NISCAIR Online Periodicals Repository

NISCAIR ONLINE PERIODICALS REPOSITORY (NOPR)  >
NISCAIR PUBLICATIONS >
Research Journals >
Indian Journal of Pure & Applied Physics (IJPAP) >
IJPAP Vol.46 [2008] >
IJPAP Vol.46(11) [November 2008] >


Title: Charge-carrier injection and extraction at metal-dielectric contact under an applied electric field
Authors: Neagu, Eugen R
Keywords: Dielectrics
Metal-dielectric contact
Charge injection/extraction
Traps
Issue Date: Nov-2008
Publisher: CSIR
Abstract: There is charge injection/extraction at a metal-dielectric contact. In general, the problem is treated by analogy with that for metal-semiconductor contact. However, the electrical conduction through dielectrics is bulk and electrode limited. Consequently, it is difficult to discriminate between the two effects and to have specific information only about one of the mechanisms. We propose a method that allows to determinate the sign and the value of the electric charge injected/extracted at the metal-dielectric contact. The method is based on the modification of the external electric field of a dielectric when electric charge is injected/extracted onto its surface. The lowest surface charge density measured in the presented experiments was around 1.8 10⁻⁶ cm⁻² which corresponds to a medium distance of about 300 nm between two trapped charges. The injection/extraction process takes place no matter if there is a conduction current through the sample.
Page(s): 809-814
ISSN: 0019-5596
Source:IJPAP Vol.46(11) [November 2008]

Files in This Item:

File Description SizeFormat
IJPAP 46(11) 809-814.pdf139.67 kBAdobe PDFView/Open
 Current Page Visits: 529 
Recommend this item

 

National Knowledge Resources Consortium |  NISCAIR Website |  Contact us |  Feedback

Disclaimer: NISCAIR assumes no responsibility for the statements and opinions advanced by contributors. The editorial staff in its work of examining papers received for publication is helped, in an honorary capacity, by many distinguished engineers and scientists.

CC License Except where otherwise noted, the Articles on this site are licensed under Creative Commons License: CC Attribution-Noncommercial-No Derivative Works 2.5 India

Copyright © 2012 The Council of Scientific and Industrial Research, New Delhi. All rights reserved.

Powered by DSpace Copyright © 2002-2007 MIT and Hewlett-Packard | Compliant to OAI-PMH V 2.0

Home Page Total Visits: 556385 since 06-Feb-2009  Last updated on 15-Jul-2014Webmaster: nopr@niscair.res.in