Photoactive Area Dependent Electrochemical Characteristics of Photoelectrochemical Cells

Sun-Young Park, E.M. Hong, Dong Chan Lim, J. Lee, Guido Mul

Research output: Contribution to journalArticleAcademicpeer-review

2 Citations (Scopus)
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Abstract

We demonstrate that the experimentally obtained photocurrent density (mA/cm2) of a WO3 based photoelectrochemical cell decreases as a function of increasing photoactive area. This trend is predominantly caused by a non-linear decrease in resistance of the interface between the conducting FTO electrode and the photoactive material (WO3), as determined by electrochemical impedance spectroscopy. In agreement with this observation is that the relatively high interfacial resistance of large area electrodes can be reduced by introduction of conductive layers, as is evident from improved photocurrents obtained for relatively large, graphitized C70 modified WO3 photo-electrodes.
Original languageUndefined
Pages (from-to)H105-H109
JournalJournal of the Electrochemical Society
Volume163
Issue number2
DOIs
Publication statusPublished - 25 Nov 2016

Keywords

  • METIS-313866
  • IR-99850

Cite this

Park, Sun-Young ; Hong, E.M. ; Lim, Dong Chan ; Lee, J. ; Mul, Guido. / Photoactive Area Dependent Electrochemical Characteristics of Photoelectrochemical Cells. In: Journal of the Electrochemical Society. 2016 ; Vol. 163, No. 2. pp. H105-H109.
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Photoactive Area Dependent Electrochemical Characteristics of Photoelectrochemical Cells. / Park, Sun-Young; Hong, E.M.; Lim, Dong Chan; Lee, J.; Mul, Guido.

In: Journal of the Electrochemical Society, Vol. 163, No. 2, 25.11.2016, p. H105-H109.

Research output: Contribution to journalArticleAcademicpeer-review

TY - JOUR

T1 - Photoactive Area Dependent Electrochemical Characteristics of Photoelectrochemical Cells

AU - Park, Sun-Young

AU - Hong, E.M.

AU - Lim, Dong Chan

AU - Lee, J.

AU - Mul, Guido

PY - 2016/11/25

Y1 - 2016/11/25

N2 - We demonstrate that the experimentally obtained photocurrent density (mA/cm2) of a WO3 based photoelectrochemical cell decreases as a function of increasing photoactive area. This trend is predominantly caused by a non-linear decrease in resistance of the interface between the conducting FTO electrode and the photoactive material (WO3), as determined by electrochemical impedance spectroscopy. In agreement with this observation is that the relatively high interfacial resistance of large area electrodes can be reduced by introduction of conductive layers, as is evident from improved photocurrents obtained for relatively large, graphitized C70 modified WO3 photo-electrodes.

AB - We demonstrate that the experimentally obtained photocurrent density (mA/cm2) of a WO3 based photoelectrochemical cell decreases as a function of increasing photoactive area. This trend is predominantly caused by a non-linear decrease in resistance of the interface between the conducting FTO electrode and the photoactive material (WO3), as determined by electrochemical impedance spectroscopy. In agreement with this observation is that the relatively high interfacial resistance of large area electrodes can be reduced by introduction of conductive layers, as is evident from improved photocurrents obtained for relatively large, graphitized C70 modified WO3 photo-electrodes.

KW - METIS-313866

KW - IR-99850

U2 - 10.1149/2.0721602jes

DO - 10.1149/2.0721602jes

M3 - Article

VL - 163

SP - H105-H109

JO - Journal of the Electrochemical Society

JF - Journal of the Electrochemical Society

SN - 0013-4651

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