Sekisui Chemical Co., Ltd.

Tetsuya Kurebayashi

Akinobu Hayakawa

Naohiro Fujinuma

Tomohito Uno

Yuuichirou Fukumoto

Shunji Ohara

Tetsuya Aita

Takeharu Morita

Masako Okamoto

Mayumi Horiki

Motohiko Asano

Junichiro Anzai

Mayumi Yukawa

The present invention aims to provide a solar cell having high durability against deterioration due to moisture ingress from the side surfaces. The solar cellof the present invention includes: first and second electrodesand; a perovskite layerprovided between the first and second electrodesandand containing an organic-inorganic perovskite compound (A) represented by the formula RMXwhere R is an organic molecule, M is a metal atom, and X is a halogen atom; and a side-surface-protecting layerprovided on a peripheral side of the perovskite layerto coat at least part of a side surface of the perovskite layer, the side-surface-protecting layercontaining at least one selected from the group consisting of a metal halide (B1) and an organometal halide (B2) or containing an organohalide (C).

Solar cell and method for producing same

The present invention aims to provide a solar cell that includes a photoelectric conversion layer containing an organic-inorganic perovskite compound and that can exhibit high photoelectric conversion efficiency and high heat resistance. Provided is a solar cell including, in the stated order: a cathode; a photoelectric conversion layer; and an anode, the photoelectric conversion layer containing an organic-inorganic perovskite compound represented by the formula R-M-Xwhere R is an organic molecule, M is a metal atom, and X is a halogen atom or a chalcogen atom, and a polymer having an acid dissociation constant pKa of 3 or less.

Solar cell

An object of the present invention is to provide a solar cell that is excellent in photoelectric conversion efficiency, suffers little degradation during encapsulation (initial degradation), has high-humidity durability, and is excellent in temperature cycle resistance. The present invention provides a solar cell including: a laminate having an electrode, a counter electrode, and a photoelectric conversion layer disposed between the electrode and the counter electrode; and an encapsulation material covering the counter electrode to encapsulate the laminate, the photoelectric conversion layer including an organic-inorganic perovskite compound represented by the formula: R-M-X, R representing an organic molecule, M representing a metal atom, X representing a halogen atom or a chalcogen atom, the encapsulation material including a resin having at least one skeleton selected from the group consisting of polyisobutylene, polyisoprene, and polybutadiene.

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Osaka, Japan

Tetsuya Kurebayashi