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Effect of y-radiation on the Conduction Mechanism of Thermal Vacuum Deposited Copper Phthalocyanine Thin Films

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conference contribution
posted on 2012-09-28, 14:06 authored by Arousian Arshak, S.M. Zleetni, Khalil Arshak, John A. Harris
The dosimetry properties of thermally evaporated Copper Phthalocyanine (CuPc) thin films were investigated. The conduction mechanism of the asdeposited films was found to be space-charge-limited and their relative permittivity was within the range reported by others [l, 2, 3, 41. The Poole-Frenkel effect became more dominant for the irradiated samples and they displayed large increase in permittivity and colour centre density, although the energies of their optical band gap and trapping levels did not change. The observed linear relationship between the absorbance at 615 nrn and the y-radiation doses validated the use of CuPc as an optical sensor dosimeter especially for low radiation doses. Samples showed a higher radiation tolerance after being annealed for one hour at a temperature of only 323 K. Annealing also restored their initial electrical and optical properties.

History

Publication

Nanotechnology, 2001. IEEE-NANO 2001.;pp. 238-242

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IEEE Computer Society

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peer-reviewed

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©2001 IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other users, including reprinting/ republishing this material for advertising or promotional purposes, creating new collective works for resale or redistribution to servers or lists, or reuse of any copyrighted components of this work in other works.

Language

English

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