CUED Publications database

Fabrication of an organic field effect transistor using nano imprinting of Ag inks and semiconducting polymers

Hu, P and Li, K and Chen, W and Peng, L and Chu, D and O'Neill, W (2010) Fabrication of an organic field effect transistor using nano imprinting of Ag inks and semiconducting polymers. Journal of Micromechanics and Microengineering, 20. ISSN 0960-1317

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Abstract

A simple and cheap procedure for flexible electronics fabrication was demonstrated by imprinting metallic nanoparticles (NPs) on flexible substrates. Silver NPs with an average diameter of 10 nm were prepared via an improved chemical approach and Ag Np ink was produced in α-terpineol with a concentration up to 15%. Silver micro/nanostructures with a dimension varying from nanometres to microns were produced on a flexible substrate (polyimide) by imprinting the as-prepared silver ink. The fine fluidic properties of an Ag NP/α-terpineol solution and low melting temperatures of silver nanoparticles render a low pressure and low temperature procedure, which is well suited for flexible electronics fabrication. The effects of sintering and mechanical bending on the conductivity of imprinted silver contacts were also investigated. Large area organic field effect transistors (OFET) on flexible substrates were fabricated using an imprinted silver electrode and semiconducting polymer. The OFET with silver electrodes imprinted from our prepared oleic acid stabilized Ag nanoparticle ink show an ideal ohmic contact; therefore, the OFET exhibit high performance (Ion/Ioff ratio: 1 × 103; mobility: 0.071 cm2 V-1 s-1). © 2010 IOP Publishing Ltd.

Item Type: Article
Subjects: UNSPECIFIED
Divisions: Div B > Photonics
Div E > Production Processes
Depositing User: Cron Job
Date Deposited: 07 Mar 2014 11:31
Last Modified: 08 Dec 2014 02:37
DOI: 10.1088/0960-1317/20/7/075032