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

doi:10.1016/S1010-6030(01)00455-5

Photocurrent instability of PbS-sensitized TiO₂ electrodes in S^2- and SO₃^2- solution

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

Department of Materials Science and Engineering

Research output: Contribution to journal › Article › peer-review

16 Citations (Scopus)

Abstract

The mechanism of photocurrent decay with time of illumination of PbS-coated TiO₂ (PbS/TiO₂) photoelectrochemical cells in S^2- and SO₃^2- 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 J_sc decay with time of illumination is reduced due to the suppression of the PbSO₄ formation.

Original language	English
Pages (from-to)	87-92
Number of pages	6
Journal	Journal of Photochemistry and Photobiology A: Chemistry
Volume	143
Issue number	1
DOIs	https://doi.org/10.1016/S1010-6030(01)00455-5
Publication status	Published - 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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title = "Photocurrent instability of PbS-sensitized TiO2 electrodes in S2- and SO32- solution",

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.",

keywords = "PbS, PbSO, Photocurrent instability, TiO",

author = "Hong, {Jin Sup} and Choi, {Don Sung} and Kang, {Man Gu} and Donghwan Kim and Kim, {Kang Jin}",

note = "Funding Information: This work was supported by the Korea Research Foundation (KRF-2000-015-DP0301). ",

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T1 - Photocurrent instability of PbS-sensitized TiO2 electrodes in S2- and SO32- solution

AU - Hong, Jin Sup

AU - Choi, Don Sung

AU - Kang, Man Gu

AU - Kim, Donghwan

AU - Kim, Kang Jin

N1 - Funding Information: This work was supported by the Korea Research Foundation (KRF-2000-015-DP0301).

PY - 2001/10/1

Y1 - 2001/10/1

N2 - 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.

AB - 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.

KW - PbS

KW - PbSO

KW - Photocurrent instability

KW - TiO

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