4.8 Article

Effect of an Ultrathin TiO2 Layer Coated on Submicrometer-Sized ZnO Nanocrystallite Aggregates by Atomic Layer Deposition on the Performance of Dye-Sensitized Solar Cells

Journal

ADVANCED MATERIALS
Volume 22, Issue 21, Pages 2329-2332

Publisher

WILEY-V C H VERLAG GMBH
DOI: 10.1002/adma.200903219

Keywords

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Funding

  1. U.S. Department of Energy, the office of Basic Energy Sciences, Division of Materials and Engineering [DE-FG02-07ER46467]
  2. National Science Foundation [DMI-0455994, DMR-0605159]
  3. Air Force Office of Scientific Research (AFOSR-MURI) [FA9550-06-1-0326]
  4. Pacific Northwest National Laboratories (PNNL)
  5. National Center for Nanomaterials Technology (NCNT, Korea)
  6. Washington Research Foundation (WRF)
  7. University of Washington (TGIF)
  8. Intel Corporation
  9. NSF [DGE-0654252]

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An ultrathin TiO2 layer is successfully coated on the surface of sub-micrometersized aggregates of ZnO nanocrystallites through the atomic layer deposition (ALD) technique. The ZnO core/TiO2 shell structure increases the open-circuit voltage, without impairing the photocurrent density and results in an increased power conversion efficiency from 5.2% to 6.3%.

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