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Journal of the Korean Physical Society

, Volume 66, Issue 10, pp 1586–1592 | Cite as

Effects of graphene oxide (GO) on GO-Cu2O composite films grown by using electrochemical deposition for a PEC photoelectrode

  • Tae Gyoum Kim
  • Hyukhyun RyuEmail author
  • Won-Jae Lee
  • Jang-Hee Yoon
Article

Abstract

In this study, GO-Cu2O composite films were grown on fluorine-doped tin-oxide (FTO) substrates with various amounts of GO by using an electrochemical deposition. We investigated the effects of the GO content on the morphological, structural, optical, and photoelectrochemical (PEC) properties of the GO-Cu2O composite film and on its XPS spectrum. The highest XRD (111) peak intensity was obtained for the 10-wt% sample, which had an optical energy band gap of 2.15 eV. However, the highest photocurrent density was -4.74 mA/cm2 for the 1-wt% sample, which had an optical energy band gap of 1.94 eV. The photocurrent density for the 1-wt% sample was approximately 1.75 times greater than that for the 0-wt% sample. From the XPS measurements, we observed that the oxygen concentration for the sample with 1-wt% GO was higher than it was for the 0-wt% GO, which may have improved the photocurrent density of the sample with 1-wt% GO.

Keywords

Photoelectrochemical (PEC) GO-Cu2O composite film X-ray photoelectron spectroscopy (XPS) Electrochemical deposition 

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Copyright information

© The Korean Physical Society 2015

Authors and Affiliations

  • Tae Gyoum Kim
    • 1
  • Hyukhyun Ryu
    • 1
    Email author
  • Won-Jae Lee
    • 2
  • Jang-Hee Yoon
    • 3
  1. 1.Department of Nano Science and Engineering, High Safety Vehicle Core Technology Research CenterInje UniversityGimhaeKorea
  2. 2.Department of Materials and Components EngineeringDong-Eui UniversityBusanKorea
  3. 3.High Technology Components & Materials Research CenterKorea Basic Science InstituteBusanKorea

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