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Non‐Halogenated‐Solvent Processed and Additive‐Free Tandem Organic Solar Cell with Efficiency Reaching 16.67%
Author(s) -
Qin Shucheng,
Jia Zhenrong,
Meng Lei,
Zhu Can,
Lai Wenbin,
Zhang Jinyuan,
Huang Wenchao,
Sun Chenkai,
Qiu Beibei,
Li Yongfang
Publication year - 2021
Publication title -
advanced functional materials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 6.069
H-Index - 322
eISSN - 1616-3028
pISSN - 1616-301X
DOI - 10.1002/adfm.202102361
Subject(s) - tandem , organic solar cell , materials science , environmentally friendly , energy conversion efficiency , phase (matter) , solvent , polymer , nanotechnology , chemical engineering , organic chemistry , chemistry , optoelectronics , composite material , ecology , engineering , biology
Organic solar cells (OSCs) have recently reached a remarkably high efficiency and become a promising technology for commercial application. However, OSCs with top efficiency are mostly processed by halogenated solvents and with additives that are not environmentally friendly, which hinders large‐scale manufacture. In this study, high‐performance tandem OSCs, based on polymer donors and two small‐molecule acceptors with different bandgaps, are fabricated by solution processing with non‐halogenated solvents without additive. Importantly, the two active layers developed from non‐halogenated solvents show better phase segregation and charge transport properties, leading to superior performance than halogenated ones. As a result, a tandem OSC with high efficiency of up to 16.67% is obtained, showing unique advantages in future massive production.