物理化学学报Issue(1)：82-88,7.DOI:10.3866/PKU.WHXB201211071
简易模板剂法制备多级介孔TiO2微球及其在染料敏化太阳能电池中的性能
A Simple Template Synthesis of Hierarchically Mesoporous TiO2 Microsphere for Dye-Sensitized Solar Cells
摘要
Abstract
Mesoporous TiO2 microspheres were synthesized using a simple template method. The effect of the alkyl chain length on the synthesis and properties of the TiO2 microspheres was studied. A high power conversion efficiency (9.5%-10.1%) was attained by the dye-sensitized solar cel s (DSCs) fabricated with the hierarchical y mesoporous TiO2 microsphere films. The physical properties of the TiO2 microspheres were analyzed by X-ray diffraction (XRD), N2 physisorption (BET), and scanning electron microscopy (SEM). The results indicated the TiO2 microsphere crystal structure to be in the pure anatase phase; the rough surface microstructure of the TiO2 microspheres, formed through accumulation of nanocrystal ine (14-18 nm diameter) TiO2 particles, provides a proper large surface area and mesoporous structure. The hierarchical y mesoporous TiO2 microspheres can form good paths for mass transport, and also act as light scattering layers for efficient light harvesting. Meanwhile, the rough TiO2 microsphere surface ensures a sufficient amount of dye uptake, and consequently improves the photo-generated electron density. Electrochemical impedance analysis demonstrated the advantage of using microspheres for mass transport in electrolytes.关键词
染料敏化太阳能电池/光阳极/TiO2球体/纳米结构/光电转换Key words
Dye-sensitized solar cel/Photoanode/TiO2 sphere/Nanostructure/Photoelectric conversion分类
化学化工引用本文复制引用
郭薇,王开,沈艺花,张贺,翁韬,马廷丽..简易模板剂法制备多级介孔TiO2微球及其在染料敏化太阳能电池中的性能[J].物理化学学报,2013,(1):82-88,7.基金项目
国家自然科学基金(51273032)资助项目 （51273032）
