New quinoxaline and pyridopyrazine-based polymers for solution-processable photovoltaics

被引：77

作者：

Kroon, Renee ^{[2
]}

Gehlhaar, Robert ^{[1
]}

Steckler, Timothy T. ^{[2
]}

Henriksson, Patrik ^{[2
]}

Muller, Christian ^{[2
]}

Bergqvist, Jonas ^{[3
]}

Hadipour, Afshin ^{[1
]}

Heremans, Paul ^{[1
]}

Andersson, Mats R. ^{[2
]}

机构：

[1] IMEC VZW, OPV Grp, B-3001 Louvain, Belgium

[2] Chalmers Univ Technol, SE-41296 Gothenburg, Sweden

[3] Linkoping Univ, IFM, SE-58183 Linkoping, Sweden

来源：

SOLAR ENERGY MATERIALS AND SOLAR CELLS | 2012年 / 105卷

关键词：

Conjugated polymers; Organic electronics; Photovoltaic devices; Polymeric materials; Solar cells; CHARGE-TRANSFER STATES; OPEN-CIRCUIT VOLTAGE; SOLAR-CELLS; BANDGAP POLYMERS; MOLECULAR-WEIGHT; FULLERENE; PERFORMANCE; PHOTOGENERATION; TRANSITION; FLUORINE;

D O I：

10.1016/j.solmat.2012.06.029

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：

The recently published quinoxaline/thiophene-based polymer TQ1 has been modified on its acceptor unit, either altering the acceptor strength by incorporating a pyridopyrazine, substitution of the acceptor-hydrogens by fluorine, or substitution of the alkoxy side chain by alkyl. The changes in physical, electronic and device properties are discussed. For the polymers incorporating the stronger acceptors a decreased performance is found, where in both cases the current in the devices is compromised. Incorporation of the pyridopyrazine-based acceptor seems to result in more severe or additional loss mechanisms compared to the polymer that incorporates the fluorine atoms. A similar performing material is obtained when changing the alkoxy side chain in TQ1 to an alkyl, where the solar cell performance is mainly improved on the fill factor. It is demonstrated that the standard TQ1 structure is easily modified in a number of ways, showing the versatility and robustness of the standard TQ1 structure and synthesis. (c) 2012 Elsevier B.V. All rights reserved.

引用

页码：280 / 286

页数：7

共 41 条

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