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Nanostructures of chemically modified multi-walled carbon nanotubes and poly(3-hexylthiophene) to improve photophysic/photovoltaic features
Carbon Letters ( IF 5.5 ) Pub Date : 2020-06-08 , DOI: 10.1007/s42823-020-00155-9
Afsaneh Hadi , Mohammad Hossein Hekmatshoar , Farhang Abbasi , Samira Agbolaghi

Multi-walled carbon nanotube/poly(3-hexylthiophene) (CNT/P3HT) and CNT-graft-poly(3-dodecylthiophene) (PDDT)/P3HT nanohybrids were applied in active layers to study the effects of these nanostructures on the polymer solar cell (PSC) performance. The charge-carrier dynamics and photophysics were studied in the binary and ternary systems based on P3HT, pre-developed nanostructures and/or phenyl-C71-butyric acid methyl ester (PC71BM) through the electrochemical impedance spectroscopy and morphological analyses. The weaker bimolecular recombination in the photoactive layer, consisting of CNT-graft-PDDT/P3HT nanostructures, was confirmed by short-circuit current (Jsc) and open-circuit voltage (Voc) measurements as a function of light intensity. PSC composed of P3HT:PC71BM:CNT-graft-PDDT/P3HT PSC exhibited the highest PCE of 4.18% with significantly increased Jsc and Voc.



中文翻译:

化学修饰的多壁碳纳米管和聚(3-己基噻吩)的纳米结构,可改善光物理/光伏特性

将多壁碳纳米管/聚(3-己基噻吩)(CNT / P3HT)和CNT-接枝-聚(3-十二烷基噻吩)(PDDT)/ P3HT纳米杂化物应用于活性层,以研究这些纳米结构对聚合物太阳能的影响电池(PSC)性能。通过电化学阻抗谱和形态分析,在基于P3HT,预开发的纳米结构和/或苯基-C71-丁酸甲酯(PC71BM)的二元和三元系统中研究了载流子动力学和光物理。由短路电流(J sc)和开路电压(V oc)证实,由CNT-接枝-PDDT / P3HT纳米结构组成的光敏层中较弱的双分子复合。)测量值与光强度的关系。由P3HT:PC71BM:CNT-graft-PDDT / P3HT组成的PSC的PCE最高,为4.18%,J scV oc显着增加。

更新日期:2020-06-08
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