Comparative studies of new pyranylidene-based sensitizers bearing single or double anchoring groups for dye-sensitized solar cells

被引：20

作者：

Gauthier, Sebastien ^{[1
]}

Robin-Le Guen, Francoise ^{[1
]}

Wojcik, Laurianne ^{[2
]}

Le Poul, Nicolas ^{[2
]}

Planchat, Aurelien ^{[3
]}

Pellegrin, Yann ^{[3
]}

Level, Patricia Guevara ^{[3
]}

Szuwarski, Nadine ^{[3
]}

Boujtita, Mohammed ^{[3
]}

Jacquemin, Denis ^{[3
]}

Odobel, Fabrice ^{[3
]}

机构：

[1] Univ Rennes, ISCR Inst Sci Chim Rennes, CNRS, UMR 6226, F-35000 Rennes, France

[2] Univ Bretagne Occidentale, Lab Chim Electrochim Mol & Chim Analyt, UMR CNRS 6521, UFR Sci & Tech, 6 Ave Victor Le Gorgeu CS 93837, F-29238 Brest 3, France

[3] Univ Nantes, CNRS, CEISAM UMR 6230, F-44000 Nantes, France

来源：

SOLAR ENERGY | 2020年 / 205卷

关键词：

Dye-sensitized solar cells; gamma-pyranylidene; Substituent effect; Single and double; Anchoring dyes; Photovoltaic performance; TD-DFT calculations; D-PI-A; MOLAR EXTINCTION COEFFICIENT; PUSH-PULL CHROMOPHORES; FREE ORGANIC-DYES; HIGHLY-EFFICIENT; ENHANCED PERFORMANCE; CO-SENSITIZATION; PROPERTY; DONORS; PEROVSKITE;

D O I：

10.1016/j.solener.2020.05.036

中图分类号：

TE [石油、天然气工业]; TK [能源与动力工程];

学科分类号：

0807 ; 0820 ;

摘要：

Mono- and di-anchoring gamma-pyranylidene-based organic dyes featuring D-pi-A and D-(pi-A)(2) architectures have been engineered as sensitizers for applications in Dye-Sensitized Solar Cells (DSSCs). Their photophysical, electrochemical and photovoltaic properties were further investigated. TD-DFT calculations were performed to rationalize the trends observed in the optical and electrochemical properties of the dyes. The investigation of the photovoltaic performances of this series of new dyes provided structure-property relationships where their Power Conversion Efficiencies (PCE) could be correlated to structural features, such as the length of the pi-conjugated spacer, the nature of the substituents on the pyranylidene electron donor moiety and the number of anchoring groups. Dye-Sensitized Solar Cells based on mono-anchoring dyes were more efficient than the corresponding cells based on di-anchoring analogues due to high dye loading. The highest Power Conversion Efficiency of 5.23% was achieved with the mono-anchoring 17a dye containing t-butyl substituent groups on the pyranylidene fragment and with one thienyl pi-conjugated spacer.

引用

页码：310 / 319

页数：10

共 65 条

[51] A Combined Experimental and Computational Investigation of Anthracene Based Sensitizers for DSSC: Comparison of Cyanoacrylic and Malonic Acid Electron Withdrawing Groups Binding onto the TiO2 Anatase (101) Surface [J].