Singh, Ramadhar and Singh, Rajiv K. and Kumar, Jitendra and Kant, Rama and Kumar, Vikram (2010) The origin of DC electrical conduction and dielectric relaxation in pristine and doped poly(3-hexylthiophene) films. Journal of Polymer Science Part B: Polymer Physics , 48 (10). pp. 1047-1053. ISSN 1099-0488

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Abstract

We present here the evidence for the origin of dc electrical conduction and dielectric relaxation in pristine and doped poly(3-hexylthiophene) (P3HT) films. P3HT has been synthesized and purified to obtain pristine P3HT polymer films. P3HT films are chemically doped to make conducting P3HT films with different conductivity level. Temperature (77–350 K) dependent dc conductivity (σdc) and dielectric constant (ε′(ω)) measurements on pristine and doped P3HT films have been conducted to evaluate dc and ac electrical conduction parameters. The relaxation frequency (fR) and static dielectric constant (ε0) have been estimated from dielectric constant measurements. A correlation between dc electrical conduction and dielectric relaxation data indicates that both dc and ac electrical conductions originate from the same hopping process in this system.

Item Type:	Article
Additional Information:	Copyright for this article belongs to M/s Wiley-Blackwell
Uncontrolled Keywords:	Activation energy; Charge transport; Conjugated polymers; DC conductivity; Dielectric constant; Dielectric properties; Dielectric relaxation; Hopping mechanism; Poly(3-hexylthiophene)
Subjects:	Polymer Science
Divisions:	UNSPECIFIED
Depositing User:	Ms Neetu Chandra
Date Deposited:	23 Jul 2012 07:26
Last Modified:	23 Jul 2012 07:26
URI:	http://npl.csircentral.net/id/eprint/369

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