Construction and Photoelectric Conversion Properties of WO3/BiVO4 Composite Film Photoelectrode

Journal Title: 河南科技大学学报(自然科学版) - Year 2019, Vol 40, Issue 4

Abstract

WO3 and BiVO4 semiconductor films eletrodes were prepared by polymer-assisted deposition method and metal-organic decomposition method, respectively. The band structures of WO3 and BiVO4 semiconductor films eletrode were characterized by solid-state UV-vis diffuse reflectance spectroscopy, electrochemical impedance spectroscopy and linear sweep voltammetry. The WO3/BiVO4 heterojunction composite photoelectrodes were prepared, and their cross-section morphology, crystal structure and elemental composition were analyzed by scanning electron microscopy, X-ray diffraction and X-ray photoelectron spectroscopy, respectively. The photoelectric conversion performance of WO3/BiVO4 composite photoelectrode was also studied. The results show that between the monoclinic WO3 and BiVO4, type Ⅱ heterojunction is formed with the film thickness about 450 nm. At the applied potential of 1.23 V versus the reversible hydrogen electrode, the photocurrent density of WO3/BiVO4 composite photoelectrode is 1.926 mA/cm2, which reveals better photoelectric conversion performance.

Authors and Affiliations

Yuan ZHANG, Weiwei LU

Keywords

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  • EP ID EP553935
  • DOI 10.15926/j.cnki.issn1672-6871.2019.04.017
  • Views 63
  • Downloads 0

How To Cite

Yuan ZHANG, Weiwei LU (2019). Construction and Photoelectric Conversion Properties of WO3/BiVO4 Composite Film Photoelectrode. 河南科技大学学报(自然科学版), 40(4), 94-99. https://europub.co.uk/articles/-A-553935