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Publication Details
AFRICAN RESEARCH NEXUS
SHINING A SPOTLIGHT ON AFRICAN RESEARCH
materials science
Properties of cu-doped low resistive ZnSe films deposited by two-sourced evaporation
Vacuum, Volume 80, No. 4, Year 2005
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Description
Two-sourced evaporation technique is used to prepare hard ZnSe films by controlling the evaporation rates of both Zn and Se at substrate temperature of 400 °C. The films are doped with Cu by immersion in the Cu(NO 3)2-H2O solution for different periods of time. The XRD has not shown a drastic change in the film structure while the electrical resistivity of the deposited film dropped from 109 Ω-cm to about 1.6 Ω-cm for solution immersed films after heat treatment. Optical properties of deposited and doped films, such as film thickness, absorption coefficient and optical band gap have been calculated from the normal transmission spectra in the range of 300-2200 nm. The optical results show a decrease of the transmission and an increase of the refractive index and a slight shift in the optical band gap. Chemical composition of the Cu is determined by using absorption of immersed films. The composition of Cu is also compared with the composition detected by electron microprobe analyzer (EMPA). © 2005 Elsevier Ltd. All rights reserved.
Authors & Co-Authors
Malik, Zulfiqar Ali
Pakistan, Islamabad
Quaid-i-azam University
Aqili, Akram K.S.
Jordan, Zarqa
Hashemite University
Maqsood, Asghari
Pakistan, Islamabad
Quaid-i-azam University
J. Akhtar, S. M.
Pakistan, Islamabad
Optics Laboratories
Statistics
Citations: 34
Authors: 4
Affiliations: 3
Identifiers
Doi:
10.1016/j.vacuum.2005.06.004
ISSN:
0042207X