Angew. Chem. Int. Edit.: N-Heterocyclic Carbene-Treated Gold Surfaces in Pentacene Organic Field-Effect Transistors: Improved Stability and Contact at the Interface

Title：

N-Heterocyclic Carbene-Treated Gold Surfaces in Pentacene Organic Field-Effect Transistors: Improved Stability and Contact at the Interface

Authors：

Aifeng Lv^1,2,3, Matthias Freitag⁴, Kathryn M. Chepiga⁴, Andreas H. Schäfer⁵, Frank Glorius^4,* and Lifeng Chi^3,*

Institutions：

¹Physikalisches Institut and Center for Nanotechnology (CeNTech) Universität Münster,   Wilhelm-Klemm-Str. 10, Münster 48149, Germany

²College of Chemistry and Chemical Engineering, Shanghai University of Engineering Science, 333 Longteng Road, Shanghai 201620, China

³Functional Nano & Soft Materials Laboratory (FUNSOM) Soochow University, Renai Rd. 199, Suzhou 215123, China.

⁴Organisch-Chemisches Institut, Universität Münster corrensstrasse 40, 48149 Münster, Germany

⁵nanoAnalytics GmbH, Heisenbergstraße 40, 48149Münster, Germany

Abstract：

N-Heterocyclic carbene (NHC) molecules, which reacted with the surface of Au electrodes, have been successfully applied in the 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 reduced down to 85%. Even after annealing the NHC-Au electrodes at 200℃for two hours before pentacene deposition, the charge carrier mobility of the pentacene transistors did not decrease. The distinguished performance renders the NHCs as excellent alternatives to thiols as metal modifiers for the application in organic field-effect transistors (OFETs).

IF：

11.994

Link：

https://onlinelibrary.wiley.com/doi/10.1002/anie.201713415