Fluorescence and sensitization performance of phenylene-vinylene-substituted polythiophene

JinMao Chen, JianHui Hou, YongFang Li, XiaoWen Zhou, JingBo Zhang, XuePing Li, XuRui Xiao, Yuan Lin
2009 Science Bulletin  
A new kind of polythiophene derivative, Poly(3-{2-[4-(2-ethylhexyloxy)-phenyl]-vinyl}-2,2′-bithiophene) (PTh), was applied in dye-sensitized solar cell to extend the light response of nanocrystalline TiO 2 electrode. UV-vis absorption and fluorescence spectra were employed to investigate the interaction of PTh with nanocrystalline TiO 2 . The absorption coefficient of the PTh was high in visible part of spectrum, and the fluorescence emission of the PTh can be efficiently quenched by TiO 2
more » ... articles owing to charge injection from the excited singlet state of PTh to the conduction band of the TiO 2 particles. Cyclic voltammetry measurements were performed to study the dye regeneration reaction at the nanocrystalline TiO 2 /electrolyte interface. The solar cell sensitized with PTh exhibited a short-circuit photocurrent (I sc ) of 3.08 mA/cm 2 , an open circuit voltage (V oc ) of 511 mV and an overall efficiency of 0.9% under the illumination of 100 mW/cm 2 (AM 1.5). PHYSICAL CHEMISTRY polythiophene derivative, sensitize, solar cell, efficiency Citation: Chen J M, Hou J H, Li Y F, et al. Fluorescence and sensitization performance of phenylene-vinylene-substituted polythiophene.
doi:10.1007/s11434-009-0209-0 fatcat:oeeyq73qwjfivcdpqteuc3bzqq