Investigation of charge transfer between donor and acceptor for small-molecule organic solar cells by scanning tunneling microscopy and ultrafast transient absorption spectroscopy

作     者：Yuchuan Xiao Linxiu Cheng Xinyu Sui Qi Wang Jie Chen Dan Deng Jianqi Zhang Xuan Peng Xiaokang Li Xunwen Xiao Ke Deng Xinfeng Liu Zhixiang Wei Qingdao Zeng Yuchuan Xiao;Linxiu Cheng;Xinyu Sui;Qi Wang;Jie Chen;Dan Deng;Jianqi Zhang;Xuan Peng;Xiaokang Li;Xunwen Xiao;Ke Deng;Xinfeng Liu;Zhixiang Wei;Qingdao Zeng

作者机构：CAS Key Laboratory of Standardization and Measurement for NanotechnologyCAS Center for Excellence in NanoscienceNational Center for Nanoscience and Technology(NCNST)Beijing 100190China Jiangxi Provincial Key Laboratory of Low-Carbon Solid Waste RecyclingSchool of Geography and Environmental EngineeringGannan Normal UniversityGanzhou 341000China CAS Key Laboratory of Nanosystem and Hierarchical FabricationCAS Center for Excellence in NanoscienceNational Center for Nanoscience and TechnologyBeijing 100190China Center of Materials Science and Optoelectronics EngineeringUniversity of Chinese Academy of SciencesBeijing 100049China College of Chemistry and Chemical EngineeringGannan Normal UniversityGanzhou 341000China School of Materials and Chemical EngineeringNingbo University of TechnologyNingbo 315211China 

出 版 物：《Nano Research》 (纳米研究（英文版）)

年 卷 期：2022年第15卷第9期

页      面：8019-8027页

核心收录：

学科分类：081704[工学-应用化学] 07[理学] 070304[理学-物理化学(含∶化学物理)] 08[工学] 0817[工学-化学工程与技术] 0703[理学-化学] 

基　　金：the National Basic Research Program of China(Nos.2017YFA0205000 and 2016YFA0200700) the National Natural Science Foundation of China(Nos.21773041,21972031,21301092,and 20962002) the Strategic Priority Research Program of Chinese Academy of Sciences(No.XDB36000000) 

主　　题：organic solar cells scanning tunneling microscopy transient absorption spectroscopy charge transfer donor-acceptor system 

摘      要：Small-molecule organic solar cell is a category of clean energy potential device since charge transfers between donor and *** morphologies,co-assembly behavior,interaction sites,and charge transfer of BTID-nF(n=1,2)/PC71BM donor-acceptor system in the active layer of organic solar cell have been studied employing scanning tunneling microscopy(STM),scanning tunneling spectroscopy(STS),density functional theory(DFT)calculations,and transient absorption(TA)*** results show that BTID-1F and BTID-2F form bright strip structures,whereas BTID-nF(n=1,2)/PC71BM form ridge-like structures with each complex composed of one BTID-nF(n=1,2)molecule and four PC71BM molecules which adsorbed around the BTID-nF(n=1,2)molecule by S···π*** the assistance of S···πinteraction between BTID-nF(n=1,2)and PC71BM,BTID-nF(n=1,2)/PC71BM co-assembled ridge-like structures are more stable than the BTID-nF(n=1,2)ridge *** investigate the charge transfer of BTID-nF(n=1,2)/PC71BM system,STS measurements,DFT calculation,and TA spectroscopy are further *** results show that charge transfer occurs in BTID-nF(n=1,2)/PC71BM system with the electron transferring from BTID-nF(n=1,2)molecules to PC71BM.