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Highly Efficient Organic Solar Cells Based on S,N-Heteroacene Non-Fullerene Acceptors
Chemistry of Materials ( IF 8.6 ) Pub Date : 2018-07-06 00:00:00 , DOI: 10.1021/acs.chemmater.8b02276
Chuyi Huang 1, 2 , Xunfan Liao 1, 3 , Ke Gao 1 , Lijian Zuo 1 , Francis Lin 4 , Xueliang Shi 1 , Chang-Zhi Li 2 , Hongbin Liu 4 , Xiaosong Li 4 , Feng Liu 5 , Yiwang Chen 3 , Hongzheng Chen 2 , Alex K.-Y. Jen 1, 2, 4, 6
Affiliation  

Two novel non-fullerene acceptors, SN6IC and SN6IC-4F, based on an S,N-heteroacene backbone were designed and synthesized. The cyclopentadiene fragments of commonly used acceptors were replaced with pyrrole rings to improve the electron-donating ability to increase the energy levels of the molecules. Both acceptors match well with the absorption and energy levels of the polymer donor PBDB-T, and PBDB-T:SN6IC-4F-based solar cells showed an excellent power conversion efficiency of 13.2%, with a relatively small VOC loss of 0.54 eV. This study proves that the introduction of a nitrogen atom to replace the sp3-hybridized carbon in the fused ring is very effective for making highly efficient NFAs to further improve the performance of organic solar cells.

中文翻译:

基于S,N-杂茂并非富勒烯受体的高效有机太阳能电池

设计并合成了基于S,N-杂并苯骨架的两种新型非富勒烯受体SN6ICSN6IC-4F。常用受体的环戊二烯片段被吡咯环取代,以提高给电子能力以增加分子的能级。两种受体都与聚合物供体PBDB-T的吸收和能级很好地匹配,基于PBDB-T:SN6IC-4F的太阳能电池显示出13.2%的出色功率转换效率,相对较小的V OC损失为0.54 eV 。这项研究证明,引入氮原子来取代sp 3稠合环中的杂化碳对于制造高效NFA来进一步提高有机太阳能电池的性能非常有效。
更新日期:2018-07-06
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