采用水热合成技术,以盐酸、去离子水和钛酸丁酯为反应前驱物,在透明导电玻璃(FTO)衬底上合成TiO2纳米花薄膜.采用扫描电子显微镜(SEM)、高分辨透射电镜(HRTEM)和X射线衍射(XRD)对其形貌和结构进行了分析.结果表明在FTO衬底上形成的纳米花是由四方形柱状结构的纳米棒构成的,纳米棒由具有金红石晶型的直径为4~6 nm的几十条单晶纳米线束聚集在一起构成的.研究了以TiO2纳米花薄膜为光阳极制备的染料敏化太阳能电池的光电性能,电池的开路电压、短路电流密度和转换效率均随着反应前驱物中钛酸丁酯的浓度的增加而变小,这是由于纳米花的比表面积随着钛酸丁酯的浓度增加而减少造成的.
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