物理化学学报2012，Vol.28Issue(3)：591-595,5.DOI:10.3866/PKU.WHXB201112161
基于铝离子掺杂二氧化钛薄膜的染料敏化太阳能电池的光电性能
Photovoltaic Performance of Dye-Sensitized Solar Cells Based on Al-Doped TiO2 Thin Films
摘要
Abstract
Al-doped TiO2 thin films were synthesized by the hydrothermal method.To prepare a working electrode,a TiO2 or AlTiO2 slurry was coated onto a fiuorine-doped tin oxide glass substrate by the doctor blade method and the coated substrate was sintered at 450℃.TiO2 and Al-doped TiO2 films were characterized by X-ray photoelectron spectroscopy (XPS),X-ray diffraction (XRD),scanning electron microscopy (SEM),and tested by the dye-sensitized solar cell (DSSCs) system.The influences of Al-doping on TiO2 crystal form and the photovoltaic performance of DSSCs were investigated.X-ray photoelectron spectroscopy (XPS) data indicate that the doped Al ions exist in the form of Al3+,and these ions play a role as e- or h+ traps and reduce the e-/h* pair recombination rate.The corresponding MottSchottky plot indicates that the Al-doped TiO2 photoanode shifts the fiat band potential positively.The positive shift of the fiat band potential improves the driving force of injected electrons from the LUMO of the dye to the conduction band of TiO2.The Al-doped TiO2 thin film shows a photovoltaic efficiency of 6.48％,which is higher than that of the undoped TiO2 thin film (5.58％) and the short-circuit photocurrent density increases from 16.5 to 18.2 mA·cm-2.关键词
二氧化钛/铝掺杂薄膜/水热法/X射线光电子能谱/光电性能/平带电位Key words
Titanium dioxide/Al-doped film/Hydrothermal method/X-ray photoelectron spectroscopy/Photovoltaic performance/Flat band potential分类
化学化工引用本文复制引用
刘秋平,黄慧娟,周洋,段彦栋,孙庆文,林原..基于铝离子掺杂二氧化钛薄膜的染料敏化太阳能电池的光电性能[J].物理化学学报,2012,28(3):591-595,5.基金项目
The project was supported by the National Key Basic Research Program of China (973) (2006CB202605),National High-Tech Research and Development Program of China (863) (2007AA05Z439),and National Natural Science Foundation of China (20973183).国家重点基础研究发展规划项日(973) (2006CB202605),国家高技术研究发展计划项日(863) (2007AA052439)及国家自然科学基金项目(20973183)资助 （973）
