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

Liu, Wenrui1,2; Xu, Shengjie1; Lai, Hanjian3; Liu, Wuyue1,2; He, Feng3; Zhu, Xiaozhang1,2

2022-04-01

10.31635/ccschem.022.202201963

CCS CHEMISTRY   Impact Factor & Quartile

2096-5745

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)malononitrile-type nonfullerene acceptors (NFAs), they are inherently 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.

nonfullerene acceptors near-infrared cost stability power conversion efficiency

ESCI

English

Others

National Key R&D Program of China["2019YFA0705900","2017YFA0204701"] ; National Natural Science Foundation of China["22175187","91833304","21805289","22171273"] ; Key Research Program of the Chinese Academy of Sciences[XDPB13] ; Youth Innovation Promotion Association CAS[2020031]

Chemistry

Chemistry, Multidisciplinary

WOS:000849667700001

CHINESE CHEMICAL SOC

Web of Science

1.Chinese Acad Sci, CAS Key Lab Organ Solids, Beijing Natl Lab Mol Sci, Inst Chem, Beijing 100190, Peoples R China
2.Univ Chinese Acad Sci, Sch Chem Sci, Beijing 100049, Peoples R China
3.Southern Univ Sci & Technol, Shenzhen Grubbs Inst, Dept Chem, Shenzhen 518055, Peoples R China

Liu, Wenrui,Xu, Shengjie,Lai, Hanjian,et al. Near-Infrared All-Fused-Ring Nonfullerene Acceptors Achieving an Optimal Efficiency-Cost-Stability Balance in Organic Solar Cells[J]. CCS CHEMISTRY,2022.

Liu, Wenrui,Xu, Shengjie,Lai, Hanjian,Liu, Wuyue,He, Feng,&Zhu, Xiaozhang.(2022).Near-Infrared All-Fused-Ring Nonfullerene Acceptors Achieving an Optimal Efficiency-Cost-Stability Balance in Organic Solar Cells.CCS CHEMISTRY.

Liu, Wenrui,et al."Near-Infrared All-Fused-Ring Nonfullerene Acceptors Achieving an Optimal Efficiency-Cost-Stability Balance in Organic Solar Cells".CCS CHEMISTRY (2022).