☆ 4.4 Article

Multiple-trapping in pentacene field-effect transistors with a nanoparticles self-assembled monolayer

AIP ADVANCES (2012)

Journal

AIP ADVANCES

Volume 2, Issue 2, Pages -

Publisher

AMER INST PHYSICS

DOI: 10.1063/1.4720399

Keywords

-

Categories

Nanoscience & Nanotechnology Materials Science, Multidisciplinary Physics, Applied

Funding

Japan Society for the Promotion of Science [22226007]
Grants-in-Aid for Scientific Research [22226007] Funding Source: KAKEN

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Abstract

A silver nanoparticles self-assembled monolayer (SAM) was incorporated in pentacene field-effect transistor and its effects on the carrier injection and transport were investigated using the current-voltage (I - V) and impedance spectroscopy (IS) measurements. The I - V results showed that there was a significant negative shift of the threshold voltage, indicating the hole trapping inside the devices with about two orders higher in the contact resistance and an order lower in the effective mobility when a SAM was introduced. The IS measurements with the simulation using a Maxwell-Wagner equivalent circuit model revealed the existence of multiple trapping states for the devices with NPs, while the devices without NPs exhibited only a single trap state. Copyright 2012 Author(s). This article is distributed under a Creative Commons Attribution 3.0 Unported License. [http://dx.doi.org/10.1063/1.4720399]

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