Photoelectrochemical cells with tungsten trioxide/Mo-doped BiVO 4 bilayers

Kan Zhang, Xin Jian Shi, Jung Kyu Kim, Jong Hyeok Park

Research output: Contribution to journalArticle

83 Citations (Scopus)

Abstract

Mo-doped BiVO 4 nanocrystals with low bandgap energy were embedded into the surface of WO 3 film, resulting in WO 3/BiV 0.95Mo 0.05O 4 photoanodes, which were tested in photoelectrochemical cells for water splitting. Bilayer photoelectrochemical cells showed enhanced photocurrent density: three times that shown by a cell with a pure WO 3 photoanode and 1.5 times that of a cell with a WO 3/BiVO 4 bilayer photoanode. BiVO 4 showed poor charge carrier mobility; the performance of photoelectrochemical cells can be improved only when BiVO 4 is combined with a WO 3 bottom layer, even after Mo doping and tailoring its transition energies by atomic doping.

Original languageEnglish
Pages (from-to)11119-11124
Number of pages6
JournalPhysical Chemistry Chemical Physics
Volume14
Issue number31
DOIs
Publication statusPublished - 2012 Aug 21

Fingerprint

Photoelectrochemical cells
tungsten
cells
Doping (additives)
Carrier mobility
Charge carriers
Photocurrents
Nanocrystals
Energy gap
water splitting
carrier mobility
Water
photocurrents
charge carriers
nanocrystals
tungsten oxide
energy

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy(all)
  • Physical and Theoretical Chemistry

Cite this

Zhang, Kan ; Shi, Xin Jian ; Kim, Jung Kyu ; Park, Jong Hyeok. / Photoelectrochemical cells with tungsten trioxide/Mo-doped BiVO 4 bilayers. In: Physical Chemistry Chemical Physics. 2012 ; Vol. 14, No. 31. pp. 11119-11124.
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Photoelectrochemical cells with tungsten trioxide/Mo-doped BiVO 4 bilayers. / Zhang, Kan; Shi, Xin Jian; Kim, Jung Kyu; Park, Jong Hyeok.

In: Physical Chemistry Chemical Physics, Vol. 14, No. 31, 21.08.2012, p. 11119-11124.

Research output: Contribution to journalArticle

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