On the effect of poly(3-hexylthiophene) regioregularity on inkjet printed organic solar cells

被引：71

作者：

Hoth, Claudia N. ^{[1
,2
]}

Choulis, Stelios A. ^{[3
]}

Schilinsky, Pavel ^{[1
]}

Brabec, Christoph J. ^{[1
]}

机构：

[1] Konarka Technol GmbH, D-90443 Nurnberg, Germany

[2] Carl von Ossietzky Univ Oldenburg, Dept Energy & Semicond Res, D-26129 Oldenburg, Germany

[3] Cyprus Univ Technol, Dept Mech Engn & Mat Sci & Engn, CY-3603 Limassol, Cyprus

来源：

JOURNAL OF MATERIALS CHEMISTRY | 2009年 / 19卷 / 30期

关键词：

MOLECULAR-WEIGHT; POLYMER; FULLERENE; PERFORMANCE; MORPHOLOGY; BLENDS; POLYTHIOPHENE; ORGANIZATION; FABRICATION; GELATION;

D O I：

10.1039/b823495g

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

We investigate the impact of P3HT regioregularity on the performance of bulk heterojunction solar cells with inkjet printed P3HT: PCBM layers. Three polythiophenes with different regioregularities ranging from 93% up to 98% are inkjet printed from two different formulations at room temperature. It is found that the high RR-P3HT ( 98%) is not suitable for inkjet printing at room temperature. The fast formation of aggregates shortens the shelf life of the ink and thus, results in low reliability of the printing process, in the formation of inhomogeneous and very rough films with surface roughnesses up to 70 nm, and in a strongly reduced device performance. This phenomenon is not observed for solar cells processed via the doctor blading technique. Nevertheless, inkjet printing of 96% RR-P3HT: PCBM oDCB/mesitylene solutions at room temperature resulted in solar cells with 3.5% efficiency, while doctor blading of 98% RR-P3HT: PCBM oDCB/mesitylene solutions resulted in efficiencies as high as 4.4%.

引用

页码：5398 / 5404

页数：7

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