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      All solution-processed lead halide perovskite-BiVO4 tandem assembly for photolytic solar fuels production.

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          Abstract

          The quest for economic, large-scale hydrogen production has motivated the search for new materials and device designs capable of splitting water using only energy from the sun. Here we introduce an all solution-processed tandem water splitting assembly composed of a BiVO4 photoanode and a single-junction CH3NH3PbI3 hybrid perovskite solar cell. This unique configuration allows efficient solar photon management, with the metal oxide photoanode selectively harvesting high energy visible photons, and the underlying perovskite solar cell capturing lower energy visible-near IR wavelengths in a single-pass excitation. Operating without external bias under standard AM 1.5G illumination, the photoanode-photovoltaic architecture, in conjunction with an earth-abundant cobalt phosphate catalyst, exhibits a solar-to-hydrogen conversion efficiency of 2.5% at neutral pH. The design of low-cost tandem water splitting assemblies employing single-junction hybrid perovskite materials establishes a potentially promising new frontier for solar water splitting research.

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          Author and article information

          Journal
          J. Am. Chem. Soc.
          Journal of the American Chemical Society
          1520-5126
          0002-7863
          Jan 21 2015
          : 137
          : 2
          Affiliations
          [1 ] Radiation Laboratory, University of Notre Dame , Notre Dame, Indiana 46556, United States.
          Article
          10.1021/ja511739y
          25543877
          80bfe886-54eb-4079-a109-c7448210240c
          History

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