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Article

Effect of Radio-Frequency Power on the Composition of BiVO4 Thin-Film Photoanodes Sputtered from a Single Target

1
Institute of Applied Physics, University of Tsukuba, Tsukuba 305-8573, Ibaraki, Japan
2
Alliance for Research on the Mediterranean and North Africa (ARENA), University of Tsukuba, Tsukuba 305-8573, Ibaraki, Japan
3
Department of Chemistry, Konan University, Kobe 658-8501, Hyogo, Japan
*
Authors to whom correspondence should be addressed.
Academic Editor: Dipali S. Patil
Energies 2021, 14(8), 2122; https://doi.org/10.3390/en14082122
Received: 7 February 2021 / Revised: 24 March 2021 / Accepted: 7 April 2021 / Published: 10 April 2021
(This article belongs to the Special Issue Advanced Materials for Supercapacitor Electrodes)
BiVO4 films were fabricated by radio frequency (RF) sputtering from a single target. The deposited BiVO4 films were found to be rich in Bi, and the reason for the Bi-richness was investigated. It was inferred from the Monte Carlo simulation that, during sputtering, the transfer process of target atoms through argon gas played a major role in this phenomenon. The transfer process resulted in an imbalanced ratio of Bi and V, arising from the difference in atom mass and interaction radius. The high RF power was found to be effective in adjusting the Bi/V ratio, influencing the sputtering yield. This type of preferential sputtering was maintained by the diffusion of target atoms from the bulk to the surface. BiVO4 films with monoclinic scheelite crystal structures were obtained at high RF power values and found to exhibit photocatalytic performances beneficial for photoanodic applications. View Full-Text
Keywords: photocatalyst; bismuth vanadate films; RF sputtering; compound target photocatalyst; bismuth vanadate films; RF sputtering; compound target
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MDPI and ACS Style

Liu, J.; Tajima, K.; Abdellaoui, I.; Islam, M.M.; Ikeda, S.; Sakurai, T. Effect of Radio-Frequency Power on the Composition of BiVO4 Thin-Film Photoanodes Sputtered from a Single Target. Energies 2021, 14, 2122. https://doi.org/10.3390/en14082122

AMA Style

Liu J, Tajima K, Abdellaoui I, Islam MM, Ikeda S, Sakurai T. Effect of Radio-Frequency Power on the Composition of BiVO4 Thin-Film Photoanodes Sputtered from a Single Target. Energies. 2021; 14(8):2122. https://doi.org/10.3390/en14082122

Chicago/Turabian Style

Liu, Jiaqi, Kazuya Tajima, Imane Abdellaoui, Muhammad M. Islam, Shigeru Ikeda, and Takeaki Sakurai. 2021. "Effect of Radio-Frequency Power on the Composition of BiVO4 Thin-Film Photoanodes Sputtered from a Single Target" Energies 14, no. 8: 2122. https://doi.org/10.3390/en14082122

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