Photocurrent instability of PbS-sensitized TiO2 electrodes in S2- and SO32- solution

Jin Sup Hong, Don Sung Choi, Man Gu Kang, Donghwan Kim, Kang Jin Kim

Research output: Contribution to journalArticle

16 Citations (Scopus)

Abstract

The mechanism of photocurrent decay with time of illumination of PbS-coated TiO2 (PbS/TiO2) photoelectrochemical cells in S2- and SO32- solution was investigated. The photocurrent decay at short circuit can primarily be attributed to the formation of PbSO4 on the surface of PbS, followed by the dissolution of PbSO4 into the aqueous solution. In the presence of pyridine or ethanol in the solution, the Jsc decay with time of illumination is reduced due to the suppression of the PbSO4 formation.

Original languageEnglish
Pages (from-to)87-92
Number of pages6
JournalJournal of Photochemistry and Photobiology A: Chemistry
Volume143
Issue number1
DOIs
Publication statusPublished - 2001 Oct 1

Keywords

  • PbS
  • PbSO
  • Photocurrent instability
  • TiO

ASJC Scopus subject areas

  • Chemistry(all)
  • Chemical Engineering(all)
  • Physics and Astronomy(all)

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