Homogeneous phase separation in polymer:fullerene bulk heterojunction organic solar cells
Xu, WL; Wu, B; Zheng, F; Wang, HB; Wang, YZ; Bian, FG; Hao, XT; Zhu, FR; Hao, XT (reprint author), Shandong Univ, Sch Phys, Jinan 250100, Shandong, Peoples R China.
2015
发表期刊ORGANIC ELECTRONICS
ISSN1878-5530
页码274—
文章类型期刊文献
摘要Phase separation in donor/acceptor bulk heterojunction (BHJ) significantly affects the exciton dissociation and charge collection in organic solar cells (OSCs). In this work, the dynamics of phase separation in poly[[4,8-bis[(2-ethylhexyl)oxy] benzo[1,2-b:4,5-b'] dithiophene-2,6-diyl] [3-fluoro-2-[(2-ethylhexyl) carbonyl] thieno [3,4-b] thiophenediyl]] (PTB7):[6,6]-phenyl C71 butyric acid methyl ester (PC70BM) based BHJ is analyzed. Solvent additive diiodooctane selectively dissolves PC70BM aggregation to form homogeneous distribution in PTB7 matrix. Quantitative analyses show that the size of PC70BM domains decreases from 67 nm to 38 nm with the addition of solvent additive. The vertical phase separation in PTB7:PC70BM BHJ was studied by the X-ray photoelectron spectroscopy measurement and its effect on the performance of the regular and inverted OSCs was examined. Compare to the vertical phase separation occurred in the poly(3-hexylthiophene):PCBM system, the homogeneous vertical phase separation observed in the PTB7:PC70BM BHJ favors an enhanced exciton dissociation process for attaining high performing OSCs. (C) 2015 Elsevier B.V. All rights reserved.
关键词Power-conversion Efficiency Open-circuit Voltage Photovoltaic Cells Self-organization Fill Factor Thin-films Polymer Poly(3-hexylthiophene) Morphology Blends
语种英语
文献类型期刊论文
条目标识符http://ir.sinap.ac.cn/handle/331007/24946
专题中科院上海应用物理研究所2011-2018年
通讯作者Hao, XT (reprint author), Shandong Univ, Sch Phys, Jinan 250100, Shandong, Peoples R China.
推荐引用方式
GB/T 7714
Xu, WL,Wu, B,Zheng, F,et al. Homogeneous phase separation in polymer:fullerene bulk heterojunction organic solar cells[J]. ORGANIC ELECTRONICS,2015:274—.
APA Xu, WL.,Wu, B.,Zheng, F.,Wang, HB.,Wang, YZ.,...&Hao, XT .(2015).Homogeneous phase separation in polymer:fullerene bulk heterojunction organic solar cells.ORGANIC ELECTRONICS,274—.
MLA Xu, WL,et al."Homogeneous phase separation in polymer:fullerene bulk heterojunction organic solar cells".ORGANIC ELECTRONICS (2015):274—.
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