Alternating current impedance and Raman spectroscopic study on electrochromic a-WO3 films
作者： Se-Hee Lee , Hyeonsik M. Cheong , C. Edwin Tracy , Angelo Mascarenhas , J. Roland Pitts
DOI: 10.1063/1.126817
关键词: Thin film 、 Analytical chemistry 、 Dielectric spectroscopy 、 Raman spectroscopy 、 Diffusion 、 Electrochromism 、 Raman scattering 、 Materials science 、 Lithium 、 Ion
摘要: The chemical diffusion of lithium ions in a-LixWO3 films is investigated using alternating current impedance spectroscopy and Raman scattering measurements. coefficients increase with increasing x up to x=0.072 then decrease. measurements show that the W6+=O/O–W6+–O ratio also increases at early stage insertion decreases further insertion. We conclude kinetics very closely related ratio.
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