Host-Guest Strategy Enabling Nonhalogenated Solvent Processing for High-Performance All-Polymer Hosted Solar Cells  

作　　者：Yuting Huang Haiyang Chen Qunping Fan Ziyuan Chen Junyuan Ding Heyi Yang Zhe Sun Rui Zhang Weijie Chen Changduk Yang Feng Gao Yaowen Li 

机构地区：[1]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,Jiangsu 215123,China [2]Jiangsu Key Laboratory of Advanced Negative Carbon Technologies,Soochow University,Suzhou,Jiangsu 215123,China [3]State and Local Joint Engineering Laboratory for Novel Functional Polymeric Materials,Jiangsu Key Laboratory of Advanced Functional Polymer Design and Application,College of Chemistry,Chemical Engineering and Materials Science,Soochow University,Suzhou,Jiangsu 215123,China [4]State Key Laboratory for Mechanical Behavior of Materials,Xi'an Jiaotong University,Xi'an,Shaanxi 710049,China [5]Department of Energy Engineering,School of Energy and Chemical Engineering,Perovtronics Research Center,Low Dimensional Carbon Materials Center,Ulsan National Institute of Science and Technology(UNIST),Ulsan,Republic of Korea [6]Department of Physics,Chemistry and Biology(IFM),Linkoping University,Linkoping,Sweden

出　　处：《Chinese Journal of Chemistry》2023年第9期1066-1074,共9页中国化学（英文版）

基　　金：supported by the National Natural Science Foundation of China(Grant Nos.52273188,22075194,51820105003,52203233);the National Key Research and Development Program of China(Grant No.2020YFB1506400);the Natural Science Foundation of the Jiangsu Higher Education Institutions of China(Grant No.20KJA430010);the Priority Academic Program Development of Jiangsu Higher Education Institutions(PAPD),the National Postdoctoral Program forInnovative Talents(Grant Nos.BX2021205,BX20220221);project funded by China Postdoctoral Science Foundation(Grant No.2022M710102);Collaborative Innovation Center of Suzhou Nano Science and Technology,and the Key Laboratory of Polymeric Materials Design and Synthesis for Biomedical Function,Soochow University.

摘　　要：The power conversion efficiencies(PCEs)of all-polymer solar cells(all-PSCs),usually processed from low-boiling-point and toxic sol-vents,have reached high values of 18%.However,poor miscibility and uncontrollable crystallinity in polymer blends lead to a nota-ble drop in the PCEs when using green solvents,limiting the practical development of all-PSCs.Herein,a third component(guest)BTO was employed to optimize the miscibility and enhance the crystallinity of PM6/PY2Se-F host film processed from green solvent toluene(TL),which can effectively suppress the excessive aggregation of PY2Se-F and facilitate a nano-scale interpenetrating net-work morphology for exciton dissociation and charge transport.As a result,TL-processed all-polymer hosted solar cells(all-PHSCs)exhibited an impressive PCE of 17.01%.Moreover,the strong molecular interaction between the host and guest molecules also en-hances the thermal stability of the devices.Our host-guest strategy provides a unique approach to developing high-efficiency and stable all-PHSCs processed from green solvents,paving the way for the industrial development of all-PHSCs.

关 键 词：All-polymer solar cells Host-guest systems Crystal engineering Nonhalogenated green solvent Stability Morphology MISCIBILITY Ternary blend solar cells 

分 类 号：O63[理学—高分子化学]