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Recent advances in solar cells and photo-electrochemical water splitting by scanning electrochemical microscopy |
Xiaofan ZHANG1,2(), Man LIU1, Weiqian KONG1, Hongbo FAN2 |
1. Henan Provincial Key Laboratory of Nanocomposite and Applications, Institute of Nanostructured Functional Materials, Huanghe Science and Technology College, Zhengzhou 450006, China 2. School of Environment and Civil Engineering, Dongguan University of Technology, Dongguan 523808, China |
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Abstract Investigation on the mechanism and kinetics of charge transfer at semiconductor/electrolyte interface is significant for improving the photoelectric conversion efficiency and developing novel and high-efficiency photovoltaic devices. Scanning electrochemical microscopy (SECM), as a powerful analytical technique, has a potential advantage of high spatial and temporal resolution. It has been expanded into a broad range of research fields since the first inception of SECM in 1989 by Bard groups, which includes biological, enzymes, corrosion, energy conversion and storage (such as solar cells, hydrogen and battery). Herein, we review the basic principles and the development of SECM, and chiefly introduce the recent advances of SECM investigation in photoelectrochemical (PEC) cells including solar cells and PEC water splitting. These advances include rapid screening of photocatalysts/photoelectrodes, interfacial reaction kinetics and quantitation of reaction intermediates, which is significant for evaluating the performance, choosing catalysts and developing novel composite photoanodes and high efficiency devices. Finally, we briefly describe the development trends of SECM in energy research.
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Keywords
scanning electrochemical microscopy (SECM)
solar cells
photoelectrochemical (PEC) water splitting
screening
kinetics
intermediates
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Corresponding Author(s):
Xiaofan ZHANG
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Just Accepted Date: 27 September 2018
Online First Date: 19 November 2018
Issue Date: 21 December 2018
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