Medium bandgap A-DA’D-A type small molecule acceptors prepared by synergetic modification strategy for efficient indoor organic photovoltaic devices

作     者：Tianwei Zou Yufei Gong Xiaojun Li Guangpei Sun Ho Ming Ng Ming Zhang Han Yu Zhi-Guo Zhang Lei Meng Yongfang Li 邹天维;龚钰扉;李骁骏;孙光沛;伍浩铭;张铭;于涵;张志国;孟磊;李永舫

作者机构：Beijing National Laboratory for Molecular SciencesCAS Key Laboratory of Organic SolidsInstitute of ChemistryChinese Academy of SciencesBeijing 100190China School of Chemical ScienceUniversity of Chinese Academy of SciencesBeijing 100049China Department of Chemistry and Hong Kong Branch of Chinese National Engineering Research Center for Tissue Restoration and ReconstructionHong Kong University of Science and TechnologyHong Kong 999077China State Key Laboratory of Chemical Resource EngineeringBeijing Advanced Innovation Center for Soft Matter Science and EngineeringBeijing University of Chemical TechnologyBeijing 100029China Laboratory of Advanced Optoelectronic MaterialsCollege of ChemistryChemical Engineering and Materials ScienceSoochow UniversitySuzhou 215123China 

基　　金：supported by the National Natural Science Foundation of China(52203248,52103243 and 52173188) the Key Research Program of the Chinese Academy of Sciences(XDPB13) the Strategic Priority Research Program of the Chinese Academy of Sciences(XDB 0520102) the Basic and Applied Basic Research Major Program of Guangdong Province(2019B030302007) Beijing National Laboratory for Molecular Science(2019BMS20017) the support from the Hong Kong Research Grants Council(GRF Project,16303024 and 16310824) 

出 版 物：《Science China Materials》 (中国科学(材料科学)(英文版))

年 卷 期：2025年第68卷第3期

页      码：830-837页

摘      要：Organic photovoltaic(OPV)is one of the most promising technologies for powering indoor electronic *** high-performance indoor organic photovoltaics(IOPV)require medium bandgap materials to absorb visible light efficiently and reduce energy ***,state-of-theart A-DA’D-A type small molecule acceptors(SMAs)have absorptions in the near-infrared region which mismatches with the room *** this work,two medium bandgap ADA’D-A type SMAs BTOL-Br and DFOL-Br were synthesized by a molecular synergetic modification strategy for the applications in *** results show that DFOL-Br with replacing the A’unit of benzothiadiazole in BTOL-Br by difluorine substituted benzene ring,exhibits blue-shifted absorption spectra and an up-shifted lowest unoccupied molecular orbital(LUMO)energy level than those of *** blending the SMAs with a polymer donor PBQx-TCl,the DFOL-Br-based film shows more ordered molecular packing and suitable phase *** a result,the DFOLBr-based device achieves a higher indoor efficiency of 26.8% under a 2600 K light-emitting diode lamp at 2000 lux than that of the BTOL-Br-based one(23.2%).This work indicates that the synergetic modification is an effective strategy for preparing medium bandgap A-DA’D-A type SMAs,which may become a useful SMA design guideline for developing highperformance IOPVs.

主 题 词：indoor organic photovoltaics medium bandgap small molecule acceptors synergetic modification strategy 

学科分类：081704[081704] 07[理学] 08[工学] 0817[工学-轻工类] 070303[070303] 0703[理学-化学类] 

核心收录：

D　O　I：10.1007/s40843-024-3135-3

馆 藏 号：203145415...