Dye-Sensitized Solar Cells Based on a Donor-Acceptor System with a Pyridine Cation as an Electron-Withdrawing Anchoring Group
作者:Ming Cheng、Xichuan Yang、Jiajia Li、Cheng Chen、Jianghua Zhao、Yu Wang、Licheng Sun
DOI:10.1002/chem.201200826
日期:2012.12.7
New hemicyanine dyes (CM101, CM102, CM103, and CM104) in which tetrahydroquinoline derivatives are used as electron donors and N‐(carboxymethyl)‐pyridinium is used as an electron acceptor and anchoring group were designed and synthesized for dye‐sensitized solar cells (DSSCs). Compared with corresponding dyes that have cyanoacetic acid as the acceptor, N‐(carboxymethyl)‐pyridinium has a stronger electron‐withdrawing
新的半花菁染料(CM101,CM102,CM103和CM104)将四氢喹啉衍生物用作电子供体,将N-(羧甲基)-吡啶用作电子受体,并设计并合成了用于染料敏化太阳能电池的锚定基团( DSSC)。与相应的以氰基乙酸为受体的染料相比,N-(羧甲基)-吡啶具有更强的吸电子能力,这会使染料的最大吸收量发生红移。基于染料CM101 – CM104的DSSC的光伏性能在很大程度上取决于染料的分子结构。正己基链和甲氧基。在AM 1.5辐射(100 mW cm -2)下,被染料CM104敏化的器件实现了7.0%的最佳转换效率(J sc = 13.4 mA cm -2,V oc = 704 mV,FF = 74.8%)。相反,通过参考染料CMR104用相同的供体但氰基乙酸作为受体敏化的装置给出了3.4%的效率(J sc = 6.2 mA cm -2,V oc = 730 mV,FF = 74.8%)。在相同条