Sr_(1～x)Ca_xMoO_4固溶体薄膜的室温电化学制备及表征  

Preparation of Sr_(1～x)Ca_xMoO_4 Solid Solution Thin Films at Room Temperature via Electrochemical Route and Characterization of the Films

作　　者：毕剑[1] 赖欣[1] 张姝[1] 崔春华[1] 史芳[1] 高道江[1] 

机构地区：[1]四川师范大学化学与材料科学学院,四川成都610066

出　　处：《材料保护》2007年第6期37-39,54,共4页Materials Protection

基　　金：国家自然科学基金(50472103);四川省教育厅重点基金(2004A90)

摘　　要：为全面研究钼酸盐金属氧化物薄膜的性质,在室温碱性Ca2+、Sr2+溶液中通过电化学阳极氧化制备了Sr1～xCaxMoO4多晶薄膜。采用XRD、SEM、XPS、荧光分析等测试手段,分析了薄膜的晶相结构、表面形貌、组成比及室温光致发光特性。结果表明,制备的Sr1～xCaxMoO4薄膜是四方晶相的多晶固溶体薄膜;可以通过调节溶液中Ca2+、Sr2+的组分比来控制薄膜的组分比;薄膜组分比的变化将对晶粒生长、晶格参数、薄膜表面形貌、光致发光特性等产生重要的影响。Sr1～xCaxMoO4 polycrystalline thin films were prepared from the alkaline solutions of 0.09≤CCa2+/(CCa2+ + CSr2+)≤0.91 at room temperature using electrochemical anode oxidation method.The variation in the electrode potential was studied,while the crystal phases,surface morphologies,elemental compositions,and light-induced luminescence of the as-deposited films were analyzed by means of X-ray diffraction,scanning electron microscopy,X-ray photoelectron spectroscopy,and X-ray fluorescence spectroscopy.The results showed that the as-deposited films were composed of polycrystalline solid solution of tetragonal phase Sr1～xCaxMoO4.The elemental compositions of the Sr1～xCaxMoO4 films could be well adjusted by controlling the ratio of Ca2+ to Sr2+ in the starting solutions,while the variation in the elemental compositions of the films had a significant effect on the growth of the grains,lattice constants,film morphology,and light-induced luminescence of the as-deposited films.

关 键 词：Sr1~xCaxMoO4薄膜 固溶体 电化学制备 表征 

分 类 号：TB383.2[一般工业技术—材料科学与工程]