Mixed C60/C70 based fullerene acceptors in polymer bulk-heterojunction solar cells

被引:18
作者
Andersson, L. Mattias [1 ]
Hsu, Yu-Te [1 ]
Vandewal, Koen [1 ]
Sieval, Alexander B. [2 ]
Andersson, Mats R. [3 ]
Inganas, Olle [1 ]
机构
[1] Linkoping Univ, Dept Phys Chem & Biol, S-58183 Linkoping, Sweden
[2] Solenne BV, NL-9747 AN Groningen, Netherlands
[3] Chalmers Univ Technol, Dept Chem & Biol Engn, S-41296 Gothenburg, Sweden
关键词
Bulk-heterojunction solar cell; Fullerene; Polymer; CHARGE-TRANSFER STATES; BLENDS; DISSOCIATION;
D O I
10.1016/j.orgel.2012.08.028
中图分类号
T [工业技术];
学科分类号
08 ;
摘要
Different mixtures of identically substituted C60 and C70 based fullerens have been used as acceptors in three polymer: fullerene systems that strongly express various performance limiting aspects of bulk heterojunction solar cells. Results are correlated with, and discussed in terms of e.g. morphology, charge separation, and charge transport. In these systems, there appears to be no relevant differences in either mobility or energy level positions between the identically substituted C60 and C70 based fullerenes tested. Examples of how fullerene mixtures influence the nano-morphology of the active layer are given. An upper limit to the open circuit voltage that can be obtained with fullerenes is also suggested. (C) 2012 Elsevier B.V. All rights reserved.
引用
收藏
页码:2856 / 2864
页数:9
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