Tuning of the Photovoltaic Parameters of Molecular Donors by Covalent Bridging

被引：42

作者：

Demeter, Dora ^{[1
]}

Jeux, Victorien ^{[1
]}

Leriche, Philippe ^{[1
]}

Blanchard, Philippe ^{[1
]}

Olivier, Yoann ^{[2
]}

Cornil, Jerome ^{[2
]}

Po, Riccardo ^{[3
]}

Roncali, Jean ^{[1
]}

机构：

[1] Univ Angers, Grp Linear Conjugated Syst, MOLTECH Anjou, CNRS,UMR 6200, F-49045 Angers, France

[2] Univ Mons, Lab Chem Novel Mat, B-7000 Mons, Belgium

[3] ENI SpA, Ist ENI Donegani, Ctr Ric Energie Non Convenzionali, I-28100 Novara, Italy

来源：

ADVANCED FUNCTIONAL MATERIALS | 2013年 / 23卷 / 38期

关键词：

organic solar cells; molecular donors; conjugated systems; rigidification; INTERNAL CHARGE-TRANSFER; ORGANIC SOLAR-CELLS; CONJUGATED SYSTEMS; DESIGN; SEMICONDUCTORS; CHROMOPHORES; VOLTAGE; DYES;

D O I：

10.1002/adfm.201300427

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

The synthesis of donor-acceptor molecules involving triarylamines and dicyanovinyl blocks is described. Optical and electrochemical results show that rigidification of the acceptor part of the molecule by a covalent bridge leads to a ca. 0.20 eV increase of the band gap due to a parallel increase of the lowest unoccupied molecular orbital level. A preliminary evaluation of these compounds as donor materials in organic solar cells shows that although this structural modification reduces the light-harvesting properties of the donor molecule, it nevertheless induces an increase of the efficiency of the resulting solar cells due to a simultaneous improvement of the open-circuit voltage and fill factor.

引用

页码：4854 / 4861

页数：8

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