Efficient triphenylamine-based dyes featuring dual-role carbazole, fluorene and spirobifluorene moieties
Efficient triphenylamine-based dyes featuring dual-role carbazole, fluorene and spirobifluorene moieties
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具有双作用咔唑、芴和螺二芴部分的高效三苯胺染料
DOI：
10.1016/j.orgel.2010.10.016
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发表时间：
2011
影响因子：
3.2
通讯作者：
Tan, Songting
中科院分区：
文献类型：
--
作者：
Shen, Ping;Tang, Yuhua;Jiang, Shenghui;Chen, Huajie;Zheng, Xiaoyan;Wang, Xueye;Zhao, Bin;Tan, Songting
合成了三种三苯胺基有机染料SD6、SD7和SD8，并将其应用于染料敏化太阳能电池(DSC)。详细研究了有机染料的双作用基团对其光物理、电化学和光伏性能的影响。这些染料在可见光区表现出很强的电荷转移吸收带。用循环伏安法估算了它们的氧化还原电位值，发现它们很好地适应了DSSC中的电荷流。在三苯胺和噻吩基之间插入双作用基团作为二次给体，增加了给体基团的电子密度，从而减小了HOMO-LUMO带隙。这些三苯胺类染料具有较高的消光系数和合适的氧化还原性能，结合了紫外-可见光(UV-Vis)宽吸收带的特点，使其成为具有广泛应用前景的染料。对于典型的基于染料SD6的太阳能电池器件，最大单色入射光子-电流转换效率可达∼73%，短路光电流密度为14.25 mA/cm~2，开路光电压为0.70V，填充因数为0.705，对应的功率转换效率为7.03%。
Three triphenylamine-based organic dyes SD6, SD7, and SD8 containing the bulky dual-role moieties (fluorene, carbazole, and spirobifluorene) in the molecular frameworks were synthesized, characterized and applied in dye-sensitized solar cells (DSSCs). The effects of dual-role moieties of organic dyes on their photophysical, electrochemical, and photovoltaic properties have been investigated in detail. These dyes exhibit strong charge transfer absorption bands in the visible region. Their redox potential levels were estimated by cyclic voltammetry and found to suit well to the charge flow in DSSCs. Inserting the dual-role moieties as the secondary donor between the triphenylamine and thiophene units increased the electron density of the donor groups, therefore reduced the HOMO–LUMO band gaps. The combination of ultraviolet–visible (UV–vis) region broad absorption bands with fairly high extinction coefficients and appropriate redox properties observed in these triphenylamine-based dyes make them promising dyes for DSSCs. For a typical solar cell device based on dye SD6, the maximal monochromatic incident photon-to-current conversion efficiency (IPCE) can reach to ∼73%, with a short-circuit photocurrent density (Jsc) of 14.25mA/cm2, an open-circuit photovoltage (Voc) of 0.70V, and a fill factor (FF) of 0.705, which corresponds to a power conversion efficiency (PCE) of 7.03%.
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影响因子：
2.1
作者：
Lu Zhang;Yong-kang Liu;Zhongyuan Wang;M. Liang;Zhe Sun;Song Xue
通讯作者：
Lu Zhang;Yong-kang Liu;Zhongyuan Wang;M. Liang;Zhe Sun;Song Xue
影响因子：
15
作者：
Roquet, S;Cravino, A;Roncali, J
通讯作者：
Roncali, J
影响因子：
2.1
作者：
Kim, Duckhyun;Lee, Jae Kwan;Ko, Jaejung
通讯作者：
Ko, Jaejung
影响因子：
3.6
作者：
Ning, Zhijun;Zhang, Qiong;Tian, He
通讯作者：
Tian, He
用于染料敏化太阳能电池的新型吲哚基无金属有机染料
影响因子：
3.3
作者：
Li, Qianqian;Lu, Lanlan;Li, Zhen
通讯作者：
Li, Zhen