Phenylethyne-Bridged Dyes for Dye-Sensitized Solar Cells
Phenylethyne-Bridged Dyes for Dye-Sensitized Solar Cells
复制标题
DOI：
10.1021/jp8108573
复制
发表时间：
2009-07
影响因子：
3.7
通讯作者：
Jinsheng Song;Fan Zhang;Cuihong Li;Weili Liu;Binsong Li;Yong Huang;Zhishan Bo
中科院分区：
文献类型：
--
作者：
Jinsheng Song;Fan Zhang;Cuihong Li;Weili Liu;Binsong Li;Yong Huang;Zhishan Bo
在分子水平上设计并合成了用于染料敏化太阳能电池（DSSCs）的四种无金属有机染料（染料1、染料2、染料3和染料4），包括三苯胺片段作为电子供体，氰丙烯酸或羧酸片段作为电子受体和锚定基团，苯乙烯作为桥。在B3LYP/6-31G水平上，利用密度泛函理论计算了不同受体的电子分布。结果表明，在AM 1.5 （100 mW/cm2）辐照下，氰丙烯酸染料染料-4的总转化效率为3.61% (Jsc = 9.30 mA/cm2, Voc = 0.73 V, ff = 0.49)，与在相同条件下制备的n719染料染料的转化效率相比达到79%。同时，这些苯乙烯桥接染料的光伏性能数据显示，其开路电压(…
Four metal-free organic dyes (Dye-1, Dye-2, Dye-3, and Dye-4) comprising a triphenylamine moiety as the electron donor, a cyanoacrylic acid or carboxylic acid moiety as the electron acceptor and anchoring groups, and phenylethyne as the bridge were designed at the molecular level and synthesized for use in dye-sensitized solar cells (DSSCs). Their absorption spectra and electrochemical and photovoltaic properties were fully characterized, and the electron distribution with the different acceptors was calculated using density functional theory at the B3LYP/6-31G level. All of these dyes performed as sensitizers for the DSSC test, and the cyanoacrylic acid Dye-4 showed an overall conversion efficiency of 3.61% (Jsc = 9.30 mA/cm2, Voc = 0.73 V, ff = 0.49) under AM 1.5 irradiation (100 mW/cm2), which reached 79% with respect to that of an N719-based device fabricated under similar conditions. Meanwhile, the photovoltaic performance data of these phenylethyne-bridged dyes showed a higher open circuit voltage (...