苯基磷酸联吡啶钌络合物敏化纳晶多孔TiO_2薄膜电极光电性能研究

PHOTOELECTRICAL PERFORMANCE STUDY OF NANOCRYSTALLING TiO-2 FILM SENSITIZED BY PHENYLPHOSPHONATED POLYPYRIDYL RUTHENIUM COMPLEX

苯基磷酸联吡啶钌络合物敏化纳晶多孔ＴｉＯ２薄膜电极光电性能研究＊杨蓉王维波敬炳文肖绪瑞＊＊张曼华沈涛（中国科学院感光化学研究所，北京１００１０１）关键词联吡啶钌，ＴｉＯ２薄膜，染料敏化用有机光敏染料敏化半导体，通过染料分子的吸附功能基团与半导体相互作...

hiocyanato (4,4-dimethy1-2,2-bipyridyl)(4-phenylphosphonateterpyridyl) ruthenium(Ⅱ) was prepared and characterized with respect to its absorption, luminecence, and emission lifetime. The new dye with phosphonate absorption group can act as efficient chargetransfer sensitizer for nanocrystalline TiO_2 film illustrated by the high quantum yield of charge injection from the excited dye to the conduction band of TiO_2. Nanocrystalline TiO_2 film coated with monolayer of the prepared dye harvests visible light efficiently with the maximum LHE of 89.5% at 503 nm, And thus fabricated sensitized TiO_2 solar cell have a lighttoelectric energy conversion efficiency of 3.1%, with 0.66V opencircuit photovoltage and 4.4 mA/cm2 shortcircuit photocurrent. Study on the photocurrent action spectrum of the new dye sensitized TiO_2 film shows that the absorption group of the sensitizer has a strong influence on the photoelectrical performance of the film electrode.