title: Enhanced Photocatalytic Performance Depending on Morphology of Bismuth Vanadate Thin Film Synthesized by Pulsed Laser Deposition.
abstract: We have fabricated high quality bismuth vanadate (BiVO4) polycrystalline thin films as photoanodes by pulsed laser deposition (PLD) without a postannealing process. The structure of the grown films is the photocatalytically active phase of scheelite-monoclinic BiVO4which was obtained by X-ray diffraction (XRD) analysis. The change of surface morphology for the BIVO4thin films depending on growth temperature during synthesis has been observed by scanning electron microscopy (SEM), and its influence on water splitting performance was investigated. The current density of the BiVO4film grown on a glass substrate covered with fluorine-doped tin oxide (FTO) at 230 °C was as high as 3.0 mA/cm2at 1.23 V versus the potential of the reversible hydrogen electrode (VRHE) under AM 1.5G illumination, which is the highest value so far in previously reported BiVO4films grown by physical vapor deposition (PVD) methods. We expect that doping of transition metal or decoration of oxygen evolution catalyst (OEC) in our BiVO4film might further enhance the performance.
authors.affiliation: School of Materials Science and Engineering, Gwangju Institute of Science and Technology , 123 Cheomdangwagi-ro, Buk-gu, Gwangju 61005, Republic of Korea.
authors.forename: Sang Yun
authors.initials: SY
authors.lastname: Jeong
authors.affiliation: The Advanced Nano Surface Research Group, Korea Basic Science Institute , 169-148 Gwahak-ro, Yuseong-gu, Daejeon 34133, Republic of Korea.
authors.forename: Kyoung Soon
authors.initials: KS
authors.lastname: Choi
authors.affiliation: School of Materials Science and Engineering, Gwangju Institute of Science and Technology , 123 Cheomdangwagi-ro, Buk-gu, Gwangju 61005, Republic of Korea.
authors.forename: Hye-Min
authors.initials: HM
authors.lastname: Shin
authors.affiliation: Department of Materials Science and Engineering, Research Institute of Advanced Materials, Seoul National University , 1 Gwanak-ro, Gwanak-gu, Seoul 08826, Republic of Korea.
authors.forename: Taemin Ludvic
authors.initials: TL
authors.lastname: Kim
authors.affiliation: School of Materials Science and Engineering, Gwangju Institute of Science and Technology , 123 Cheomdangwagi-ro, Buk-gu, Gwangju 61005, Republic of Korea.
authors.forename: Jaesun
authors.initials: J
authors.lastname: Song
authors.affiliation: School of Materials Science and Engineering, Gwangju Institute of Science and Technology , 123 Cheomdangwagi-ro, Buk-gu, Gwangju 61005, Republic of Korea.
authors.forename: Sejun
authors.initials: S
authors.lastname: Yoon
authors.affiliation: Department of Materials Science and Engineering, Research Institute of Advanced Materials, Seoul National University , 1 Gwanak-ro, Gwanak-gu, Seoul 08826, Republic of Korea.
authors.forename: Ho Won
authors.initials: HW
authors.lastname: Jang
authors.affiliation: School of Materials Science and Engineering, Gwangju Institute of Science and Technology , 123 Cheomdangwagi-ro, Buk-gu, Gwangju 61005, Republic of Korea.
authors.forename: Myung-Han
authors.initials: MH
authors.lastname: Yoon
authors.affiliation: The Advanced Nano Surface Research Group, Korea Basic Science Institute , 169-148 Gwahak-ro, Yuseong-gu, Daejeon 34133, Republic of Korea.
authors.forename: Cheolho
authors.initials: C
authors.lastname: Jeon
authors.affiliation: The Advanced Nano Surface Research Group, Korea Basic Science Institute , 169-148 Gwahak-ro, Yuseong-gu, Daejeon 34133, Republic of Korea.
authors.forename: Jouhahn
authors.initials: J
authors.lastname: Lee
authors.affiliation: School of Materials Science and Engineering, Gwangju Institute of Science and Technology , 123 Cheomdangwagi-ro, Buk-gu, Gwangju 61005, Republic of Korea.
authors.forename: Sanghan
authors.identifier: http://orcid.org/0000-0002-5807-864X
authors.initials: S
authors.lastname: Lee
keywords: bismuth vanadate; oxide photoanode; physical vapor deposition; pulsed laser deposition; water-splitting solar cell