Polymer/Polymer Blend Solar Cells with 2.0% Efficiency Developed by Thermal Purification of Nanoscale-Phase-Separated Morphology

被引：92

作者：

Mori, Daisuke ^{[1
]}

Benten, Hiroaki ^{[1
]}

Kosaka, Junya ^{[1
]}

Ohkita, Hideo ^{[1
,2
]}

Ito, Shinzaburo ^{[1
]}

Miyake, Kunihito ^{[3
]}

机构：

[1] Kyoto Univ, Grad Sch Engn, Dept Polymer Chem, Nishikyo Ku, Kyoto 6158510, Japan

[2] Japan Sci & Technol Agcy JST, PRESTO, Kawaguchi, Saitama 3320012, Japan

[3] Sumitomo Chem Co Ltd, Tsukuba Res Lab, Tsukuba, Ibaraki 3003294, Japan

来源：

ACS APPLIED MATERIALS & INTERFACES | 2011年 / 3卷 / 08期

关键词：

polymer photovoltaics; conjugated polymer blends; phase separation; morphology; poly(3-hexylthiophene); fluorene-based copolymer; CONJUGATED-POLYMER BLENDS; PHOTOVOLTAIC PERFORMANCE; POLYFLUORENE BLENDS; CHARGE GENERATION; EVOLUTION; DEVICES;

D O I：

10.1021/am200624s

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

We have fabricated polymer/polymer blend solar cells consisting of poly-(3-hexylthiophene) as the electron donor and poly{2,7-(9,9-didodecylfluorene)-alt-5,5-[4',7'-bis(2-thienyl)-2',1',3'-benzothiadiazole]} as the acceptor. The power conversion efficiency (PCE) was strongly dependent on solvents employed for spin coating. The best PCE of 2.0% was obtained for thermally annealed devices prepared from a chloroform solution, in contrast to devices fabricated from chlorobenzene and o-dichlorobenzene solutions. On the basis of the morphology-performance relationship in the polymer blends examined by atomic force microscopy and the photoluminescence quenching measurements, we conclude that the highly efficient performance is achieved by thermal purification of nanoscale-phase-separated domains formed by spin coating from chloroform.

引用

页码：2924 / 2927

页数：4

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