Nano Archive

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

Hu, PingAn and Li, Kun and Chen, Weilin and Peng, Li and Chu, Daping and O'Neill, William (2010) Fabrication of an organic field effect transistor using nano imprinting of Ag inks and semiconducting polymers. Journal of Micromechanics and Microengineering, 20 (7). 075032.

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Official URL: http://stacks.iop.org/0960-1317/20/i=7/a=075032

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 ( I on / I off ratio: 1 × 10 3 ; mobility: 0.071 cm 2 V −1 s −1 ).

Item Type:Article
ID Code:11219
Deposited By:Prof. Alexey Ivanov
Deposited On:01 Nov 2011 23:28
Last Modified:02 Nov 2011 00:47

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