旋涂-热解法制备WO_3薄膜  

Preparation of the WO_3 Film by the Spin Coating-Pyrolysis Method

作　　者：杨海涛[1] 尚福亮[2] 高玲[1] 韩海涛[2] 

机构地区：[1]深圳大学材料学院深圳市特种功能材料重点实验室,广东深圳518060 [2]武汉理工大学材料复合新技术国家重点实验室,湖北武汉430070

出　　处：《中国钨业》2006年第5期28-31,36,共5页China Tungsten Industry

基　　金：教育部科学技术研究重点项目(02049);国家基金重大国际合作子项目(50220160657)

摘　　要：采用旋涂-热解工艺,以双亲嵌段共聚物F127为软模板剂,合成出WO3薄膜。通过TG-DSC、XRD、SEM等对其热处理温度、晶相组成和显微形貌进行了测试,结果表明所制备的WO3薄膜材料在350℃时主要为非晶WO3,同时含有少量六方晶相,而在500℃时则主要为尺寸在微米极的单斜晶相;电化学循环伏安和光谱测试分析表明该350℃时制备的薄膜具有更好的电致变色性能,对可见光具有较好的调制功能,其最大透过率调制幅度可达55.4%。The WO3 film is prepared by the Spin coating-Pyrolysis method with the amphiphilic block copolymer F127 as the soft template. The heat treatment temperature, crystalline phase and microstructure of the WO3 film are tested through the TG-DSC, XRD and SEM techniques respectively. The results shows that the film is in general amorphous WO3 with a little hexagonal WO3 when in 350℃ and monoclinic crystal WO3 in 500℃. It also shows that the mesoporous WO3 film enjoys a good electrochromic performace by the electrochemical cyclic voltammetry and UV-Vis spectrum. The 350℃film possesses excellent modulation to the visible light and the maximal transmittance modulation scope reaches 55.4%.

关 键 词：WO3 薄膜 热处理 电致变色 

分 类 号：O614.613[理学—无机化学]