Rational molecular and device design enables organic solar cells approaching 20% efficiency

Fu，Jiehao1; Yang，Qianguang2,3,4; Huang，Peihao3,4; Chung，Sein5; Cho，Kilwon5; Kan，Zhipeng6; Liu，Heng7; Lu，Xinhui7; Lang，Yongwen1,8; Lai，Hanjian8; He，Feng8; Fong，Patrick W.K.1; Lu，Shirong2; Yang，Yang9; Xiao，Zeyun3,4; Li，Gang1

2024-12-01

10.1038/s41467-024-46022-3

Nature Communications   影响因子和分区

2041-1723

For organic solar cells to be competitive, the light-absorbing molecules should simultaneously satisfy multiple key requirements, including weak-absorption charge transfer state, high dielectric constant, suitable surface energy, proper crystallinity, etc. However, the systematic design rule in molecules to achieve the abovementioned goals is rarely studied. In this work, guided by theoretical calculation, we present a rational design of non-fullerene acceptor o-BTP-eC9, with distinct photoelectric properties compared to benchmark BTP-eC9. o-BTP-eC9 based device has uplifted charge transfer state, therefore significantly reducing the energy loss by 41 meV and showing excellent power conversion efficiency of 18.7%. Moreover, the new guest acceptor o-BTP-eC9 has excellent miscibility, crystallinity, and energy level compatibility with BTP-eC9, which enables an efficiency of 19.9% (19.5% certified) in PM6:BTP-C9:o-BTP-eC9 based ternary system with enhanced operational stability.

SCI

英语

其他

2-s2.0-85186172651

Scopus

1.Department of Electrical and Electronic Engineering,Research Institute for Smart Energy (RISE),Photonic Research Institute (PRI),The Hong Kong Polytechnic University,Hung Hom,Kowloon,999077,Hong Kong
2.School of Materials Science and Engineering,Taizhou University,Taizhou,318000,China
3.Thin-Film Solar Cell Technology Research Center,Chongqing Institute of Green and Intelligent Technology,Chongqing School,University of Chinese Academy of Sciences (UCAS Chongqing),Chinese Academy of Sciences,Chongqing,400714,China
4.University of Chinese Academy of Sciences,Beijing,100049,China
5.Department of Chemical Engineering,Pohang University of Science and Technology,Pohang,37673,South Korea
6.School of Physical Science and Technology,Guangxi University,Nanning,530004,China
7.Department of Physics,The Chinese University of Hong Kong,Shatin,999077,Hong Kong
8.Shenzhen Grubbs Institute and Department of Chemistry,Southern University of Science and Technology,Shenzhen,518055,China
9.Department of Materials Science and Engineering,University of California Los Angeles (UCLA),Los Angeles,90095,United States

Fu，Jiehao,Yang，Qianguang,Huang，Peihao,et al. Rational molecular and device design enables organic solar cells approaching 20% efficiency[J]. Nature Communications,2024,15(1).

Fu，Jiehao.,Yang，Qianguang.,Huang，Peihao.,Chung，Sein.,Cho，Kilwon.,...&Li，Gang.(2024).Rational molecular and device design enables organic solar cells approaching 20% efficiency.Nature Communications,15(1).

Fu，Jiehao,et al."Rational molecular and device design enables organic solar cells approaching 20% efficiency".Nature Communications 15.1(2024).