Selective modulation of charge-carrier transport of a photoanode in a photoelectrochemical cell by a graphitized fullerene interfacial layer

Sun-Young Park, Dong Chan Lim, E.M. Hong, J-Y. Lee, J. Heo, J.H. Lim, C.-L. Lee, K. Kim, Guido Mul

Research output: Contribution to journalArticleAcademicpeer-review

5 Citations (Scopus)
1 Downloads (Pure)

Abstract

We show that a graphitic carbon interfacial layer, derived from C70 by annealing at 500 °C, results in a significant increase in the attainable photocurrent of a photoelectrochemical cell that contains a WO3-functionalized fluorine-doped tin oxide (FTO) photoanode. Time-resolved photoluminescence spectroscopy, photoconductive atomic force microscopy, Hall measurements, and electrochemical impedance spectroscopy show that the increase in photocurrent is the result of fast and selective electron transport from optically excited WO3 through the graphitic carbon interfacial layer to the FTO-coated glass electrode. Thus the energy efficiency of perspective solar-to-fuel devices can be improved by modification of the interface of semiconductors and conducting substrate electrodes by using graphitized fullerene derivatives.
Original languageUndefined
Pages (from-to)172-176
JournalChemSusChem
Volume8
Issue number1
DOIs
Publication statusPublished - 2015

Keywords

  • IR-97073
  • METIS-311538

Cite this

Park, Sun-Young ; Lim, Dong Chan ; Hong, E.M. ; Lee, J-Y. ; Heo, J. ; Lim, J.H. ; Lee, C.-L. ; Kim, K. ; Mul, Guido. / Selective modulation of charge-carrier transport of a photoanode in a photoelectrochemical cell by a graphitized fullerene interfacial layer. In: ChemSusChem. 2015 ; Vol. 8, No. 1. pp. 172-176.
@article{e8037177030d4e4aad9ffc4b656edffb,
title = "Selective modulation of charge-carrier transport of a photoanode in a photoelectrochemical cell by a graphitized fullerene interfacial layer",
abstract = "We show that a graphitic carbon interfacial layer, derived from C70 by annealing at 500 °C, results in a significant increase in the attainable photocurrent of a photoelectrochemical cell that contains a WO3-functionalized fluorine-doped tin oxide (FTO) photoanode. Time-resolved photoluminescence spectroscopy, photoconductive atomic force microscopy, Hall measurements, and electrochemical impedance spectroscopy show that the increase in photocurrent is the result of fast and selective electron transport from optically excited WO3 through the graphitic carbon interfacial layer to the FTO-coated glass electrode. Thus the energy efficiency of perspective solar-to-fuel devices can be improved by modification of the interface of semiconductors and conducting substrate electrodes by using graphitized fullerene derivatives.",
keywords = "IR-97073, METIS-311538",
author = "Sun-Young Park and Lim, {Dong Chan} and E.M. Hong and J-Y. Lee and J. Heo and J.H. Lim and C.-L. Lee and K. Kim and Guido Mul",
year = "2015",
doi = "10.1002/cssc.201402577",
language = "Undefined",
volume = "8",
pages = "172--176",
journal = "ChemSusChem",
issn = "1864-5631",
publisher = "Wiley-VCH Verlag",
number = "1",

}

Selective modulation of charge-carrier transport of a photoanode in a photoelectrochemical cell by a graphitized fullerene interfacial layer. / Park, Sun-Young; Lim, Dong Chan; Hong, E.M.; Lee, J-Y.; Heo, J.; Lim, J.H.; Lee, C.-L.; Kim, K.; Mul, Guido.

In: ChemSusChem, Vol. 8, No. 1, 2015, p. 172-176.

Research output: Contribution to journalArticleAcademicpeer-review

TY - JOUR

T1 - Selective modulation of charge-carrier transport of a photoanode in a photoelectrochemical cell by a graphitized fullerene interfacial layer

AU - Park, Sun-Young

AU - Lim, Dong Chan

AU - Hong, E.M.

AU - Lee, J-Y.

AU - Heo, J.

AU - Lim, J.H.

AU - Lee, C.-L.

AU - Kim, K.

AU - Mul, Guido

PY - 2015

Y1 - 2015

N2 - We show that a graphitic carbon interfacial layer, derived from C70 by annealing at 500 °C, results in a significant increase in the attainable photocurrent of a photoelectrochemical cell that contains a WO3-functionalized fluorine-doped tin oxide (FTO) photoanode. Time-resolved photoluminescence spectroscopy, photoconductive atomic force microscopy, Hall measurements, and electrochemical impedance spectroscopy show that the increase in photocurrent is the result of fast and selective electron transport from optically excited WO3 through the graphitic carbon interfacial layer to the FTO-coated glass electrode. Thus the energy efficiency of perspective solar-to-fuel devices can be improved by modification of the interface of semiconductors and conducting substrate electrodes by using graphitized fullerene derivatives.

AB - We show that a graphitic carbon interfacial layer, derived from C70 by annealing at 500 °C, results in a significant increase in the attainable photocurrent of a photoelectrochemical cell that contains a WO3-functionalized fluorine-doped tin oxide (FTO) photoanode. Time-resolved photoluminescence spectroscopy, photoconductive atomic force microscopy, Hall measurements, and electrochemical impedance spectroscopy show that the increase in photocurrent is the result of fast and selective electron transport from optically excited WO3 through the graphitic carbon interfacial layer to the FTO-coated glass electrode. Thus the energy efficiency of perspective solar-to-fuel devices can be improved by modification of the interface of semiconductors and conducting substrate electrodes by using graphitized fullerene derivatives.

KW - IR-97073

KW - METIS-311538

U2 - 10.1002/cssc.201402577

DO - 10.1002/cssc.201402577

M3 - Article

VL - 8

SP - 172

EP - 176

JO - ChemSusChem

JF - ChemSusChem

SN - 1864-5631

IS - 1

ER -