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Methyl Thioether Functionalization of a Polymeric Donor for Efficient Solar Cells Processed from Non-Halogenated Solvents
Chemistry of Materials ( IF 7.2 ) Pub Date : 2019-03-29 00:00:00 , DOI: 10.1021/acs.chemmater.9b00926
Chun-Hui Zhang , Wei Wang , Wei Huang , Jiang Wang 1 , Zhubin Hu 2 , Zhichao Lin , Tingbin Yang , Fengyuan Lin , Yun Xing , Junxian Bai , Haitao Sun 2, 3 , Yongye Liang
Chemistry of Materials ( IF 7.2 ) Pub Date : 2019-03-29 00:00:00 , DOI: 10.1021/acs.chemmater.9b00926
Chun-Hui Zhang , Wei Wang , Wei Huang , Jiang Wang 1 , Zhubin Hu 2 , Zhichao Lin , Tingbin Yang , Fengyuan Lin , Yun Xing , Junxian Bai , Haitao Sun 2, 3 , Yongye Liang
Affiliation
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Polymer solar cells (PSCs) processed from non-halogenated solvents are favorable for large scale production. However, the photovoltaic performance of devices from non-halogenated solvents is generally inferior to that of the counterparts from halogenated solvents. Herein, we report the utilization of 5-alkyl-4-(methylthio)thiophene (MTT) as a conjugated side chain of the polymeric donor to achieve efficient PSCs processed from toluene. The derived polymer PMTT56 exhibits lower energy levels than the 5-alkyl-4-methoxythiophene (MOT) counterpart (PMOT39) and 5-(alkylthio)thiophene counterpart (PEHTT). PMTT56 is superior to PMOT39 with an enhanced interchain interaction and hole mobility, and also shows better solubility than PEHTT in toluene. In toluene-processed PSCs, the PMTT56 devices deliver a power conversion efficiency (PCE) of up to 12.6% with IT-2F as the acceptor. By introducing [6,6]-phenyl C71-butyric acid methyl ester (PC71BM) as the second acceptor, a remarkable PCE of 13.2% is further achieved in the ternary devices, which is among the best for PSCs processed from toluene. Our study presents a fine-tuning approach to develop efficient organic photovoltaic materials processed from non-halogenated solvents.
中文翻译:
由非卤代溶剂加工的高效太阳能电池的聚合物供体的甲基硫醚官能化
由非卤代溶剂加工而成的聚合物太阳能电池(PSC)有利于大规模生产。但是,由非卤代溶剂制成的器件的光电性能通常不如由卤代溶剂制成的器件的光电性能低。在这里,我们报道了利用5-烷基-4-(甲硫基)噻吩(MTT)作为聚合物供体的共轭侧链,以实现由甲苯加工得到的有效PSC。衍生的聚合物PMTT56的能级比5-烷基-4-甲氧基噻吩(MOT)对应物(PMOT39)和5-(烷硫基)噻吩对应物(PEHTT)低。PMTT56优于PMOT39,具有增强的链间相互作用和空穴迁移性,并且在甲苯中的溶解度比PEHTT好。在甲苯处理的PSC中,PMTT56器件可提供高达12的功率转换效率(PCE)。以IT-2F为接受者的6%。通过引入[6,6]-苯基C71-丁酸甲酯(PC 71 BM)作为第二受体,在三元装置中进一步实现了13.2%的显着PCE,这对于用甲苯加工的PSC来说是最好的。我们的研究提出了一种微调方法,以开发由非卤代溶剂加工而成的高效有机光伏材料。
更新日期:2019-03-29
中文翻译:
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由非卤代溶剂加工的高效太阳能电池的聚合物供体的甲基硫醚官能化
由非卤代溶剂加工而成的聚合物太阳能电池(PSC)有利于大规模生产。但是,由非卤代溶剂制成的器件的光电性能通常不如由卤代溶剂制成的器件的光电性能低。在这里,我们报道了利用5-烷基-4-(甲硫基)噻吩(MTT)作为聚合物供体的共轭侧链,以实现由甲苯加工得到的有效PSC。衍生的聚合物PMTT56的能级比5-烷基-4-甲氧基噻吩(MOT)对应物(PMOT39)和5-(烷硫基)噻吩对应物(PEHTT)低。PMTT56优于PMOT39,具有增强的链间相互作用和空穴迁移性,并且在甲苯中的溶解度比PEHTT好。在甲苯处理的PSC中,PMTT56器件可提供高达12的功率转换效率(PCE)。以IT-2F为接受者的6%。通过引入[6,6]-苯基C71-丁酸甲酯(PC 71 BM)作为第二受体,在三元装置中进一步实现了13.2%的显着PCE,这对于用甲苯加工的PSC来说是最好的。我们的研究提出了一种微调方法,以开发由非卤代溶剂加工而成的高效有机光伏材料。