Metal-free organic dyes with di(1-benzothieno)[3,2-b:2′,3′-d]pyrrole as a donor for efficient dye-sensitized solar cells: Effect of mono- and bi-anchors on photovoltaic performance

被引：25
作者：
Wu, Hanlun [1 ]
Huang, Zusheng [2 ]
Hua, Tao [1 ]
Liao, Chaoqiang [1 ]
Meier, Herbert [3 ]
Tang, Hao [1 ]
Wang, Lingyun [1 ]
Cao, Derong [1 ]
机构：
[1] South China Univ Technol, Sch Chem & Chem Engn, State Key Lab Luminescent Mat & Devices, Guangzhou 510641, Guangdong, Peoples R China
[2] Wenzhou Med Univ, Sch Pharmaceut Sci, Wenzhou 325035, Peoples R China
[3] Johannes Gutenberg Univ Mainz, Inst Organ Chem, Duesbergweg 10-14, D-55099 Mainz, Germany
来源：
DYES AND PIGMENTS | 2019年 / 165卷
基金：
中国国家自然科学基金;
关键词：
Metal-free organic dyes; Di(1-benzothieno)[3,2-b:2 ',3 '-d]pyrrole; Electron donor; Double anchors; Dye-sensitized solar cells; CHARGE RECOMBINATION; PORPHYRIN DYES; MOLECULAR DESIGN; CONJUGATED POLYMERS; PHENOTHIAZINE DYES; ELECTRON INJECTION; ACCEPTOR; REGENERATION; CHAINS;
D O I：
10.1016/j.dyepig.2019.02.003
中图分类号：
O69 [应用化学];
学科分类号：
081704 ;
摘要：
Four novel metal-free organic dyes WL1a-b and WL2a-b containing di(1-benzothieno)[3,2-b:2',3'-d]pyrrole (DBTP) as electron donor were synthesized and applied for dye-sensitized solar cells (DSSCs), where DBTP was firstly employed as a donor in the organic dyes. It has been demonstrated that the dyes WL with DBTP as a donor show better photovoltaic performance than the reference dye PTZ with phenothiazine as a donor. In comparison with WL1a-b with one cyanoacrylic acid as mono-anchor, WL2a-b with two cyanoacrylic acids as bi-anchors show a broader light absorption on the TiO2 film and higher molar extinction coefficients in solution, resulting in higher power conversion efficiency. Under standard global AM 1.5G solar light condition, WL2a sensitized solar cell obtained a high power conversion efficiency of 8%. The results indicate that the DBTP unit can be applied as an effective electron donor and DBTP-based organic dye is a promising candidate for efficient DSSCs.
引用
收藏
页码：103 / 111
页数：9
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