Rapid Communication in Photoscience

  • 제4권4호
  • /
  • Pages.79-81
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  • 2015
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  • 2234-8182(pISSN)
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  • 2288-4564(eISSN)
한국광과학회 (Korean Society of Photoscience)
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Control the crystal size by varying concentrations of precursors for the planar perovskite solar cells

  • Xie, Lin (Department of Chemistry and Nano Science, Global Top 5 Research Program, EwhaWomans University) ;
  • Hwang, Heewon (Department of Chemistry and Nano Science, Global Top 5 Research Program, EwhaWomans University) ;
  • Kim, Minjung (Department of Chemistry and Nano Science, Global Top 5 Research Program, EwhaWomans University) ;
  • Kim, Kyungkon (Department of Chemistry and Nano Science, Global Top 5 Research Program, EwhaWomans University)
  • 투고 : 2015.12.09
  • 심사 : 2015.12.24
  • 발행 : 2015.12.31
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초록

The influence of the grain size of the $CH_3NH_3PbI_3$ on the solar cell performance is investigated by controlling the ratio between $CH_3NH_3I$ and $PbI_2$ precursors. As the concentration of the precursors increased from 1.0M to 2.0M, the $CH_3NH_3PbI_3$ grain size increased from ~100nm to ~400nm. The solar cell utilizing the $CH_3NH_3PbI_3$ with large grain size shows improved photocurrent compared to the solar cell utilizing $CH_3NH_3PbI_3$ with small grain size, which is ascribed to the reduced recombination at the boundaries of grains.

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참고문헌

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