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首页> 外文期刊>Advanced Functional Materials >10.8% Efficiency Polymer Solar Cells Based on PTB7-Th and PC71BM via Binary Solvent Additives Treatment
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10.8% Efficiency Polymer Solar Cells Based on PTB7-Th and PC71BM via Binary Solvent Additives Treatment

机译：基于PTB7-Th和PC71BM的二元溶剂添加剂处理的10.8％效率聚合物太阳能电池

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摘要

In this work, polymer solar cells are fabricated based on the blend of PTB7-Th: PC 71 BM by using a mixed solvent additive of 1,8-diiodooctane and N-methyl pyrrolidone to optimize the morphology of the blend. A high power conversion efficiency (PCE) of 10.8% has been achieved with a simple conventional device. In order to deeply investigate the influence of the mixed solvent additives on the morphology and device performance, the variations of the molecular packing and bulk morphology of the blend film cast from ortho-dichlorobenzene with single or binary solvent additives are measured. Although all the blend films exhibit similar domain size and nanoscale phase separation, the blend film processed with mixed solvent additive shows the highest domain purity, resulting in the least bimolecular recombination, relatively high J(sc) and FF, and hence enhanced PCE. Therefore, the best photovoltaic performance with the V-oc of 0.82 V, J(sc) of 19.1 mA cm(-2), FF of 69.1%, and PCE of 10.8% are obtained for the device based on the blend with binary solvent additive treatment.
机译：在这项工作中，基于PTB7-Th：PC 71 BM的共混物，通过使用1,8-二碘辛烷和N-甲基吡咯烷酮的混合溶剂添加剂来优化共混物的形态，制造了聚合物太阳能电池。使用简单的常规设备已实现了10.8％的高功率转换效率（PCE）。为了深入研究混合溶剂添加剂对形态和器件性能的影响，测定了邻二氯苯与单一或二元溶剂添加剂流延共混膜的分子堆积和本体形态的变化。尽管所有共混膜都显示出相似的畴尺寸和纳米级相分离，但用混合溶剂添加剂处理的共混膜显示出最高的畴纯度，从而导致最少的双分子重组，相对较高的J（sc）和FF，从而增强了PCE。因此，基于与二元溶剂共混的器件，可获得最佳光伏性能，V-oc为0.82 V，J（sc）为19.1 mA cm（-2），FF为69.1％，PCE为10.8％。加法处理。

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  • 来源
    《Advanced Functional Materials》 |2016年第36期|6635-6640|共6页
  • 作者

    Wan Qun; Guo Xia; Wang Zaiyu; Li Wanbin; Guo Bing; Ma Wei; Zhang Maojie; Li Yongfang;

  • 作者单位

    Soochow Univ, Coll Chem Chem Engn & Mat Sci, Lab Adv Optoelect Mat, Suzhou 215123, Peoples R China;

    Soochow Univ, Coll Chem Chem Engn & Mat Sci, Lab Adv Optoelect Mat, Suzhou 215123, Peoples R China;

    Xi An Jiao Tong Univ, State Key Lab Mech Behav Mat, Xian 710049, Peoples R China;

    Soochow Univ, Coll Chem Chem Engn & Mat Sci, Lab Adv Optoelect Mat, Suzhou 215123, Peoples R China;

    Soochow Univ, Coll Chem Chem Engn & Mat Sci, Lab Adv Optoelect Mat, Suzhou 215123, Peoples R China;

    Xi An Jiao Tong Univ, State Key Lab Mech Behav Mat, Xian 710049, Peoples R China;

    Soochow Univ, Coll Chem Chem Engn & Mat Sci, Lab Adv Optoelect Mat, Suzhou 215123, Peoples R China;

    Soochow Univ, Coll Chem Chem Engn & Mat Sci, Lab Adv Optoelect Mat, Suzhou 215123, Peoples R China;

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