Ac Conductivity Measurement of Cd_{5}Se_{95-x}Zn_{x} Chalcogenide Semiconductor Using Correlated Barrier Hopping Model

• Authors: Mohsin Ganaie , M. Zulfequar
• Languages of publication: EN

Abstracts

EN

Cd_{5}Se_{95-x}Zn_{x} (x=0, 2, 4, 6) chalcogenide semiconductors were prepared by conventional melt-quenching and were characterized by X-ray diffraction, scanning electron microscopy, and Fourier transform infrared studies. Ac conductivity of Cd_{5}Se_{95-x}Zn_{x} chalcogenide semiconductor has been investigated in the frequency range of 1 kHz-1 MHz and in the temperature range of 290-370 K. The analysis of the experimental results indicates that the ac conductivity is temperature, frequency and concentration dependent. Ac conductivity is found to obey the power law ω^{s} where s < 1. A strong dependence of ac conductivity and exponent s can be well interpreted in terms of correlated barrier hopping model. The maximum barrier height W_{m} were calculated from the results of dielectric loss according to the Guintini equation that agree with the theory of hopping of charge carriers over potential barrier as suggested by Elliot in case of chalcogenide semiconductors.

Keywords

EN

72.80.Ng; 77.22.-d

Discipline

• 77.22.-d: Dielectric properties of solids and liquids(for dielectric properties of tissues and organs, see 87.19.rf)
• 72.80.Ng: Disordered solids

• Publisher: Institute of Physics, Polish Academy of Sciences
• Journal: Acta Physica Polonica A
• Year: 2015
• Volume: 128
• Issue: 1
• Pages: 59-63

Dates

published

2015-7

received

2014-08-09

(unknown)

2015-05-14

Contributors

author

Mohsin Ganaie

• Department of Physics, Jamia Millia Islamia, New Delhi 110025, India

author

M. Zulfequar

• Department of Physics, Jamia Millia Islamia, New Delhi 110025, India

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Identifiers

DOI

10.12693/APhysPolA.128.59