典型文献
n-Octyl substituted quinoxaline-based polymer donor enabling all-polymer solar cell with efficiency over 17％
文献摘要：
Recently,the power conversion efficiencies(PCEs)of all-polymer solar cells(all-PSCs)have increased rapidly.To further increase the PCE of all-PSCs,it is necessary to create new donor polymers matching the polymer acceptors.In this paper,we synthesize a new quinoxaline-based polymer donor PBQ8 with n-octyl side chain on the quinoxaline unit,which possesses the same skeleton structure to the previously reported PBQ5(with isooctyl side chain).The effects of alkyl side chains on the physicochemical proper-ties of the polymer donor were investigated.In comparison with PBQ5,PBQ8 exhibits stronger inter-molecular interactions and better molecular packing.When blending with polymer acceptor PY-IT,the PBQ8∶PY-IT based devices demonstrated a higher PCE value of 17.04％,which is one of the highest PCEs occurred in the all-PSCs.And the PBQ5∶PY-IT(PCE 15.56％,Voc 0.907 V,FF 69.72％,and Jsc 24.60 mA cm-2)is much lower.The PBQ8∶PY-IT blend displayed more efficient exciton dissociation,bet-ter molecular stacking properties,preferable phase separation and higher mobility.These indicate that as an effective method,side chain engineering can improve the efficiency of the all-PSCs.
文献关键词：
中图分类号：
作者姓名：
Ke Hu;Can Zhu;Shucheng Qin;Wenbin Lai;Jiaqi Du;Lei Meng;Zhanjun Zhang;Yongfang Li
作者机构：
School of Chemical Science,University of Chinese Academy of Sciences,Beijing 100049,China;Beijing National Laboratory for Molecular Sciences,CAS Key Laboratory of Organic Solids,Institute of Chemistry,Chinese Academy of Sciences,Beijing 100190,China;Laboratory of Advanced Optoelectronic Materials,Suzhou Key Laboratory of Novel Semiconductor-optoelectronics Materials and Devices,College of Chemistry,Chemical Engineering and Materials Science,Soochow University,Suzhou 215123,China
文献出处：
引用格式：
[1]Ke Hu;Can Zhu;Shucheng Qin;Wenbin Lai;Jiaqi Du;Lei Meng;Zhanjun Zhang;Yongfang Li-.n-Octyl substituted quinoxaline-based polymer donor enabling all-polymer solar cell with efficiency over 17％)[J].科学通报（英文版）,2022(20):2096-2102
A类：
Octyl,PBQ8,PBQ5,isooctyl
B类：
substituted,quinoxaline,donor,enabling,all,solar,efficiency,over,Recently,power,conversion,efficiencies,PCEs,cells,PSCs,have,increased,rapidly,To,further,necessary,create,new,polymers,matching,acceptors,In,this,paper,synthesize,side,unit,which,possesses,same,skeleton,structure,previously,reported,effects,alkyl,chains,physicochemical,were,investigated,comparison,exhibits,stronger,molecular,interactions,better,packing,When,blending,PY,IT,devices,demonstrated,higher,value,one,highest,occurred,And,Voc,FF,Jsc,mA,much,lower,displayed,more,efficient,exciton,dissociation,stacking,properties,preferable,phase,separation,mobility,These,indicate,that,effective,method,engineering,can,improve
AB值：
0.471395
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