首页|Alkyl-thiophene-alkyl linkers to construct double-cable conjugated polymers for single-component organic solar cells

Alkyl-thiophene-alkyl linkers to construct double-cable conjugated polymers for single-component organic solar cells

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In this work,semirigid linkers of the alkyl-thiophene-alkyl structure are developed to construct double-cable polymers.Three alkyl units,propyl(C3H6),hexyl(C6H12),and dodecyl(C12H24),are applied as semi-rigid linkers,yielding three double-cable polymers:PBC6-T,PBC12-T,and PBC24-T,respectively.PBC12-T which uses C6H12-thiophene-C6H12 linkers is found to exhibit the best device efficiency of 5.56％,while PBC6-T and PBC24-T with shorter or longer linkers yield device efficiencies of only 2.65％and 1.09％in single-component organic solar cells(SCOSCs).Further studies reveal that PBC12-T exhibits higher crys-tallinity and improved charge transport,resulting in better efficiencies.Our work provides an approach to construct double-cable conjugated polymers with long alkyl linkers,and it shows the importance of the linker length for the photovoltaic performance of SCOSCs.

Double-cable conjugated polymerSingle-component organic solar cellCrystallinitySemirigid linkersAlkyl-thiophene-alkyl

Wenbin Lai、Safakath Karuthedath、Chengyi Xiao、Lei Meng、Frédéric Laquai、Weiwei Li、Yongfang Li

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Beijing National Laboratory for Molecular Sciences,Key Laboratory of Organic Solids,Institute of Chemistry,Chinese Academy of Sciences,Beijing 100190,China

University of Chinese Academy of Sciences,Beijing 100049,China

King Abdullah University of Science and Technology(KAUST),KAUST Solar Center(KSC),Physical Sciences and Engineering Division(PSE),Material Science and Engineering Program(MSE),Thuwal 23955-6900,Kingdom of Saudi Arabia

Institute of Materials Research,Tsinghua Shenzhen International Graduate School,Tsinghua University,Shenzhen 518055,China

Beijing Advanced Innovation Center for Soft Matter Science and Engineering & State Key Laboratory of Organic-Inorganic Composites,Beijing University of Chemical Technology,Beijing 100029,China

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北京市自然科学基金科技部项目国家自然科学基金国家自然科学基金Open Project of State Key Laboratory of Organic-Inorganic CompositesOpen Project of State Key Laboratory of Supramolecular Structure and MaterialsKing Abdullah University of Science and Technology(KAUST)

JQ210062018YFA0208504buctrc201828XK1802-2oic-202201006sklssm202209

2024

10.1016/j.cclet.2023.108287

中国化学快报(英文版)
中国化学会

中国化学快报(英文版)

CSTPCD
影响因子：0.771
ISSN：1001-8417
年,卷(期)：2024.35(1)
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