Chauhan, Gayatri and Srivastava, Ritu and Kumar, Arunandan and Rana, Omwati and Srivastava, P. C. and Kamalasanan, M. N. (2012) Dependence of charge carrier mobility of 4,4 ',4 ''-tris (N-3-methylphenyl-N-phenylamino)triphenylamine on doping concentration of tetrafluoro-tetracyano-quinodimethane. Organic Electronics, 13 (3). pp. 394-398. ISSN 1566-1199

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Abstract

Electrical transport of pure and tetrafluoro-tetracyano-quinodimethane doped 4,4 ',4 ''-tris(N-3-methylphenyl-N-phenylamino)triphenylamine (m-MTDATA) films have been studied at various temperatures and doping concentrations. Pure films show space charge limited conduction with field and temperature dependent mobility. The J-V characteristics of doped m-MTDATA were ohmic at low voltages due to thermally released carriers from dopant states. At higher voltages the current density increases nonlinearly due to field dependent mobility and carrier concentration thereby filling of tail states of HOMO of the host. The conductivity of doped films were analysed using the Unified Gaussian Disorder Model (UGDM). The carrier concentration obtained from the fitting show a non-linear dependence on doping concentration which may be due to a combined effect of thermally activated carrier generation and increased carrier mobility.

Item Type:	Article
Additional Information:	Copyright for this article belongs to M/s Elsevier.
Subjects:	Materials Science Applied Physics/Condensed Matter
Divisions:	UNSPECIFIED
Depositing User:	Users 27 not found.
Date Deposited:	07 Feb 2020 10:26
Last Modified:	07 Feb 2020 10:26
URI:	http://npl.csircentral.net/id/eprint/3652

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