Thiophene-fused carbazole derivative dyes for high-performance dye-sensitized solar cells

被引：9

作者：

An, Jincheng ^{[1
]}

Yang, Xichuan ^{[1
]}

Tian, Zhifeng ^{[1
]}

Cai, Bin ^{[1
]}

Zhang, Li ^{[1
]}

Yu, Ze ^{[1
]}

Wang, Xiuna ^{[1
]}

Hagfeldt, Anders ^{[2
]}

Sun, Licheng ^{[1
,3
]}

机构：

[1] Dalian Univ Technol DUT, DUT KTH Joint Educ & Res Ctr Mol Devices, Inst Artificial Photosynth, State Key Lab Fine Chem, Dalian 116024, Peoples R China

[2] Ecole Polytech Fed Lausanne, Lab Photomol Sci, Inst Chem Sci & Engn, CH-1015 Lausanne, Switzerland

[3] KTH Royal Inst Technol, Sch Chem Sci & Engn, Dept Chem, S-10044 Stockholm, Sweden

来源：

TETRAHEDRON | 2021年 / 88卷

基金：

中国国家自然科学基金; 瑞士国家科学基金会;

关键词：

Novel carbazole derivative donor; Dye-sensitized solar cell; Efficient photovoltaics; D-pi-A-structured organic sensitizers; Cobalt electrolyte; LOW RECOMBINATION RATE; ORGANIC-DYE; PORPHYRIN; EFFICIENCY; DONOR; CHAIN; FILM;

D O I：

10.1016/j.tet.2021.132124

中图分类号：

O62 [有机化学];

学科分类号：

070303 ; 081704 ;

摘要：

Two novel dyes that are similar in chemical structure, except for different donor units, AJ301and AJ303 were synthesized, characterized and applied as sensitizers in dye-sensitized solar cells (DSSCs). Both dyes exhibited a wide absorption of visible sunlight. The introduction of fused rings on the donor unit of AJ303 presented an appropriate energy level, less recombination and longer electron lifetime to achieve a power conversion efficiency (PCE) of 10.2%, far above that achieved for AJ301 of 6.2% with a [Co(bpy)(3)](2+/3+)-based electrolyte under standard AM1.5G solar irradiation (100 mW cm(-2)). The DSSCs based on AJ303 and AJ301 with [Cu(tmby)(2)](2+/+)-based electrolyte showed a lower PCE of 8.2% and 5.4%, respectively. Therefore, the results indicated that the introduction of a fused-ring in the donor group is a meaningful synthetic strategy to improve the photovoltaic performance. (C) 2021 Elsevier Ltd. All rights reserved.

引用

页数：8

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