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Title: |
Research on Electrochromic Mechanism of WO3 Thin Film |
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Source: |
Proceedings of the 7th National Conference on Functional Materials and Applications (FMA 2010 E-BOOK)
(pp 1067-1071)
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Author(s): |
Wei Niu, Materials and Metallurgical Institute, Northeastern University, Shenyang, China
Xiao-guo Bi, Department of Energy and Power Engineering, Shen yang Institute of Engineering, Shenyang, China
Xu-dong Sun, Materials and Metallurgical Institute, Northeastern University, Shenyang, China |
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Abstract: |
WO3 is excellent electrochromic materials, which can be used in the information display, smart window, secrecy and military camouflage fields. However there is no unified conclusion of WO3 electrochromic mechanism because electrochromic process is so complicated, involving the chemical composition of materials, films structure, band structure, redox properties etc. Thereby WO3 electrochromic device are limited on design, performance optimization and application.In this paper, main models about WO3 electrochromic mechanism are discussed, namely，electrochemical reaction model, color center model, valence transition model, polaron model, energy level model and ligand field model. Limitations of each model are analyzed. Further studying and mastering WO3 electrochromic mechanism is the key to put into practical application.
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