US 12,142,443 B2
Solar cell
Shohei Kusumoto, Osaka (JP); Kenji Kawano, Osaka (JP); and Tomoyasu Yokoyama, Osaka (JP)
Assigned to PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD., Osaka (JP)
Filed by Panasonic Intellectual Property Management Co., Ltd., Osaka (JP)
Filed on Apr. 22, 2022, as Appl. No. 17/660,214.
Application 17/660,214 is a continuation of application No. PCT/JP2020/026110, filed on Jul. 3, 2020.
Claims priority of application No. 2019-208000 (JP), filed on Nov. 18, 2019.
Prior Publication US 2022/0246362 A1, Aug. 4, 2022
Int. Cl. H01G 9/20 (2006.01); H10K 30/30 (2023.01); H10K 30/40 (2023.01); H10K 30/82 (2023.01); H10K 85/30 (2023.01); H10K 85/60 (2023.01)
CPC H01G 9/2009 (2013.01) [H10K 30/30 (2023.02); H10K 30/40 (2023.02); H10K 30/82 (2023.02); H10K 85/30 (2023.02); H10K 85/624 (2023.02); H10K 85/626 (2023.02); H10K 85/633 (2023.02)] 4 Claims
OG exemplary drawing
 
1. A solar cell comprising:
a first electrode;
a second electrode;
a porous titanium oxide layer;
a photoelectric conversion layer disposed on the porous titanium oxide layer, the porous titanium oxide layer and the photoelectric conversion layer being interposed between the first electrode and the second electrode; and
a hole transport layer interposed between the first electrode and the photoelectric conversion layer,
wherein at least one electrode selected from the first electrode and the second electrode is transparent to light,
wherein the photoelectric conversion layer includes a perovskite compound constituted by a monovalent cation, a divalent cation, and a halogen anion,
wherein the monovalent cation includes at least one selected from the group consisting of a formamidinium cation and a methylammonium cation,
wherein the divalent cation includes a Sn cation,
wherein the halogen anion includes an iodide ion,
wherein the hole transport layer includes 4,4′,4″-tris[9,9-dimethyl-2-fluorenyl(4-methoxy-phenyl)amino]triphenylamine,
wherein the perovskite compound is at least one selected from the group consisting of
a perovskite compound represented by FASnI3 and
a perovskite compound represented by GA0.17FA0.83SnI3,
wherein the hole transport layer further includes lithium bis(trifluoromethanesulfonyl)imide.