Array of CdSe QD-sensitized ZnO nanorods serves as photoanode for water splitting

N. Chouhan, C. L. Yeh, S. F. Hu, J. H. Huang, C. W. Tsai, R. S. Liu, W. S. Chang, K. H. Chen

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Abstract

Aqueous chemically grown ZnO nanorods (NRs) arrays were sensitized by CdSe quantum dots (QDs) and were investigated as photoanode for photoelectrochemical water splitting under visible light (>420 nm) illumination. Significant enhancement of the factors 1.6 and 6 was observed for CdSe (QD)-sensitized nonannealed and annealed samples of ZnO NRs over pristine ZnO NRs arrays, respectively. The highest photocurrent density of 2.48 mA/ cm2 was registered for the annealed CdSe (QD)/ZnO (NR) arrays films at zero applied voltage and 100 mW/ cm2 (AM 1.5 G, Air Mass 1.5 Global) power density and their corresponding photocurrent density for pristine ZnO NR array was recorded as 0.41 mA/ cm2.

Original languageEnglish
Pages (from-to)B1430-B1433
JournalJournal of the Electrochemical Society
Volume157
Issue number10
DOIs
Publication statusPublished - 2010 Sep 7

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ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Renewable Energy, Sustainability and the Environment
  • Surfaces, Coatings and Films
  • Electrochemistry
  • Materials Chemistry

Cite this

Chouhan, N., Yeh, C. L., Hu, S. F., Huang, J. H., Tsai, C. W., Liu, R. S., Chang, W. S., & Chen, K. H. (2010). Array of CdSe QD-sensitized ZnO nanorods serves as photoanode for water splitting. Journal of the Electrochemical Society, 157(10), B1430-B1433. https://doi.org/10.1149/1.3473788