Advances in materials Research

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Fabrication and characterization of perovskite CH3NH3Pb1-xSbxI3-3xBr3x photovoltaic devices

  • Yamanouchi, Jun (Department of Materials Science, The University of Shiga Prefecture) ;
  • Oku, Takeo (Department of Materials Science, The University of Shiga Prefecture) ;
  • Ohishi, Yuya (Department of Materials Science, The University of Shiga Prefecture) ;
  • Fukaya, Misaki (Department of Materials Science, The University of Shiga Prefecture) ;
  • Ueoka, Naoki (Department of Materials Science, The University of Shiga Prefecture) ;
  • Tanaka, Hiroki (Department of Materials Science, The University of Shiga Prefecture) ;
  • Suzuki, Atsushi (Department of Materials Science, The University of Shiga Prefecture)
  • Received : 2018.03.02
  • Accepted : 2018.10.22
  • Published : 2018.03.25
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Abstract

$TiO_2/CH_3NH_3Pb_{1-x}Sb_xI_{3-3x}Br_{3x}-based$ photovoltaic devices were fabricated by a spin-coating method using mixture solutions with $SbBr_3$. Effects of $SbBr3$, CsI or RbBr addition to $CH_3NH_3PbI_3$ precursor solutions on the photovoltaic properties where investigated. The short-circuit current densities and photoconversion efficiencies were improved by adding a small amount of $SbBr_3$, CsI or RbBr to the perovskite phase, which would be due to the doping effect of Sb, Br and Cs/Rb atom at the Pb, I and $CH_3NH3$ sites, respectively.

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