Integrated linker-regulation and ring-fusion engineering for efficient additive-free non-fullerene organic solar cells
文献类型:期刊论文
作者 | Yin, Yuli; Zhang, Wenxia; Zheng, Zhi; Ge, Ziyi; Liu, Yi; Guo, Fengyun; Gao, Shiyong; Zhao, Liancheng; Zhang, Yong |
刊名 | JOURNAL OF MATERIALS CHEMISTRY C |
出版日期 | 2020 |
卷号 | 8期号:36页码:12516-12526 |
关键词 | ELECTRON-ACCEPTOR HIGH HOLE PERFORMANCE POLYMER DESIGN BACKBONE VOLTAGE |
DOI | 10.1039/d0tc02499f |
英文摘要 | The rational molecular design and structural modification of quasi-two-dimensional fused perylene diimide (quasi-2D FPDI) acceptors have received growing attention for application in non-fullerene organic solar cells (NF-OSCs). Herein, we designed and synthesized two pairs of FPDI acceptors, one in the form of FPDI-pi-bridge-FPDI with the pi-bridge being either an axisymmetric thiophene (T) or a centrosymmetric thienothiophene (TT) unit, and the other being the corresponding ring-fusion counterpart. Four small molecule acceptors, namely T-FPDI, TT-FPDI, FT-FPDI and FTT-FPDI, were paired with a common PTB7-Th polymeric electron donor as active materials for a comparative study of the effects of linkers and ring fusion on their photovoltaic performances. The T-FPDI-based NF-OSC exhibited a decent power conversion efficiency (PCE) of 5.50%, while a higher PCE of 7.17% with a simultaneous enhancement in the open circuit voltage (V-oc), the short-circuit current density (J(sc)) and the fill factor (FF) was achieved for the TT-FPDI-based solar cells. The solar cells based on the ring-fused FT-FPDI and FTT-FPDI acceptors displayed PCEs of 6.75% and 7.66%, respectively, both higher than those of the corresponding non-fused counterparts. Notably, the trade-off between theJ(sc)andV(oc), commonly observed in fullerene OSCs, is alleviated in these systems. It is also worth noting that the NF-OSCs based on these FPDI acceptors do not need any solvent additives. This successful molecular engineering based on novel quasi-2D FPDI building blocks may inspire the development of emergent electron acceptors for high performance additive-free NF-OSCs. |
学科主题 | Materials Science ; Physics |
源URL | [http://ir.nimte.ac.cn/handle/174433/20477] |
专题 | 2020专题 2020专题_期刊论文 |
作者单位 | 1.Ge, ZY (corresponding author), Chinese Acad Sci, Ningbo Inst Mat Technol & Engn, Ningbo 315201, Peoples R China. 2.Zhang, Y (corresponding author), Harbin Inst Technol, Sch Mat Sci & Engn, Harbin 150001, Peoples R China. 3.Liu, Y (corresponding author), Lawrence Berkeley Natl Lab, Mol Foundry, Berkeley, CA 94720 USA. 4.Zhang, Y (corresponding author), Zhengzhou Univ, Sch Mat Sci & Engn, Zhengzhou 450001, Peoples R China. |
推荐引用方式 GB/T 7714 | Yin, Yuli,Zhang, Wenxia,Zheng, Zhi,et al. Integrated linker-regulation and ring-fusion engineering for efficient additive-free non-fullerene organic solar cells[J]. JOURNAL OF MATERIALS CHEMISTRY C,2020,8(36):12516-12526. |
APA | Yin, Yuli.,Zhang, Wenxia.,Zheng, Zhi.,Ge, Ziyi.,Liu, Yi.,...&Zhang, Yong.(2020).Integrated linker-regulation and ring-fusion engineering for efficient additive-free non-fullerene organic solar cells.JOURNAL OF MATERIALS CHEMISTRY C,8(36),12516-12526. |
MLA | Yin, Yuli,et al."Integrated linker-regulation and ring-fusion engineering for efficient additive-free non-fullerene organic solar cells".JOURNAL OF MATERIALS CHEMISTRY C 8.36(2020):12516-12526. |
入库方式: OAI收割
来源:宁波材料技术与工程研究所
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