Dye-Sensitized Solar Cells Based on a Novel Fluorescent Dye with a Pyridine Ring and a Pyridinium Dye with the Pyridinium Ring Forming Strong Interactions with Nanocrystalline TiO2 Films
作者:Yousuke Ooyama、Shogo Inoue、Risa Asada、Genta Ito、Kohei Kushimoto、Kenji Komaguchi、Ichiro Imae、Yutaka Harima
DOI:10.1002/ejoc.200900983
日期:2010.1
new-type donor-acceptor π-conjugated dyes capable of forming a strong interaction between the electron-acceptor moiety of the sensitizers and a TiO 2 surface, fluorescent dye OH11 and pyridinum dye OH12 with a pyridine and pyridinium ring as the electron-accepting group, respectively, have been designed and synthesized as photosensitizers for use in dye-sensitized solar cells (DSSCs). The fluorescent dye
作为能够在敏化剂的电子受体部分与 TiO 2 表面形成强相互作用的新型供体-受体 π 共轭染料,荧光染料 OH11 和吡啶染料 OH12 以吡啶和吡啶环作为电子接受分别设计和合成了用于染料敏化太阳能电池 (DSSC) 的光敏剂。荧光染料 OH11 在 410 nm 附近显示吸收带,在 530 nm 附近显示荧光带。另一方面,吡啶染料 OH12 在 560 nm 附近显示出最大吸收,这归因于从二丁基氨基到吡啶环的强烈分子内电荷转移激发。使用OH11和OH12制备的DSSCs的短路光电流密度分别为4.33和1.74 mA cm -2 ,在模拟太阳光[AM (air mass) 1.5, 100 mW cm -2 ]下,太阳能到电能的转化率分别为1.33%和0.51%。OH11 (525 mV) 的开路光电压高于 OH12 (444 mV)。在半经验分子轨道计算(AM1和INDO/S)、光谱分析和循环伏安法的基础上讨论了染料在TiO