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Decreased Surface Photovoltage of ZnO Photoanode Films via Optimal Annealing Temperature for Enhanced Photoelectrochemical Performance
Joint Authors
Liu, Yichong
Xiao, Bohuai
Chen, Haijian
Li, Yunchuan
Chang, Shuai
Source
Issue
Vol. 2019, Issue 2019 (31 Dec. 2019), pp.1-8, 8 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2019-01-27
Country of Publication
Egypt
No. of Pages
8
Main Subjects
Abstract EN
The electronic structure of semiconducting materials at the electrode/electrolyte interface plays a vital role in the process of photoelectrochemical (PEC) water splitting.
In this work, we could reliably tune the surface defect density of ZnO films through changing the annealing temperature, thereby optimizing the PEC performance.
The surface photovoltage (SPV) of ZnO films could be obtained by Kelvin probe force microscopy and compared to insightfully understand the effect of the annealing temperature on the performance of the electrode in PEC water splitting.
The minimum SPV annealed at 450°C indicated low surface defect density, eventually resulting in an enhanced photoelectrochemical performance.
The applied bias photo-to-current efficiency of ZnO films annealed at 450°C reached 0.237%, about 7.4 times that of unannealed ZnO photoanode.
This work provides an effective method for the rational fabrication of efficient photoelectrodes for the realization of high-performance photoelectrochemical water splitting.
American Psychological Association (APA)
Liu, Yichong& Xiao, Bohuai& Chen, Haijian& Li, Yunchuan& Chang, Shuai. 2019. Decreased Surface Photovoltage of ZnO Photoanode Films via Optimal Annealing Temperature for Enhanced Photoelectrochemical Performance. Journal of Nanomaterials،Vol. 2019, no. 2019, pp.1-8.
https://search.emarefa.net/detail/BIM-1183384
Modern Language Association (MLA)
Liu, Yichong…[et al.]. Decreased Surface Photovoltage of ZnO Photoanode Films via Optimal Annealing Temperature for Enhanced Photoelectrochemical Performance. Journal of Nanomaterials No. 2019 (2019), pp.1-8.
https://search.emarefa.net/detail/BIM-1183384
American Medical Association (AMA)
Liu, Yichong& Xiao, Bohuai& Chen, Haijian& Li, Yunchuan& Chang, Shuai. Decreased Surface Photovoltage of ZnO Photoanode Films via Optimal Annealing Temperature for Enhanced Photoelectrochemical Performance. Journal of Nanomaterials. 2019. Vol. 2019, no. 2019, pp.1-8.
https://search.emarefa.net/detail/BIM-1183384
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-1183384