US 12,396,313 B2
Solar cell
Akinobu Hayakawa, Osaka (JP); Takurou Okumura, Ibaraki (JP); and Takeshi Fukuda, Tokyo (JP)
Assigned to SEKISUI CHEMICAL CO., LTD., Osaka (JP)
Appl. No. 17/435,481
Filed by SEKISUI CHEMICAL CO., LTD., Osaka (JP)
PCT Filed Mar. 16, 2020, PCT No. PCT/JP2020/011392
§ 371(c)(1), (2) Date Sep. 1, 2021,
PCT Pub. No. WO2020/189615, PCT Pub. Date Sep. 24, 2020.
Claims priority of application No. 2019-051297 (JP), filed on Mar. 19, 2019.
Prior Publication US 2022/0140269 A1, May 5, 2022
Int. Cl. H10K 30/81 (2023.01); H10K 30/00 (2023.01); H10K 30/82 (2023.01); H10K 30/85 (2023.01); H10K 30/87 (2023.01); H10K 85/50 (2023.01)
CPC H10K 30/81 (2023.02) [H10K 30/451 (2023.02); H10K 30/82 (2023.02); H10K 30/87 (2023.02); H10K 85/50 (2023.02); H10K 30/85 (2023.02)] 1 Claim
OG exemplary drawing
 
1. A solar cell comprising:
a cathode;
a photoelectric conversion layer;
a hole transport layer;
a diffusion prevention layer; and
an anode in the stated order,
the cathode being a transparent electrode,
the anode containing at least one selected from the group consisting of aluminum, copper, antimony, and molybdenum,
the photoelectric conversion layer containing an organic-inorganic perovskite compound represented by the formula AMX wherein A represents an organic base compound and/or an alkali metal, M represents a lead or tin atom, and X represents a halogen atom,
the diffusion prevention layer being:
a diffusion prevention layer that contains tungsten, tantalum, niobium, zirconium, hafnium, or an alloy containing one or more thereof and has a thickness of 5 to 30 nm;
a diffusion prevention layer that contains an oxide containing titanium, gallium, antimony, molybdenum, tungsten, vanadium, chromium, or lead;
a diffusion prevention layer that contains a nitride containing titanium, vanadium, chromium, niobium, tantalum, molybdenum, zirconium, or hafnium and has a thickness of 5 to 50 nm; or
a diffusion prevention layer that contains graphite and has a thickness of 2 nm to 50 nm,
wherein, when the diffusion prevention layer contains the oxide, the anode contains molybdenum or consists of antimony.