Mixed cation perovskite solid state solar cell and fabrication thereof

US11195959B2 · kind B2 · utility

Assignees

• ECOLE POLYTECHNIQUE FEDERALE DE LAUSANNE (EPFL) · CH
• PANASONIC HOLDINGS CORPORATION · JP

Inventors

• Michael Saliba · Darmstadt, DE
• Taisuke Matsui · Osaka, JP
• Konrad Domanski · Winterthur, CH
• Jiyoun Seo · Suwon-si, KR
• Shaik Mohammed Zakeeruddin · Vevey, CH
• Wolfgang Richard Tress · Lausanne, CH
• Michael Graetzel · Yverdon-les-Bains, CH

Key dates

• Filing date: Jul 3, 2017
• Grant date: Dec 7, 2021
• Expiry date: Jul 3, 2037

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y02E10/549
• WIPO field: Organic fine chemistry
• WIPO sector: Chemistry

Abstract

A perovskite material including an organic-inorganic perovskite structure of formula (I), AnMX3 (I), n being the number of cation A and an integer >4, A being a monovalent cation selected from inorganic cations Ai and/or from organic cations Ao, M being a divalent metal cation or a combination thereof, X being a halide and/or pseudohalide anion or a combination thereof, wherein at least one cation A is selected from organic cations Ao, the inorganic cations Ai are independently selected from Li+, Na+, K+, Rb+, Cs+, or Tl+ and the organic cations Ao are independently selected from ammonium (NH4+), methyl ammonium (MA) (CH3NH3+), ethyl ammonium (CH3CH2NH3)+, formamidinium (FA) (CH(NH2)2+), methylformamidinium (CH3C(NH2)2+), guanidium (C((NH)2)3+), tetramethylammonium ((CH3)4N+), dimethylammonium ((CH3)2NH2+) or trimethylammonium ((CH3)3NH+).