有机太阳能电池
接受者
活动层
小分子
三元运算
分子
材料科学
能量转换效率
纳米技术
组分(热力学)
化学
图层(电子)
计算机科学
光电子学
聚合物
有机化学
物理
生物化学
薄膜晶体管
复合材料
热力学
程序设计语言
凝聚态物理
作者
Jiawei Deng,Jiabin Liu,Chengkai Jin,Shaorong Huang,Shijing Zhang,Qin Zhao,Jiaping Xie,Lin Liu,Lie Chen,Yiwang Chen
标识
DOI:10.1002/anie.202420385
摘要
Introduction of a guest component into the active layer is a simple yet effective approach to enhance the performance of organic solar cells (OSCs). Despite various guest components successfully employed in the OSCs, efficient guest components require deliberate design and ingenious inspiration, which still remains a big challenge for developing high performance OSCs. In this work, we propose a concept of "structural gene" engineering to create a new "double-gene" small molecule (L-DBDD) by simply combining the structures of both donor PM6 and acceptor L8-BO. L-DBDD inherit the features of both donor and acceptor, which naturally acts as a bridge between donor/acceptor (D/A) interfaces to strengthen D/A interactions and compatibility. Incorporation of this "double-gene" small molecule into the active layer can facilitate rapid charge dissociation and simultaneously optimize molecular packing for efficient charge transport. Consequently, the ternary OSC based on PM6: L-DBDD:L8-BO blend achieves a top power conversion efficiency (PCE) of 19.51%, significantly suppressing the binary control device (PCE=18.52%). These results demonstrate that the design concept of "double-gene" small molecule by combination of the "structural gene" of donor and acceptor provides a simple and meaningful guideline for guest component-assisted highly efficient OSCs.
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