Non-conjugated terpolymer acceptors for highly efficient and stable lager-area all-polymer solar cells  

作　　者：Jiabin Liu Jinliang Liu Jiawei Deng Bin Huang Jiyeon Oh Lin Zhao Liang Liu Changduk Yang Dong Chen Feiyan Wu Lie Chen 

机构地区：[1]College of Chemistry and Chemical Engineering/Institute of Polymers and Energy Chemistry(IPEC),Nanchang University,Nanchang 330031,Jiangxi,China [2]Institute of Advanced Scientific Research(iASR)/Key Laboratory of Functional Organic Small Molecules for Ministry of Education,Jiangxi Normal University,Nanchang 330022,Jiangxi,China [3]Faculty of Materials Metallurgy and Chemistry,Jiangxi University of Science and Technology 156 Ke Jia Avenue,Ganzhou 341000,Jiangxi,China [4]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),50 UNIST-gil,Ulju-gun,Ulsan 44919,South Korea

出　　处：《Journal of Energy Chemistry》2022年第8期631-638,I0017,共9页能源化学（英文版）

基　　金：the support from the National Natural Science Foundation of China(NSFC)(51973087,52173170 and 22169012);Thousand Talents Plan of Jiangxi Province(jxsq2019201004)。

摘　　要：All-polymer solar cells(all-PSCs)have made significant progress recently,but few studies have been conducted to investigate the lab-to-manufacturing translation from the spin-coating method to the printing process.Here,the random copolymerization method and non-conjugated backbone approach are integrated to manipulate the morphology and photoelectric properties of the active layer for large-area printed all-PSCs.A series of non-conjugated terpolymer acceptors PYSe-TC_(6)T(x)(x=5,10,and 20,refers to the molar ratio of TC_(6)T unit)are developed by covalently introducing non-conjugated unit TC_(6)T into the PYSe host bipolymer by random copolymerization.The spin-coated PYSe-TC_(6)T(10)-based all-PSC demonstrates the best power conversion efficiency(PCE)of 13.54%,superior to the PYSe-based one(12.45%).More intriguingly,morphological studies reveal that a combination of the random polymerization and non-conjugated backbone strategy can effectively prevent the active layer from overaggregation and improve the film quality during the printing process,thereby minimizing the efficiency and technology gap between spin-coated small-area devices and blade-coated large-area devices.By directly using the same preparation condition of spin-coating,the blade-coated small-area(0.04 cm^(2))delivers a PCE of 12.83%and the large-area(1.21 cm^(2))device achieves a PCE of 11.96%with a small PCE loss.Both PCE value and PCE loss are one of the most outstanding performances of the bladecoated all-PSCs.These findings reveal that a combination of the non-conjugated flexible backbone with random copolymerization to develop non-conjugated terpolymers is an attractive design concept to smoothly realize the lab-to-manufacturing translation.

关 键 词：All-polymer Non-conjugated Large area Blade-coating Lab-to-manufacturing translation 

分 类 号：TQ317[化学工程—高聚物工业] TM914.4[电气工程—电力电子与电力传动]