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中文摘要：
首先选用聚乙二醇（PEG）对水热法合成的粒径约200nm 的ZnO 球进行表面钝化,考察了PEG分子量、用量对ZnO 薄膜形貌及光学性能的影响和PEG的能级结构;然后采用聚3-己基噻吩（P3HT）和最优参数PEG 修饰前、后的ZnO 纳米球共混旋涂来制备P3HT/ZnO 复合膜,利用原子力显微镜、紫外G可见分光光度计、荧光光谱分析仪考察PEG 钝化修饰对复合膜形貌及光学性能的影响.结果表明,采用相对分子质量为6000、用量为5%（质量分数）的PEG修饰ZnO 时,制备的ZnO 薄膜均一性最好;PEG 修饰的ZnO 与P3HT具有良好的能级匹配性;P3HT与PEG修饰后的ZnO 形成的复合膜表面规整且缺陷较少,而且在可见光区的光吸收作用增强,荧光猝灭现象加剧,表明PEG修饰增加了ZnO 和P3HT 的接触面积,促进了界面间的电荷转移.
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