文献类型：期刊文献

英文题名：Photovoltaic properties of three new cyanine dyes for dye-sensitized solar cells

作者：Wu, Wenjun[1,2];Hua, Jianli[1,2];Jin, Yinghua[1,2];Zhan, Wenhai[1,2];Tian, He[1,2]

机构：[1]E China Univ Sci & Technol, Key Lab Adv Mat, Shanghai 200237, Peoples R China;[2]E China Univ Sci & Technol, Inst Fine Chem, Shanghai 200237, Peoples R China

年份：2008

卷号：7

期号：1

起止页码：63

外文期刊名：PHOTOCHEMICAL & PHOTOBIOLOGICAL SCIENCES

收录：;WOS:【SCI-EXPANDED(收录号:WOS:000252048700008)】；

语种：英文

摘要：Three carboxylated cyanine dyes, 2-[(1-butyl-3,3-dimethyl-5-carboxylindoline-2-ylidene)propenyl]-[1-butyl-3,3-dimethyl-7-(1-ethyl-1H-1,2,3-triazole-4-yl]-1H-benz[e] indolium iodide (Cy1), 2-[(1-butyl-3, 3-dimethyl-5-carboxyl-indoline-2-ylidene) propenyl]-{1-butyl-3,3-dimethyl-7-[(4-piperidine-N-ethyl-1,8-naphthalimide)-1H-1,2,3-triazole-4-yl]}-1H-benz[e] indolium iodide (Cy2) and 2-[(1-butyl-3,3-dimethyl-5-carboxyl-indoline-2-ylidene) propenyl)-[1-butyl-3,3-dimethyl-7-{(4-piperidine-N-butyl-1,8-naphthalimide)-1H-1,2,3-triazole-4-yl}]-1H-benz[e] indolium iodide (Cy3), have been synthesized and characterized with regard to their structures and electrochemical properties. Upon adsorption onto a TiO2 electrode, the absorption spectra of the three cyanine dyes are all broadened to both red and blue sides compared with their respective spectra in an acetonitrile and ethanol mixture. Cy2 and Cy3, containing a naphthalimide group, have stronger absorption intensities and broader absorption spectra than Cy1, which consequently leads to better light-to-electricity conversion properties. Among the three cyanine dyes, Cy3 generated the highest photoelectric conversion yield of 4.80% (J(sc) = 14.5 mA cm(-2), V-infinity = 500 mV, FF = 0.49) under illumination with 75 mW cm(-2) white light from a Xe lamp.