Novel carbazole based sensitizers for efficient dye-sensitized solar cells: Role of the hexyl chain
Novel carbazole based sensitizers for efficient dye-sensitized solar cells: Role of the hexyl chain
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用于高效染料敏化太阳能电池的新型咔唑基敏化剂：己基链的作用
DOI：
10.1016/j.dyepig.2014.10.022
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发表时间：
2015-03-01
影响因子：
4.5
通讯作者：
Su, Cheng-Yong
中科院分区：
文献类型：
--
作者：
Huang, Jian-Feng;Liu, Jun-Min;Su, Cheng-Yong
以3，6-双（噻吩或己基噻吩）-二取代咔唑为电子给体，联噻吩或其衍生物为π共轭桥，氰基丙烯酸为电子受体，设计合成了4种新型D-D-pi-A型有机染料（DWH 1 ~ DWH 4）.光伏性能数据表明，J（sc）和V-oc值的调谐可以方便地通过将长烷基链引入敏化剂中来实现，这不仅提高了吸收的摩尔消光系数，提高了溶解度，而且通过导致电荷的有效空间分离来增加电子寿命。(C)2014爱思唯尔有限公司版权所有。
Four novel D-D-pi-A type organic dyes (DWH1-DWH4) were designed and synthesized, in which 3,6-bis(thiophene or hexylthiophene)-disubstituted carbazole moieties were used as the electron donor, bithiophene units or their derivatives as the pi-conjugated bridge, and a cyanoacrylic acid group as the electron acceptor. The photovoltaic performance data indicate that the tuning of the J(sc) and V-oc values can be conveniently accomplished by incorporation of long alkyl chains into sensitizer, which not only improves the molar extinction coefficients of the absorption and enhances the solubility but also increases the electron lifetime by leading to an effective spatial separation of the charges. (C) 2014 Elsevier Ltd. All rights reserved.