Microstructures of Electrochromic MoO3 Thin Films Colored by Injection of Different Cations
Microstructures of Electrochromic MoO3 Thin Films Colored by Injection of Different Cations
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DOI：
10.1021/jp9825922
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发表时间：
1998-10
影响因子：
3.3
通讯作者：
Yongan Yang;Yongjun Cao;B. Loo;J. Yao
中科院分区：
文献类型：
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作者：
Yongan Yang;Yongjun Cao;B. Loo;J. Yao
利用拉曼显微镜研究了经光致变色（PC）或电致变色（EC）处理的非晶MoO 3薄膜的微观结构特性。当薄膜经历PC或EC着色和脱色循环时，拉曼光谱发生可逆变化。通过拉曼谱带的位移，研究了PC和EC处理对钼青铜的影响。在表面光电压谱实验中也观察到了同样的现象。因此，可以得出结论，钼青铜的微观结构受到着色手段（PC或EC过程）的影响;在EC过程中注入的阳离子与三配位的O原子键合，而在PC过程中注入的H+离子与三配位和双配位的O原子键合。通过EC过程注入的阳离子的大小对着色膜的微观结构几乎没有影响。
Raman microscopy was used to investigate microstructural properties of amorphous MoO3 thin films that had been subjected to a photochromic (PC) or electrochromic (EC) process. The Raman spectra changed reversibly when the films went through PC or EC coloration and decoloration cycles. Different molybdenum bronzes were produced with PC and EC treatments, as indicated by the shifts in the Raman bands. The same observation was made in the surface photovoltage spectral experiments. Hence, it was concluded that the microstructure of molybdenum bronze was affected by the coloration means (PC or EC process); the injected cations in an EC process were bonded to the triply coordinated O atoms, whereas the injected H+ ions in a PC process were bonded to both the triply coordinated and doubly coordinated O atoms. The size of the injected cations via EC processes had little effect on the microstructure of the colored films.