典型文献
N-alkyl chain modification in dithienobenzotriazole unit enabled efficient polymer donor for high-performance non-fullerene solar cells
文献摘要：
Molecular design of either polymer donors or acceptors is a promising strategy to tune the morphology of the active layer of organic solar cells,enabling a high-performance device.Thereinto,developing novel polymer donors is an alternative method to obtain high photovoltaic performance.Herein,we present a facile side-chain engineering on the dithiophenobenzotriazole(DTBTz)unit of newly-designed polymer donors(named pBDT-DTBTz-EH and pBDT-DTBTz-Me)to boost the performance of non-fullerene solar cells.Compared with pBDT-DTBTz-EH with long N-alkyl side chains,pBDT-DTBTz-Me with a short methyl exhibits stronger molecular aggregation,higher absorption coefficient,and preferred face-on ori-entation packing.As a consequence,pBDT-DTBTz-Me based devices achieve an optimal power conversion efficiency of 15.31％when donors are paired with the narrow bandgap acceptor Y6,which is superior to that of pBDT-DTBTz-EH based devices(9.17％).Additionally,the pBDT-DTBTz-Me based devices manifest more effective charge separation and transfer than pBDT-DTBTz-EH based devices.These results indicate that fine-tuning side chains of polymer donors provide new insights for the design of high-performance polymer donors in non-fullerene solar cells.
文献关键词：
中图分类号：
作者姓名：
Jiaxin Xu;Hexiang Feng;Yuanying Liang;Haoran Tang;Yixu Tang;Zurong Du;Zhicheng Hu;Fei Huang;Yong Cao
作者机构：
Institute of Polymer Optoelectronic Materials and Devices,State Key Laboratory of Luminescent Materials and Devices,South China University of Technology,Guangzhou 510640,Guangdong,China
文献出处：
引用格式：
[1]Jiaxin Xu;Hexiang Feng;Yuanying Liang;Haoran Tang;Yixu Tang;Zurong Du;Zhicheng Hu;Fei Huang;Yong Cao-.N-alkyl chain modification in dithienobenzotriazole unit enabled efficient polymer donor for high-performance non-fullerene solar cells)[J].能源化学,2022(03):382-389
A类：
dithienobenzotriazole,Thereinto,dithiophenobenzotriazole,DTBTz,pBDT
B类：
alkyl,modification,unit,enabled,polymer,performance,fullerene,solar,cells,Molecular,either,donors,acceptors,promising,strategy,tune,morphology,active,layer,organic,enabling,developing,novel,alternative,method,obtain,photovoltaic,Herein,present,facile,side,engineering,newly,designed,named,EH,Me,boost,Compared,long,chains,short,methyl,exhibits,stronger,molecular,aggregation,higher,absorption,coefficient,preferred,face,ori,entation,packing,consequence,devices,achieve,optimal,power,conversion,efficiency,when,paired,narrow,bandgap,Y6,which,superior,that,Additionally,manifest,more,effective,charge,separation,transfer,than,These,results,indicate,fine,tuning,provide,insights
AB值：
0.424795
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