NISCAIR Online Periodicals Repository

NISCAIR ONLINE PERIODICALS REPOSITORY (NOPR)  >
NISCAIR PUBLICATIONS >
Research Journals >
Indian Journal of Engineering and Materials Sciences (IJEMS) >
IJEMS Vol.11 [2004] >
IJEMS Vol.11(6) [December 2004] >


Title: AC impedance studies on the molecular semiconductors based on aromatic diamines-iodine charge-transfer complexes
Authors: Gupta, R K
Singh, R A
Issue Date: Dec-2004
Publisher: CSIR
IPC CodeInt. Cl.7 H03H 9/00, H01L
Abstract: Molecular semiconductors based on charge-transfer complexes of benzidine, o-olidine and N, N'-diphenylbenzidine with iodine having different mole ratios have been prepared and characterized by thermal, spectral and electrical methods. The thermal decomposition behaviour of these materials indicate that they are thermally stable up to 130°C and then proceed to stoichiometric weight loss corresponding to iodine and aromatic diamines respectively. The electrical conductivity has its highest value for N, N'-diphenylbenzidine-iodine complexes and lowest for benzidine-iodine complexes which may be due to more extensive conjugation of radical cation in the former than in the later. Impedance studies show (RC)(RC), R (RC) and (RC) equivalent circuit for benzidine, o-tolidine and N, N'-diphenylbenzidine-iodine complexes respectively. The electrical data have been discussed in light of dynamic bond percolation model in which the distribution, density and availability of potential hopping sites change as a result of electronic and structural changes in the material.
Page(s): 505-510
ISSN: 0975-1017 (Online); 0971-4588 (Print)
Source:IJEMS Vol.11(6) [December 2004]

Files in This Item:

File Description SizeFormat
IJEMS 11(6) 505-510.pdf198.12 kBAdobe PDFView/Open
 Current Page Visits: 523 
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: 585521 since 06-Feb-2009  Last updated on 17-Sep-2014Webmaster: nopr@niscair.res.in