A universal nonfullerene electron acceptor matching with different band-gap polymer donors for high-performance polymer solar cells

文献情報

出版日 2018-03-20

DOI 10.1039/C7TA11339K

インパクトファクター 12.732

著者

Zhenghui Luo, Guanghao Li, Wei Gao, Kailong Wu, Zhi-Guo Zhang, Beibei Qiu, Haijun Bin, Lingwei Xue, Feng Liu, Yongfang Li, Chuluo Yang

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要旨

Unlike fullerene derivatives, current nonfullerene n-type organic semiconductor (n-OS) electron acceptors can rarely work efficiently with different band-gap polymer donors in polymer solar cells (PSCs). To address this issue, we designed and synthesized a new n-OS electron acceptor, namely m-MeIC, which is proved to be effective with different band-gap polymer donors including wide band-gap J71, medium band-gap PBDB-T and low band-gap PCE-10. Photovoltaic devices based on J71:m-MeIC and PBDB-T:m-MeIC achieved power conversion efficiencies (PCEs) as high as 12.08% and 10.93%, respectively. The difference in PCEs between the devices based on J71 and PBDB-T is mainly ascribed to the gap of the open circuit voltage. It should be mentioned that the J71-based device exhibited an energy loss of 0.62 eV, which is significantly lower than the most reported energy loss. For the low band-gap polymer donor PCE-10, the device also showed a relatively high PCE of 8.34%. The different device performances are analyzed in depth from charge transport and collection, to recombination loss mechanism and morphology of blend films. This work reveals that the new n-type organic semiconductor is very promising as a universal nonfullerene acceptor, pairing with different band-gap polymer donors.

掲載誌

Journal of Materials Chemistry A

CiteScore: 19.5

自己引用率: 4.7%

年間論文数: 2211

Journal of Materials Chemistry A, B & C cover high quality studies across all fields of materials chemistry. The journals focus on those theoretical or experimental studies that report new understanding, applications, properties and synthesis of materials. The journals have a strong history of publishing quality reports of interest to interdisciplinary communities and providing an efficient and rigorous service through peer review and publication. The journals are led by an international team of Editors-in-Chief and Associate Editors who are all active researchers in their fields. Journal of Materials Chemistry A, B & C are separated by the intended application of the material studied. Broadly, applications in energy and sustainability are of interest to Journal of Materials Chemistry A, applications in biology and medicine are of interest to Journal of Materials Chemistry B, and applications in optical, magnetic and electronic devices are of interest to Journal of Materials Chemistry C. More than one Journal of Materials Chemistry journal may be suitable for certain fields and researchers are encouraged to submit their paper to the journal that they feel best fits for their particular article. Example topic areas within the scope of Journal of Materials Chemistry A are listed below. This list is neither exhaustive nor exclusive. Artificial photosynthesis Batteries Carbon dioxide conversion Catalysis Fuel cells Gas capture/separation/storage Green/sustainable materials Hydrogen generation Hydrogen storage Photocatalysis Photovoltaics Self-cleaning materials Self-healing materials Sensors Supercapacitors Thermoelectrics Water splitting Water treatment

A universal nonfullerene electron acceptor matching with different band-gap polymer donors for high-performance polymer solar cells

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Journal of Materials Chemistry A

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