Polymer-nanoparticle hybrid dielectrics for flexible transistors and inverters

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journalpeer-review

30 Scopus Citations
View graph of relations

Author(s)

Detail(s)

Original languageEnglish
Pages (from-to)4060-4065
Journal / PublicationJournal of Materials Chemistry
Volume22
Issue number9
Publication statusPublished - 7 Mar 2012

Abstract

We report solution processed high-k dielectric films with excellent insulating quality (leakage current densities ∼10 -8 A cm -2 at 2 MV cm -1), tunable dielectric constant (4.7-6.7) and high flexibility. The effects of incorporating different concentrations of barium zirconate (BZ) nanoparticles into poly-4-vinylphenol (PVP) gate dielectrics for flexible organic thin film transistors (OTFTs) were systematically studied. The effect of dielectric composition on the mobilities (μ), threshold voltages (V T), on/off ratios and subthreshold swings (S) has been discussed. The morphologies of dielectric and semiconductor films were investigated and shown to correlate closely with device performances. Two kinds of unipolar inverters based on these transistors have been fabricated and characterized. The depleted load inverter showed large signal gain and sharp switching. The electrical properties under various compressive and tensile strains evidenced the high mechanical stability of the dielectric films, hence the transistors and inverters. These findings will be of value for printable electronic devices on flexible substrates. © 2012 The Royal Society of Chemistry.

Citation Format(s)

Polymer-nanoparticle hybrid dielectrics for flexible transistors and inverters. / Zhou, Ye; Han, Su-Ting; Xu, Zong-Xiang; Roy, V. A L.

In: Journal of Materials Chemistry, Vol. 22, No. 9, 07.03.2012, p. 4060-4065.

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journalpeer-review