Premium
N‐Heterocyclic‐Carbene‐Treated Gold Surfaces in Pentacene Organic Field‐Effect Transistors: Improved Stability and Contact at the Interface
Author(s) -
Lv Aifeng,
Freitag Matthias,
Chepiga Kathryn M.,
Schäfer Andreas H.,
Glorius Frank,
Chi Lifeng
Publication year - 2018
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.201713415
Subject(s) - pentacene , contact resistance , materials science , transistor , annealing (glass) , field effect transistor , electron mobility , electrode , optoelectronics , thin film transistor , nanotechnology , chemistry , electrical engineering , voltage , engineering , composite material , layer (electronics)
N‐Heterocyclic carbenes (NHCs), which react with the surface of Au electrodes, have been successfully applied in pentacene transistors. With the application of NHCs, the charge‐carrier mobility of pentacene transistors increased by five times, while the contact resistance at the pentacene–Au interface was reduced by 85 %. Even after annealing the NHC–Au electrodes at 200 °C for 2 h before pentacene deposition, the charge‐carrier mobility of the pentacene transistors did not decrease. The distinguished performance makes NHCs as excellent alternatives to thiols as metal modifiers for the application in organic field‐effect transistors (OFETs).