Sekisui Chemical Co., Ltd.

Mayumi Horiki

Shunji Ohara

Akinobu Hayakawa

Tomohito Uno

Taku Sasaki

Motohiko Asano

Tetsuya Kurebayashi

Yuuichirou Fukumoto

Kazushi Ito

The present invention aims to provide a solar cell in which a decrease in photoelectric conversion efficiency due to continuous exposure to light (photodegradation) is reduced, and a method of producing the solar cell. The present invention relates to a solar cell, including: an electrode; a counter electrode; and a photoelectric conversion layer between the electrode and the counter electrode, 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, the solar cell satisfying the formula (1):()/(0,)&#x3c;5&#x2003;&#x2003;(1)where N(0, I) is a carrier density of the organic-inorganic perovskite compound immediately after start of exposure of the solar cell to light at an intensity of I mW/cm, and N(T, I) is the carrier density of the organic-inorganic perovskite compound after continuous exposure of the solar cell to light at an intensity of I mW/cmfor T hour/hours.

Solar cell and solar cell manufacturing method

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.

Solar cell

The present invention aims to provide a method of producing a solar cell which can produce a porous inorganic oxide layer that has a high porosity and contains less impurities even by low-temperature firing. The present invention also aims to provide a solar cell produced by the method of producing a solar cell. The present invention directs to a method of producing a solar cell. The method includes: applying an inorganic oxide paste that contains inorganic oxide fine particles, a binder resin, and an organic solvent to a surface of a base to form an inorganic oxide layer on the base, the base including a conductive layer as an outermost layer thereof, the surface being a conductive layer-side surface; firing the inorganic oxide layer; irradiating the inorganic oxide layer with active energy rays or subjecting the inorganic oxide layer to ozonolysis to form a porous inorganic oxide layer; and laminating a semiconductor on the porous inorganic oxide layer.

Method for manufacturing solar cell, and solar cell

Growing community of inventors

Osaka, Japan

Mayumi Horiki