Alkyl side chain engineering enables high performance as-cast organic solar cells of over 17%efficiency
作者机构：State Key Laboratory of Powder MetallurgyCollege of Chemistry and Chemical EngineeringCentral South UniversityChangsha 410083China Department of PhysicsThe Chinese University of Hong KongNew TerritoriesHong Kong 999077China
出 版 物：《Fundamental Research》 (自然科学基础研究（英文版）)
年 卷 期：2023年第3卷第4期
页 面：611-617页
核心收录：
学科分类：08[工学] 080502[工学-材料学] 0805[工学-材料科学与工程（可授工学、理学学位）]
基 金：Y.Zou acknowledges the National Natural Science Foundation of China(21875286 and 52125306) the National Key Research and De velopment Program of China(2017YFA0206600) X.Lu acknowledges the Research Grants Council of Hong Kong(14303519)
主 题：Organic solar cells Alkyl side chains As-cast Green solvent Stability
摘 要：Achieving high-performance as-cast OSCs is crucial for industrialization in the future,owing to the advantages of better stability,environmental-friendly,and decreasing production *** this regard,we synthesized an ADA′D-A type acceptor,Y6-eC6-BO,by shortening the straight alkyl side-chains on the thiophene position from C_(11) to C_(6) as well as lengthening the branched alkyl side-chains on the pyrrole position of Y6 to achieve a stronger crystallization and better miscibility than *** a result,the corresponding chloroform-processed as-cast PM6:Y6-eC6-BO OSC showed a high PCE of 17.33%,which was one of the highest efficiencies of as-cast *** the as-cast PM6:Y6-eC6-BO OSCs processed from o-xylene displayed a PCE of 16.38%,as far as we know,this is among the highest efficiencies of non-halogenated-solvent processed as-cast *** results demonstrated tailoring the alkyl side-chain of NFAs is a feasible and simple approach to achieve high performance as-cast OSCs and provides guideline in molecular design in the future.
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