Bajpai, Manisha and Kumari, Kusum and Srivastava, Ritu and Kamalasanan, M. N. and Tiwari, R. S. and Chanda, Suresh (2010) Electric field and temperature dependence of hole mobility in electroluminescent PDY 132 polymer thin films. Solid State Communications, 150 (13-14). pp. 581-584. ISSN 0038-1098

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Abstract

The current density–voltage (J–V) behavior of polymer PDY 132 thin films has been investigated in hole-only device configuration, viz., ITO/poly(ethylene-dioxthiophene):polystyrenesulphonate (PEDOT:PSS)/PDY 132/Au, as a function of polymer (PDY) film thickness (150 nm and 200 nm) and temperature (290–90 K). Hole current density was found to follow two distinct modes of conduction, (i) low electric field region I: ohmic conduction where slope ∼1, and (ii) intermediate and high electric field region II: non ohmic conduction where slope ∼2. Region I has been attributed to the transport of intrinsic background charge carriers while region II has been found to be governed by space charge limited currents (SCLC) with hole mobility strongly dependent on electric field and temperature. The respective hole transport parameters determined from the SCLC regime, μp0 is View the MathML source, μp(0,T) is View the MathML source, and zero field activation energy (Δ0) of 0.48 eV is obtained.

Item Type:	Article
Additional Information:	Copyright for this article belongs to M/s Elsevier B.V.
Uncontrolled Keywords:	Polymer; SCLC method; Charge transport; Hole mobility
Subjects:	Physics
Divisions:	UNSPECIFIED
Depositing User:	Ms Neetu Chandra
Date Deposited:	11 Apr 2012 08:03
Last Modified:	11 Apr 2012 08:03
URI:	http://npl.csircentral.net/id/eprint/113

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