溶剂体系对c轴择优取向ZnO薄膜结构和光学性质的影响  

Effect of solvent on the structure and optical properties of c-axis oriented ZnO thin films

作　　者：郑春满[1] 宋植彦[1] 魏海博[1] 帖楠[1] 

机构地区：[1]国防科技大学航天科学与工程学院材料科学与工程系,湖南长沙410073

出　　处：《功能材料》2013年第13期1896-1899,共4页Journal of Functional Materials

基　　金：湖南省自然科学基金资助项目(10JJ4045);国防科技大学校预研资助项目(JC08-01-06)

摘　　要：以无水乙醇、乙二醇甲醚、乙二醇甲醚/乙醇混合溶液(1∶1)为溶剂体系,采用溶胶-凝胶法制备了ZnO透明薄膜,并利用场发射扫描电镜、X射线衍射和反射光谱仪等研究了溶剂体系对薄膜组成、结构和光学性能的影响。结果表明,3种溶剂所制备的ZnO薄膜均为六方纤锌矿型结构,具有c轴择优取向;以乙二醇单甲醚/乙醇混合溶液(1∶1)为溶剂制备的ZnO薄膜平整、致密,在可见光区域透光率达到90%左右,禁带宽度为3.25eV,具备制作薄膜太阳能电池透明导电电极材料的应用价值。The ZnO films were prepared using ethanol,ethylene glycol ether or glycol ether/ethanol mixture（1∶1） as a solvent system by sol-gel methods.The composition,structure and optical properties were studied by means of scanning electron microscopy（SEM）,X-ray diffraction（XRD）,and spectral shape.The results showed that the films prepared using three solvent systems are all hexagonal wurtzite structure with c-axis oriented.The surface of ZnO films,which prepared using glycol ether/ethanol mixture（1∶1） as solvent is smooth and densification.In the visible region,the light transmittance of the ZnO thin films is about 90%,and the band gap is about 3.25eV,which can meet the material requirements for photoelectric devices such as photovoltaic solar cell.

关 键 词：ZNO薄膜 溶剂体系 结构 光学性质 溶胶-凝胶 

分 类 号：O648[理学—物理化学]