A survey of electron-deficient pentacenes as acceptors in polymer bulk heterojunction solar cells

被引：125

作者：

Shu, Ying ^{[2
]}

Lim, Yee-Fun ^{[1
]}

Li, Zhong ^{[2
]}

Purushothaman, Balaji ^{[2
]}

Hallani, Rawad ^{[2
]}

Kim, Jo Eun ^{[1
]}

Parkin, Sean R. ^{[2
]}

Malliaras, George G. ^{[1
]}

Anthony, John E. ^{[2
]}

机构：

[1] Cornell Univ, Dept Mat Sci & Engn, Ithaca, NY 14850 USA

[2] Univ Kentucky, Dept Chem, Lexington, KY 40506 USA

来源：

CHEMICAL SCIENCE | 2011年 / 2卷 / 02期

基金：

美国国家科学基金会;

关键词：

OPEN-CIRCUIT VOLTAGE; PHOTOVOLTAIC CELLS; PERFORMANCE; 2-VINYL-4,5-DICYANOIMIDAZOLES; MORPHOLOGY; EFFICIENCY; COPOLYMER; MOLECULE;

D O I：

10.1039/c0sc00433b

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

We have prepared, characterized and surveyed device performance for a series of electron deficient pentacenes for use as acceptors in polymer bulk heterojunction solar cells, using P3HT as the donor material. All of the materials reported here behaved as acceptors, and variations in the position and nature of the electron-withdrawing group on the pentacene core allowed tuning of device open-circuit voltage. Photocurrent was strongly correlated with the pentacene crystal packing motif; materials with 2D pi-stacking interactions performed poorly compared with materials exhibiting 1D pi-stacking interactions. The best pentacene acceptors gave repeatable device efficiency in excess of 1.2%, compared with 3.5% exhibited for PCBM-based devices.

引用

页码：363 / 368

页数：6

共 40 条

[11] Interface investigation and engineering - achieving high performance polymer photovoltaic devices [J].