Possible conduction mechanisms in coconut-shell activated carbon

Citation

W. Yusoff, W. Mohamad Daud and Badri, M. and Hashim, Mansor (1990) Possible conduction mechanisms in coconut-shell activated carbon. Journal of Applied Physics, 67 (4). pp. 1915-1917. ISSN 0021-8979; ESSN: 1089-7550

Abstract

This work reports on the result of electrical conductivity measurements carried out on coconut-shell activated carbon. The results suggest that the charge carriers moved by variable-range hopping below 200 K, by hopping among localized energy states between 200 K and 385 K, and by percolation through energy states close to the mobility edge above 385 K. In the latter two conduction processes, significant additional frequency-dependent contributions to the conductivity were observed and are tentatively attributed to polarization of unremovable lignin and/or ionic impurities. These explanations are based on the present trends of the electrical transport theory for amorphous semiconductors.

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Additional Metadata

Item Type:	Article
Divisions:	Faculty of Science and Environmental Studies
Publisher:	American Institute of Physics
Keywords:	Coconut-shell; Activated carbon
Depositing User:	Azhar Abdul Rahman
Date Deposited:	23 Sep 2015 01:11
Last Modified:	23 Sep 2015 01:11
URI:	http://psasir.upm.edu.my/id/eprint/39903
Statistic Details:	View Download Statistic

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