All-printed thin-film transistors from networks of liquid-exfoliated nanosheets

• DOI: 10.1126/science.aal4062
• Publication Date: 2017-04-06T18:10:53Z
• Authors: Adam G. Kelly; Toby Hallam; Claudia Backes; Andrew Harvey; Amir Sajad Esmaeily; Ian Godwin; João Coelho; Valeria Nicolosi; Jannika Lauth; Aditya Kulkarni; Sachin Kinge; Laurens D. A. Sie...; Georg S. Duesberg; Jonathan N. Coleman
• Keywords: 02 engineering and technology; 0210 nano-technology; 7. Clean energy

Printing nanosheet-network transistors

Two-dimensional (2D) materials such as graphene and metal chalcogenides such as tungsten diselenide (WSe2) are attractive for use in low-cost thin-film transistors (TFTs) because they have high charge-carrier mobility. Kelly et al. printed TFTs from networks of exfoliated dispersions of 2D materials with graphene contacts, WSe 2 as the semiconductor, and a boron nitride separator. Electrolytic gating with ionic liquids enabled higher operating currents than achieved with comparable organic TFTs.

Science , this issue p. 69