Thermally stimulated currents in CdS film produced by ultrasonic spray pyrolysis method

Polycrystalline CdS films have been deposited by ultrasonic spray pyrolysis method. The electrical properties of the sample have been studied by means of an analysis based on the thermally stimulated current (TSC) spectrum at a heating rate of 0.06 K s-1 in the temperature range of 40-250 K. In orde...

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Bibliographic Details
Published in:Journal of physics. Condensed matter 2008-02, Vol.20 (5), p.055216-055216 (5)
Main Authors: Aybek, Ahmet Senol, Kul, Metin, Turan, Evren, Zor, Muhsin, Gedik, Elif
Format: Article
Language:English
Subjects:
Charge carriers: generation, recombination, lifetime, and trapping
Condensed matter: electronic structure, electrical, magnetic, and optical properties
Conductivity phenomena in semiconductors and insulators
Electronic transport in condensed matter
Exact sciences and technology
Physics
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Summary:Polycrystalline CdS films have been deposited by ultrasonic spray pyrolysis method. The electrical properties of the sample have been studied by means of an analysis based on the thermally stimulated current (TSC) spectrum at a heating rate of 0.06 K s-1 in the temperature range of 40-250 K. In order to evaluate the trap parameters of the sample, we have used curve fitting and initial rise methods. The TSC spectrum indicates that the sample has seven overlapped peaks located at levels in the range of 0.021-0.138 eV below the conduction band. The values of the frequency factor, the capture cross section and the concentration of the traps have been determined from the observed peaks in the TSC spectrum of the sample.
ISSN:0953-8984
1361-648X
DOI:10.1088/0953-8984/20/5/055216