersed in the poor solvent and are not dissolved in the poor solvent.