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首页> 外文期刊>Journal of Materials Chemistry, A. Materials for energy and sustainability >Benzo[1,2-b:4,5-b]diselenophene-fused nonfullerene acceptors with alternative aromatic ring-based and monochlorinated end groups: a new synergistic strategy to simultaneously achieve highly efficient organic solar cells with the energy loss of 0.49 eV
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Benzo[1,2-b:4,5-b]diselenophene-fused nonfullerene acceptors with alternative aromatic ring-based and monochlorinated end groups: a new synergistic strategy to simultaneously achieve highly efficient organic solar cells with the energy loss of 0.49 eV

机译：Benzo [1,2-B：4,5-B]融合型非含有替代芳香环和一氯末端的非融合非融合蛋白受体：一种新的协同策略，同时实现高效的有机太阳能电池，其能量损失为0.49eV

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摘要

Herein, a new synergistic strategy using electron-rich core units and alternative aromatic structure-based 1,1-dicyanomethylene-3-indanone (IC) end-groups for nonfullerene PSCs was reported and investigated in an attempt to simultaneously obtain excellent PCE with extremely low E-loss. Specifically, two benzo[1,2-b:4,5-b]diselenophene-based, A-D-A-type chlorinated NF-SMAs (BDSeThCl and BDSePhCl) were synthesized, which were linked with a new 2-chlorothienyl-based IC and a conventional monochlorinated phenyl-based IC as end-groups, respectively. BDSePhCl exhibited a wider and red-shifted absorption and downshifted energy levels than BDSeThCl. The blend films of BDSePhCl:PM7 exhibited better charge generation properties, more suitable phase separation, and more balanced charge mobilities as compared to those of BDSeThCl:PM7. Therefore, compared to the BDSeThCl:PM7 blends with the best PCE of 11.91% and the E-loss of 0.58 eV, the optimal BDSePhCl:PM7 blends showed the enhanced PCE of 13.68% with the reduced E-loss of 0.49 eV. Notably, the excellent PCE of 13.68% is the highest value recorded to date for A-D-A-type NF-SMAs with a monochlorinated IC group in binary PSCs. The E-loss of 0.49 eV is the lowest value reported to date for A-D-A-type NF-SMAs in binary PSCs with the PCE > 13%. These results demonstrate that tailoring of the monochlorinated aromatic ring-based IC is an effective strategy to simultaneously improve the PCE and reduce the E-loss in binary PSCs.
机译：在此，利用富电子芯单元和替代芳族结构-1,1-二氰基亚甲基-3-茚满酮（IC）的端基为nonfullerene的PSC一个新的协同策略报告并试图研究以同时获得优异的PCE与极低E-损失。具体而言，2个苯并[1,2-B：4,5-B]二硒吩基，ADA型氯化NF-SMA的（BDSeThCl和BDSePhCl）的合成，将其用新的基于2-氯噻IC和链接常规单氯化的基于苯基IC作为端基，分别。 BDSePhCl表现出比BDSeThCl更宽和红移吸收和降档的能量水平。 PM7：BDSePhCl的共混膜：相比于那些BDSeThCl的PM7具有更好的电荷产生的性质，更合适的相分离，和更平衡的电荷迁移率。因此，相较于BDSeThCl：PM7共混物与11.91％的最佳PCE和0.58电子伏特的E-损失，最优BDSePhCl：PM7共混物显示出13.68％0.49电子伏特的降低的E-损失增强PCE。值得注意的是，13.68％的优异的PCE是记录日期为A-d-A型NF-形状记忆合金具有以二进制的PSC氯代的IC组的最高值。 0.49电子伏特的E-损耗是最低的值报告给与PCE> 13％的二进制的PSC日期为A-d-A型NF-形状记忆合金。这些结果证明的剪裁一氯代基环芳香族IC是同时改善PCE和减少在二进制的PSC的E-损失的有效策略。

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    Wan Shi-Sheng; Xu Xiaopeng; Wang Jin-Liang; Yuan Gui-Zhou; Jiang Zhao; Ge Gao-Yang; Bai Hai-Rui; Li Zheng; Peng Qiang;

  • 作者单位

    Beijing Inst Technol Sch Chem &

    Chem Engn Beijing Key Lab Photoelect Electrophon Convers Ma Key Lab Cluster Sci Minist Educ 5 South Zhongguancun St Beijing 100081 Peoples R China;

    Sichuan Univ Coll Chem Chengdu 610064 Sichuan Peoples R China;

    Beijing Inst Technol Sch Chem &

    Chem Engn Beijing Key Lab Photoelect Electrophon Convers Ma Key Lab Cluster Sci Minist Educ 5 South Zhongguancun St Beijing 100081 Peoples R China;

    Beijing Inst Technol Sch Chem &

    Chem Engn Beijing Key Lab Photoelect Electrophon Convers Ma Key Lab Cluster Sci Minist Educ 5 South Zhongguancun St Beijing 100081 Peoples R China;

    Beijing Inst Technol Sch Chem &

    Chem Engn Beijing Key Lab Photoelect Electrophon Convers Ma Key Lab Cluster Sci Minist Educ 5 South Zhongguancun St Beijing 100081 Peoples R China;

    Beijing Inst Technol Sch Chem &

    Chem Engn Beijing Key Lab Photoelect Electrophon Convers Ma Key Lab Cluster Sci Minist Educ 5 South Zhongguancun St Beijing 100081 Peoples R China;

    Beijing Inst Technol Sch Chem &

    Chem Engn Beijing Key Lab Photoelect Electrophon Convers Ma Key Lab Cluster Sci Minist Educ 5 South Zhongguancun St Beijing 100081 Peoples R China;

    Beijing Inst Technol Sch Chem &

    Chem Engn Beijing Key Lab Photoelect Electrophon Convers Ma Key Lab Cluster Sci Minist Educ 5 South Zhongguancun St Beijing 100081 Peoples R China;

    Sichuan Univ Coll Chem Chengdu 610064 Sichuan Peoples R China;

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  • 中图分类 工程材料学;
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