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Porous Organic Polymer Films with Tunable Work Functions and Selective Hole and Electron Flows for Energy Conversions
Author(s) -
Gu Cheng,
Huang Ning,
Chen Youchun,
Zhang Huanhuan,
Zhang Shitong,
Li Fenghong,
Ma Yuguang,
Jiang Donglin
Publication year - 2016
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.201510723
Subject(s) - work function , anode , materials science , cathode , optoelectronics , electrode , diode , energy transformation , electron , polymer , ionic bonding , work (physics) , charge carrier , oled , nanotechnology , chemistry , composite material , ion , organic chemistry , physics , layer (electronics) , quantum mechanics , thermodynamics , mechanical engineering , engineering
Organic optoelectronics are promising technologies for energy conversion. However, the electrode interlayer, a key material between active layers and conducting electrodes that controls the transport of charge carriers in and out of devices, is still a chemical challenge. Herein, we report a class of porous organic polymers with tunable work function as hole‐ and electron‐selective electrode interlayers. The network with organoborane and carbazole units exhibits extremely low work‐function‐selective electron flow; while upon ionic ligation and electro‐oxidation, the network significantly increases the work function and turns into hole conduction. We demonstrate their outstanding functions as anode and cathode interlayers in energy‐converting solar cells and light‐emitting diodes.