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PEROVSKITE COMPOUND AND LIGHT CONVERSION ELEMENT IN WHICH SAME IS USED NEW

外国特許コード F190009942
整理番号 (S2018-0263-N0)
掲載日 2019年10月24日
出願国 世界知的所有権機関(WIPO)
国際出願番号 2019JP000798
国際公開番号 WO 2019139153
国際出願日 平成31年1月11日(2019.1.11)
国際公開日 令和元年7月18日(2019.7.18)
優先権データ
  • 特願2018-004523 (2018.1.15) JP
発明の名称 (英語) PEROVSKITE COMPOUND AND LIGHT CONVERSION ELEMENT IN WHICH SAME IS USED NEW
発明の概要(英語) [Problem] To provide a Pb-free Sn-halide Perovskite solar cell in which photoelectric conversion efficiency is improved.
[Solution] A solar cell in which there is used a Perovskite compound comprising ABX3 (where A represents a cation, B represents a metal, X represents halogen, and A, B, and X may each be configured from a plurality of elements), B including Sn and Ge.
従来技術、競合技術の概要(英語) BACKGROUND ART
In recent years, perovskite compound, the light conversion efficiency is extremely high, have garnered attention. In the perovskite compound solar cell is a perovskite, a conventional solid-state dye-sensitized solar cell instead of the dye, forming a layer of a perovskite compound, the hole-transporting layer to form a solid, liquid electrolyte and dye is used in the prior art is higher than the conversion efficiency can be achieved using a large feature.
Perovskite such as perovskite compounds in the formation of a layer in the solar cell is, as the mold layer using the porous titanium film or the like, the mold layer, an organic solvent is dissolved in the perovskite compounds by spin-coating, different crystalline perovskite thin film can be formed by generally performed.
However, dye-sensitized solar cell, organic solar cells, solar cells have a perovskite, a typical printable solar cell. Of the conventional solar cell is a perovskite, perovskite Pb halide as a light absorption layer has a layer, a perovskite type Pb halide is a solar cell, the cell area is small, the photoelectric conversion efficiency is greater than 20% have been reported (Non-Patent Document 1). The conversion efficiency are commercially available inorganic solar cell efficiency approaching. Also, but the spoken presentation, a cell area of 1cm2 by the formula 15% as those of the photoelectric conversion efficiency have been reported.
Generally as a perovskite compound halide, CH3NH3PbI3 is used. The light absorption spectra of the perovskite compound halide in the end is 800nm. Further to 900nm as long as the photoelectric conversion, without lowering the open-circuit voltage can be improved efficiency. For example, the theoretical perovskite of the solar cell voltage loss from the 0.3V and the release voltage, 900nm of light in the visible light between FF: 0.7,IPCE(Incident Photon to Current Efficiency): 0.8 under the condition of assuming that the photoelectrical conversion, the conversion efficiency of 20.4% can be obtained. However, such as conventional CH3NH3PbI3 containing a Pb perovskite solar cell, a high environmental risks, Pb-free perovskite does not contain Pb in the development of the solar cell has been desired.
Currently, the Pb-free perovskite solar cell, a perovskite compound is used as the halogenated Sn perovskite Sn halide known solar cell. Perovskite compound is Sn halide, more than 1200nm has a light absorption spectrum is known, the detailed physical properties is not clear. In addition, a perovskite compound of Sn halide of a solar battery using the photoelectric conversion efficiency is not sufficient, it is possible to improve photoelectric conversion efficiency has been demanded.
  • 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
  • KYUSHU INSTITUTE OF TECHNOLOGY
  • 発明者(英語)
  • HAYASE Shuzi
  • ITO Nozomi
国際特許分類(IPC)
指定国 National States: AE AG AL AM AO AT AU AZ BA BB BG BH BN BR BW BY BZ CA CH CL CN CO CR CU CZ DE DJ DK DM DO DZ EC EE EG ES FI GB GD GE GH GM GT HN HR HU ID IL IN IR IS JO JP KE KG KH KN KP KR KW KZ LA LC LK LR LS LU LY MA MD ME MG MK MN MW MX MY MZ NA NG NI NO NZ OM PA PE PG PH PL PT QA RO RS RU RW SA SC SD SE SG SK SL SM ST SV SY TH TJ TM TN TR TT TZ UA UG US UZ VC VN ZA ZM ZW
ARIPO: BW GH GM KE LR LS MW MZ NA RW SD SL SZ TZ UG ZM ZW
EAPO: AM AZ BY KG KZ RU TJ TM
EPO: AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
OAPI: BF BJ CF CG CI CM GA GN GQ GW KM ML MR NE SN ST TD TG
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