Electrical characterization of conducting polypyrrole by THz time-domain spectroscopy

Jeon, Tae-In and Grischkowsky, D and Mukherjee, AK and Menon, Reghu (2000) Electrical characterization of conducting polypyrrole by THz time-domain spectroscopy. In: Applied Physics Letters, 77 (16). pp. 2452-2454.

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Abstract

Using an optoelectronic THz beam system for THz time-domain spectroscopy (THz TDS), we have measured the absorption and index of refraction of a conducting polypyrrole film from low frequencies to 2.5 THz. From these measurements, the dc conductivity of 215/( \Omega cm) and the complex conductance were obtained over this frequency range. All of the results were well fit by Drude theory, which gives a carrier scattering time of only 12.6 fs, less than 1/10 that of the semiconductors, thereby illustrating the disorder and low mobility of the polymer.

Item Type:	Journal Article
Publication:	Applied Physics Letters
Publisher:	American Institute of Physics
Additional Information:	Copyright for this article belongs to American Institute of Physics (AIP).
Department/Centre:	Division of Physical & Mathematical Sciences > Physics
Date Deposited:	11 Apr 2005
Last Modified:	19 Sep 2010 04:18
URI:	http://eprints.iisc.ac.in/id/eprint/2988

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