Near-Infrared All-Fused-Ring Nonfullerene Acceptors Achieving an Optimal Efficiency-Cost-Stability Balance in Organic Solar Cells  

作　　者：Wenrui Liu Shengjie Xu Hanjian Lai Wuyue Liu Feng He Xiaozhang Zhu 

机构地区：[1]Beijing National Laboratory for Molecular Sciences,CAS Key Laboratory of Organic Solids Institute of Chemistry,Chinese Academy of Sciences,Beijing 100190 [2]School of Chemical Sciences,University of Chinese Academy of Sciences,Beijing 100049 [3]Department of Chemistry,Shenzhen Grubbs Institute,Southern University of Science and Technology,Shenzhen 518055

出　　处：《CCS Chemistry》2023年第3期654-668,共15页中国化学会会刊（英文）

基　　金：The authors thank the National Key R&D Program of China(grant nos.2019YFA0705900 and 2017YFA0204701);the National Natural Science Foundation of China(grant nos.22175187,91833304,21805289,and 22171273);Key Research Program of the Chinese Academy of Sciences(grant no.XDPB13);Youth Innovation Promotion Association CAS(grant no.2020031)for their financial support.

摘　　要：Synergistically achieving stability,cost,and efficiency is crucial for the commercialization of organic solar cells(OSCs).Despite the rapid development of 2-(3-oxo-2,3-dihydro-1H-inden-1-ylidene)malo nonitriletypenon fullerene acceptors(NFAs),they areinherently unstable due to the vulnerable exocyclic double bond and possess high synthesis complexity(SC).Based on the“all-fused-ring electron acceptor(AFAR)”concept,we report two new near-infrared NFAs,F11 and F13,featuring all fused dodecacyclic rings.By developing a whole set of synthetic procedures,F11 and F13 can be conveniently prepared at a 10 g scale within a notably short period,displaying both the low SC and the lowest costs among reported NFAs,even comparable to the classical photovoltaic material,P3HT.In comparison with the one-dimensional stacking of ITYM(ITYM=2,2′-(7,7,15,15-tetrahexyl-7,15-dihydro-s-indaceno[1,2-b:5,6-b′]diindeno[1,2-d]thiophene-2,10(2H)-diylidene)dimalononitrile),the first AFRA,and mixed J-and H-aggregations in Y6,F-acceptors show a compact honeycomb-type three-dimensional stacking with exclusive J-aggregations,favoring multichannel charge transport.By matching a medium-bandgap polymer donor,F13 delivers greater than 13%power conversion efficiencies,which is the highest performance among non-INCN acceptors,and shows device stability superior to the typical ITIC-and Y6-based OSCs as evidenced by the negligible burn-in losses.This work presents a first and successful example of NFAs achieving an optimal efficiency-cost-stability balance in OSCs.

关 键 词：nonfullerene acceptors NEAR-INFRARED cost stability power conversion efficiency 

分 类 号：TM914.4[电气工程—电力电子与电力传动]