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Title: Measurement of ultralow injection current to polymethyl-methacrylate film
Authors: Yan, F 
Hong, Y
Chan, HLW 
Keywords: MIS devices
Polymer films
Space charge
Issue Date: 16-Jun-2008
Publisher: American Institute of Physics
Source: Applied physics letters, 16 June 2008, v. 92, 243301, p. 1-3 How to cite?
Journal: Applied physics letters 
Abstract: Ultralow electron/hole injection currents from an electrode to a polymethyl-methacrylate (PMMA) film can be accurately decided by measuring the slow shift in the flatband voltage of a metal-insulator-semiconductor (MIS) device. It has been found that both the electron and hole injection currents are limited by the metal/PMMA interface and can be roughly described with a modified Richardson-Schottky equation. The space charge or dipole relaxation in PMMA films has been observed as well, which induces an instant change in flatband voltage of the MIS devices. These properties are critical issues for the stability of organic thin film transistors with PMMA gate insulator.
ISSN: 0003-6951
Rights: © 2008 American Institute of Physics. This article may be downloaded for personal use only. Any other use requires prior permission of the author and the American Institute of Physics. The following article appeared in F. Yan, Y. Hong, & H.L.W. Chan. Appl. Phys. Lett. 92, 243301 (2008) and may be found at
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