ELECTROCHROMIC BEHAVIOR OF SPUTTERED TITANIUM-OXIDE THIN-FILMS

被引：65
|
作者：
CANTAO, MP
CISNEROS, JI
TORRESI, RM
机构：
[1] UNIV SAO PAULO,INST QUIM SAO CARLOS,BR-13560970 SAO CARLOS,SP,BRAZIL
[2] UNIV ESTADUAL CAMPINAS,INST FIS GLEB WATAGHIN,BR-13083970 CAMPINAS,BRAZIL
来源：
THIN SOLID FILMS | 1995年 / 259卷 / 01期
基金：
巴西圣保罗研究基金会;
关键词：
ELECTROCHEMISTRY; SPUTTERING; TITANIUM OXIDE;
D O I：
10.1016/0040-6090(94)06401-6
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
The electrochromic reaction of titanium oxide films prepared by r.f. sputtering was studied. Chronoamperometric experiments associated with transmittance spectra in LiClO4-propylene carbonate solutions were carried out and compared with the optical properties of titanium oxide films with different stoichiometries. It was verified that the colour changes produced by stoichiometry deviation and by electro-intercalation are similar, because the maximum absorption bands in both cases are centred at the same wavelength and the molar absorption coefficients are similar; these observations can be explained by the mixed valence theory deduced for non-stoichiometric metallic oxides. The analysis of the j vs. E and [d(OD)/dt] vs. E potentiodynamic profiles is an interesting method for studying the kinetic mechanisms of electrochromic reactions without interference from parallel reactions.
引用
收藏
页码：70 / 74
页数：5
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