Kumar, Hemant and Kumar, Pankaj and Bhardwaj, Ramil and Sharma, G. D. and Venkatesu, P. (2012) Space charge limited hole transport in evaporated thin films of alpha-H2Pc. Physica Scripta, 85 (3). 035806-035811. ISSN 0031-8949

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Abstract

Thin films of metal-free phthalocyanine (H2Pc) have been grown on different substrates via physical vapor deposition. The films grown at room temperature have been shown to have alpha-polymorph, which was converted into beta-phase when the films were subjected to thermal treatment at 608 K for 2 h. The phase transition was confirmed via extensive characterization of the treated and untreated films. This paper describes hole transport investigations in alpha-H2Pc thin films for which the samples were prepared in hole only configuration and current density-voltage (J-V) characteristics were studied at different temperatures for two different thicknesses of alpha-H2Pc. The investigations show that the hole transport in alpha-H2Pc is governed by space charge limited conduction with single-level traps in the energy space. The studies enabled us to calculate the hole mobility in H2Pc which was observed to be independent of temperature and electric field.

Item Type:	Article
Additional Information:	copyright for this article belongs to M/s IOP
Subjects:	Physics
Divisions:	UNSPECIFIED
Depositing User:	Users 27 not found.
Date Deposited:	19 Aug 2026 11:01
Last Modified:	19 Aug 2026 11:01
URI:	https://npl.csircentral.net/id/eprint/3422

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