【摘要】 采用溶胶-凝胶的方法在玻璃基片上制备了纳米ZnO薄膜,利用月桂酸钠、硅烷偶联剂对ZnO薄膜进行改性以研究不同改性过程对ZnO薄膜光学及亲水性能的影响。利用接触角测试、扫描电镜、紫外可见光光度计、荧光光谱仪等方法研究了改性后的纳米氧化锌薄膜的微结构、光学性能及亲水疏水性等。结果表明,采用不同的改性剂或不同的改性剂并用体系可以使氧化锌薄膜表面的施主缺陷浓度不同,从而导致氧化锌薄膜的光学性能及表面亲水疏水性随改性过程的不同而呈现一定的变化规律。更多还原

【Abstract】 The surfaces of ZnO coatings,synthesized in sol-gel method on glass substrate,were modified via chemical route. The impact of the modification conditions,including but not limited to the type and concentration of solutions( sodium laurate and KH560),dipping sequence and temperature,on the microstructures and hydrophilicity of the ZnO coatings was investigated. The Zn O coatings,before and after surface modification,were characterized with scanning electron microscopy,ultra violet visible spectroscopy,photoluminescence spectroscopy and conventional surface probes. The results showthat depending on the type and dipping sequence into the solutions,the surface modification significantly increased the water contact-angle of the Zn O coatings and changed its optical properties,accompanied by an increased surface density of Zn-defect. For example,dipping first into KH560 then into sodium laurate resulted in the narrowest optical band-gap. Possible mechanisms responsible for its modified properties were tentatively discussed in a though-provoking way.更多还原