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Rubrene-based interfacial engineering toward enhanced performance in inverted polymer solar cells
Organic Electronics ( IF 2.7 ) Pub Date : 2017-08-02 , DOI: 10.1016/j.orgel.2017.07.042
Zhongqiang Wang , Takeshi Sano , Taojun Zhuang , Xiao-Feng Wang , Hisahiro Sasabe , Junji Kido

Rubrene, an organic semiconductor having stable fused-ring molecular structure was used as a double interfacial layer in inverted organic solar cells. When a thin, 3 nm-thick layer of rubrene was introduced between a MoO3-based hole-collecting layer and a bulk-heterojunction (BHJ) photo-active layer consisting of poly{4,8-bis[(2-ethylhexyl)oxy]benzo[1,2-b:4,5-b']dithiophene-2,6-diyl-alt-3-fluoro-2-[(2-ethylhexyl)carbonyl]thieno[3,4-b]thiophene-4,6-diyl} (PTB7) and [6,6]-phenyl C71-butyric acid methyl ester (PC71BM), the power conversion efficiency was improved over 12% (from 7.2% to 8.1%). It was demonstrated that the insertion of thin rubrene layer showed suppressed exciton quenching and improved exciton dissociation, resulting in more efficient charge carrier collection and weaker charge recombination, thus improving the device performance.



中文翻译:

基于Rubrene的界面工程,旨在提高反向聚合物太阳能电池的性能

在倒置的有机太阳能电池中,具有稳定的稠环分子结构的有机半导体橡胶被用作双层界面层。在基于MoO 3的空穴收集层和由聚{4,8-双[[2-乙基己基)氧]苯并[1,2-b:4,5-b']二噻吩-2,6-二基-alt-3-氟-2-[(2-乙基己基)羰基]噻吩并[3,4- b ]噻吩-4,6-二基}(PTB7)和[6,6]-苯基C 71-丁酸甲酯(PC 71BM),电源转换效率提高了12%以上(从7.2%提高到8.1%)。结果表明,插入薄的红荧烯层显示出抑制的激子猝灭和改善的激子离解,从而导致更有效的电荷载流子收集和较弱的电荷复合,从而改善了器件性能。

更新日期:2017-08-02
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