Photoelectrochemical Characterization of Surface Modified CdTe for Hydrogen Production

Xavier Mathew, A. Bansal, J. A. Turner, Ramesh Dhere, N. R. Mathews, P. J. Sebastian

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19 Scopus Citations

Abstract

The photo electrochemical measurements of a p-CdTe/water PEC system are reported. The CdTe was prepared by close spaced sublimation on flexible metallic substrates. The p-CdTe is more stable in solutions with pH in the range of 7 to 10. Under one sun illumination the hydrogen evolution potential of the p-CdTe/electrolyte system shift significantly. The Vfb has a linear dependence on the pH of the solution. The hydrogen evolution onset potential is lower in solutions having low pH. It was observed that the open circuit potentials under dark and light has a different dependence on the pH of the solution. The modification of the p-CdTe surface with Ru improves both the hydrogen evolution efficiency and the stability of the photocathode.

Original languageAmerican English
Pages (from-to)149-154
Number of pages6
JournalJournal of New Materials for Electrochemical Systems
Volume5
Issue number2
StatePublished - Apr 2002

NREL Publication Number

  • NREL/JA-590-32584

Keywords

  • CdTe
  • Close Spaced Sublimation
  • Flat band potential
  • Hydrogen production
  • PEC
  • Water splitting

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