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Silicon Naphthalocyanine Tetraimides: Cathode Interlayer Materials for Highly Efficient Organic Solar Cells
Author(s) -
Cai Chunsheng,
Yao Jia,
Chen Lie,
Yuan Zhongyi,
Zhang ZhiGuo,
Hu Yu,
Zhao Xiaohong,
Zhang Youdi,
Chen Yiwang,
Li Yongfang
Publication year - 2021
Publication title -
angewandte chemie international edition
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 5.831
H-Index - 550
eISSN - 1521-3773
pISSN - 1433-7851
DOI - 10.1002/anie.202106364
Subject(s) - cathode , homo/lumo , organic solar cell , materials science , imide , thermal stability , doping , silicon , electron , energy conversion efficiency , electrical resistivity and conductivity , electron mobility , conductivity , optoelectronics , chemical engineering , polymer chemistry , chemistry , organic chemistry , polymer , composite material , molecule , engineering , physics , quantum mechanics , electrical engineering
Naphthalocyanine derivatives (SiNcTI‐N and SiNcTI‐Br) were firstly used as excellent cathode interlayer materials (CIMs) in organic solar cells, via introducing four electron‐withdrawing imide groups and two hydrophilic alkyls. Both of them showed deep LUMO energy levels (below −3.90 eV), good thermal stability (T d >210 °C), and strong self‐doping property. The SiNcTI‐Br CIM displayed high conductivity (4.5×10 −5 S cm −1 ) and electron mobility (7.81×10 −5 cm 2 V −1 s −1 ), which could boost the efficiencies of the PM6:Y6‐based OSCs over a wide range of CIM layer thicknesses (4–25 nm), with maximum efficiency of 16.71 %.