TOP > 外国特許検索 > METHOD FOR PRODUCING TIN-BASED PEROVSKITE LAYER, METHOD FOR PURIFYING TIN DIHALIDE-BASED MATERIAL, SOLUTION, TIN-BASED PEROVSKITE LAYER, LIGHT-EMITTING MATERIAL, AND PHOTOELECTRIC CONVERSION DEVICE

METHOD FOR PRODUCING TIN-BASED PEROVSKITE LAYER, METHOD FOR PURIFYING TIN DIHALIDE-BASED MATERIAL, SOLUTION, TIN-BASED PEROVSKITE LAYER, LIGHT-EMITTING MATERIAL, AND PHOTOELECTRIC CONVERSION DEVICE

外国特許コード F210010433
整理番号 6470
掲載日 2021年5月14日
出願国 世界知的所有権機関(WIPO)
国際出願番号 2020JP008529
国際公開番号 WO2020175705
国際出願日 令和2年2月28日(2020.2.28)
国際公開日 令和2年9月3日(2020.9.3)
発明の名称 (英語) METHOD FOR PRODUCING TIN-BASED PEROVSKITE LAYER, METHOD FOR PURIFYING TIN DIHALIDE-BASED MATERIAL, SOLUTION, TIN-BASED PEROVSKITE LAYER, LIGHT-EMITTING MATERIAL, AND PHOTOELECTRIC CONVERSION DEVICE
発明の概要(英語) To provide: a tin-based perovskite layer that is highly purified by the removal of a trace amount of Sn4+ present in a system, the tin-based perovskite layer having good photoelectric conversion efficiency due to not being susceptible to the oxidation of Sn2+ to Sn4+; a tin-based perovskite layer having excellent passivation properties; and a method for producing such a tin-based perovskite layer. [Solution] The present invention provides: a method for producing a tin-based perovskite layer, the method comprising: a step for adding a reductant to a tin dihalide-containing solution to obtain a tin-based perovskite precursor solution; and a step for preparing a perovskite layer from the tin-based perovskite precursor solution, wherein the tin dihalide includes at least one selected from among tin iodide, tin bromide, and tin chloride, the tin-based perovskite precursor solution contains tin fluoride, and the reductant is a reductant that reduces tin fluoride to tin in the tin-based perovskite precursor solution but does not reduce tin dihalide to tin in the tin-based perovskite precursor solution; and a tin-based perovskite layer obtained by said method.
  • 出願人(英語)
  • ※2012年7月以前掲載分については米国以外のすべての指定国
  • KYOTO UNIVERSITY
  • 発明者(英語)
  • WAKAMIYA Atsushi
  • YAKUMARU Shinya
  • KANEMITSU Yoshihiko
  • HANDA Taketo
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