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AlHoceima City

Important Dates

Abstract due :
March, 30th , 2017
April, 9th , 2017

Abstract acceptance :
Between March, 30th and April 10th
Paper submission deadline :
April, 15th, 2017
Acceptance notification :
April, 20th, 2017
Final version due :
April, 25th, 2017
ICCEM 2017 :
May, 11th-12th , 2017
Paper submission deadline :
May, 20th, 2017
Acceptance notification :
May, 25th, 2017
Final version due :
May, 30th, 2017

Local Organizing Chairs

Pr. Mohamed Salahdine ELYOUBI
( Director, ENSAH )
Pr. Khadija HABOUBI
( Vice - Director, ENSAH )

ICCEM'2017 contact

Mohammed First University
National School of Applied Sciences (ENSAH), Al Hoceima, Morocco

Mail: iccem2017alhoceima@gmail.com
Phone: +212(0)539805714
FAX: +212(0)539805713

Pr. Shehdeh Jodeh

Effects of Ion Implantation Doping Accompanying Heat Treatment on the Electrical Properties for Prestine and Poly(acrylonitrile).
Shehdeh Jodeh*,Department of Chemistry, An-Najah National University, P.O. Box 7, Nablus, Palestine, Tel: 970-599590-498; Fax: 970-9-2345982; E-mail:sjodeh@najah.edu.

Heat treatment of polyacrylonitrile (PAN) leads to products with semiconductor to metal-like conductivities. The electrical properties of these-materials are further modified by ion implantation. It is noted that the conductivity (~10-7(Ω cm)-1 of heat treated PAN at 435 ºC (PAN435) increases upon ion implantation with arsenic reaching a maximum value of 1.4 x 10-1 (Ω cm)-1 at a dose of 5 x 1016 ion/cm2 and energy of 200 KeV. On the other hand, ion implantation of the more conducting heat treated PAN at 750 ºC (PAN750) leads to a decrease in the electrical conductivity of the material. The data also indicate that the decrease in conductivity observed after implantation of PAN750 is due to the breakup of the graphite-like extended electronic states. The temperature dependence of conductivity provided further information on the structures of the pyrolyzed and of the ion implanted samples. Whereas the conductivity temperature behavior of PAN750 is consistent with the Cohen-Jortner model for transport in inhomogeneous and disordered solids, the ion implanted sample (PAN750I) displays a behavior which can be described most adequately in terms of a variable range hopping conduction mechanism.

Keywords: implantation, polyacrylonitrile, conductivity, thermal