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      Organometal Halide Perovskites as Visible-Light Sensitizers for Photovoltaic Cells

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      Journal of the American Chemical Society

      American Chemical Society (ACS)

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          Abstract

          Two organolead halide perovskite nanocrystals, CH(3)NH(3)PbBr(3) and CH(3)NH(3)PbI(3), were found to efficiently sensitize TiO(2) for visible-light conversion in photoelectrochemical cells. When self-assembled on mesoporous TiO(2) films, the nanocrystalline perovskites exhibit strong band-gap absorptions as semiconductors. The CH(3)NH(3)PbI(3)-based photocell with spectral sensitivity of up to 800 nm yielded a solar energy conversion efficiency of 3.8%. The CH(3)NH(3)PbBr(3)-based cell showed a high photovoltage of 0.96 V with an external quantum conversion efficiency of 65%.

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          Author and article information

          Journal
          Journal of the American Chemical Society
          J. Am. Chem. Soc.
          American Chemical Society (ACS)
          0002-7863
          1520-5126
          May 06 2009
          May 06 2009
          : 131
          : 17
          : 6050-6051
          Article
          10.1021/ja809598r
          19366264
          © 2009
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