Kumar, Pankaj and Kumar, Hemant and Chanda, Suresh and Jain, S. C. and Kumar, Vikram and Kumar, Vinod and Pant, R. P. and Tandon, R. P. (2008) Effect of CoFe magnetic nanoparticles on the hole transport in poly(2-methoxy, 5-(2-ethylhexiloxy) 1,4-phenylenevinylene). Journal of Physics D: Applied Physics, 41 (18). pp. 185104-1. ISSN 1361-6463

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Abstract

The effect of doping of CoFe magnetic nanoparticles (MNPs) on the hole transport in poly(2-methoxy,5-(2-ethylhexyloxy)-1,4-phenylenevinylene)(MEH-PPV) thin films has been investigated in the temperature range 280-120 K. Hole transport in MEH-PPV is found to be governed by space-charge-limited-conduction (SCLC) with exponential distribution of traps in energy space. Doping of CoFe MNPs in MEH-PPV reduces the hole mobility from 1 x 10(-5) to 6 x 10(-6) cm(2) V-1 s(-1) by introducing new trap sites causing their net density increase from 1 x 10(18) to 2.1 x 10(18) cm(-3), which is likely to result in balanced injection and efficient recombination of charge carriers to improve the performance of polymer light emitting diodes.

Item Type:	Article
Additional Information:	Copyright for this article belongs to M/S IOP PUBLISHING.
Subjects:	Physics
Divisions:	UNSPECIFIED
Depositing User:	Ms Neetu Chandra
Date Deposited:	06 Jan 2014 08:57
Last Modified:	06 Jan 2014 08:57
URI:	http://npl.csircentral.net/id/eprint/988

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