Electrical transport properties of semiconducting lithium molybdate glass nanocomposites

Bhattacharya, S. ; Ghosh, A. (2007) Electrical transport properties of semiconducting lithium molybdate glass nanocomposites The Journal of Chemical Physics, 127 (19). 194709_1-194709_6. ISSN 0021-9606

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Official URL: http://jcp.aip.org/resource/1/jcpsa6/v127/i19/p194...

Related URL: http://dx.doi.org/10.1063/1.2802383

Abstract

We have reported the formation of lithium molybdate glass nanocomposites embedded with lithium molybdate nanophases from the X-ray diffraction and transmission electron microscopic studies. We have investigated the dc electrical conductivity in a wide temperature range for these glass nanocomposites, which exhibit semiconducting behavior. We have analyzed the dc electrical data in the light of polaronic conduction models of Mott and Schnakenberg. We have also studied ac electrical conductivity of these glass nanocomposites in wide temperature and frequency ranges. The experimental ac results have been analyzed with reference to various theoretical models based on quantum-mechanical tunneling and hopping over the barrier. We have observed that the temperature dependence of the dc conductivity is consistent with the polaronic hopping models, while the temperature and frequency dependence of the ac conductivity is consistent with the polaronic tunneling models.

Item Type:Article
Source:Copyright of this article belongs to American Institute of Physics.
Keywords:Amorphous Semiconductors; Electrical Conductivity; Lithium Compounds; Nanocomposites; Polarons; Transmission Electron Microscopy; X-ray Diffraction
ID Code:72825
Deposited On:29 Nov 2011 13:25
Last Modified:29 Nov 2011 13:25

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