PDF (1321K)
摘要
采用过氧化聚钨酸法制备WO3溶胶,在ITO导电玻璃基体上采用旋涂法制备WO3薄膜。主要探讨了退火温度对WO3薄膜结构与电变色性能、响应时间和循环稳定性的影响。热重和X射线衍射分析结果表明:热处理温度应低于320℃时,WO3薄膜为非晶态。在240～320℃范围内,随着热处理温度升高,光密度变化量降低即电致变色性能变差,着-褪色时间延长,而薄膜的循环稳定性越来越好。经320℃退火处理的WO3薄膜形成晶态,稳定性好,此时该电致变色薄膜的着-褪色响应时间分别为2.76和1.30s。
Abstract
WO3 sol was prepared by polywolframic acid oxidation process,and then WO3 film was prepared on ITO glass by spin coating method.The effect of heat treatment on film structure,the electrochromic performance,the response time and circle stability were studied.TG and XRD analysis showed that WO3 film was amorphous state when the heat temperature was lower than 320℃.During 240～320℃,with the heat temperature rising,electrochromic performance reduced,the response time was longer,but the circle stability was better.WO3 was crystallization after 320℃ heat treatment and its stability was nice,and electrochromic response time was 2.76s/1.30s.
关键词
WO3薄膜
/
电致变色
/
响应时间
/
热处理温度
Key words
WO3 film
/
electrochromism
/
response time
/
heat treatment temperature
热处理温度对电致变色玻璃用WO3薄膜性能的影响研究[J].
化工新型材料, 2018, 46(2): 111-113 DOI:
[1] Deb S K.Optical and photoelectric properties and colour centres in thin film of tungsten oxides[J].Philos Mag,2012,27(4):801-822.[2] Shirmer O F,Shiremer O F,Wittwer V,et al.Dependence of WO3 electrochromic adsorption on crystallinity[J].J Electrochem Soc,1977,124(5):749-753.
[3] 吴广明,吴永刚,倪星元,等.WO3和V2O5薄膜电致变色器件特性研究[J].同济大学学报,1998,26(2):211-216.
[4] 罗宇强,李筱琳,任豪,等.不同膜厚WO3薄膜的电致变色特性研究[J].太阳能学报,2004,25(5):647-650.
[5] 代富平,吕淑媛,冯博学,等.非晶态WO3薄膜电致变色特性的研究[J].物理学报,2003,52(4):1003-1008.
[6] 陈怡,徐征,孙金礼,等.大面积智能电致变色玻璃的产业化现状及未来[J].功能材料,2013,44(17):2441-2446.
[7] 章俞之,胡行方.新型节能材料——电致变色材料及器件[C].上海:21世纪太阳能新技术——2003年中国太阳能学会学术年会论文集,2003.
[8] 宋宇,童帅.电致变色玻璃研究及应用[J].玻璃,2009,41(12):40-43.
[9] 赵鹏.致变色材料在建筑节能窗上的应用[J].保温材料与建筑节能,1998(12):29-31.
[10] Fu C P,Foo C Y,Lee P S.One-step facile electrochemical preparation of WO3/graphene nanocomposites with improved electrochromic properties[J].Electrochimica Acta,2014,117(4):139-144.
基金资助
天津市科技计划项目(15JCTPJC61100)
