Khan, Mohd Taukeer and Kaur, Amarjeet and Dhawan, S. K. and Chand, Suresh (2011) Hole transport mechanism in organic/inorganic hybrid system based on in-situ grown cadmium telluride nanocrystals in poly(3-hexylthiophene). Journal of Applied Physics, 109 (11). 114509 . ISSN 1089-7550

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Abstract

The present manuscript demonstrates the hole transport mechanism in an organic/inorganic hybrid system based on in-situ grown cadmium telluride (CdTe) nanocrystals in a poly(3-hexylthiophene) (P3HT) matrix. The increase of hole current in the hybrid system is correlated with the formation of a host-guest (P3HT-CdTe) charge transfer complex duly supported by photoluminescence quenching. The hole transport mechanism in P3HT is governed by a space charge limited current with temperature, carrier density, and field dependent mobility. Incorporation of CdTe nanocrystals in a polymer matrix results in enhancement in the value of trap density Hb from 2.8 Â 1018 to 5.0 Â 1018 cmÀ3 and reduction in activation energies from 52 meV to 11 meV. At high trap density, trap potential wells start overlapping; this results in decrease of activation energies.

Item Type:	Article
Additional Information:	Copyright for this article belongs to M/s American Institute Of Physics.
Subjects:	Applied Physics/Condensed Matter Physics
Divisions:	UNSPECIFIED
Depositing User:	Mr. Abhishek Yadav
Date Deposited:	27 Dec 2012 07:52
Last Modified:	27 Dec 2012 07:52
URI:	http://npl.csircentral.net/id/eprint/932

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