Stability and morphology-dependence of Sc3+ ions incorporation and substitution kinetics within ZnO host lattice |
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| Affiliation: | 1. Physics Department, Faculty of Arts and Sciences, Marmara University, 34722 Göztepe, Istanbul, Turkey;2. Department of Basic Sciences, Faculty of Science, Erzurum Technical University, 25240 Erzurum, Turkey;3. Unité de physique des dispositifs à semi-conducteurs, Tunis EL MANAR University, Tunisia;4. Aksaray University, Education Faculty, Department of BOTE, 68100 Aksaray, Turkey;5. Aksaray University, Department of Physics, 68100 Aksaray, Turkey;6. Shumen University “Konstantin Preslavsky”, 115 Universitetska Street, 9712 Shumen, Bulgaria;7. School of Chemistry & Biochemistry, Georgia Institute of Technology, Atlanta, GA 30332-0400, USA;1. Department of Physics, Faculty of Sciences, Gazi University, Ankara, Turkey;2. Department of Opticianry, Vocational school of Medical Sciences, Turgut Özal University, Ankara, Turkey;3. Department of Chemistry, Chemistry Education Department, Gazi University, Ankara, Turkey;1. School of Renewable Energy Technology, Naresuan University, Phitsanulok 65000, Thailand;2. Department of Chemistry, Faculty of Science, Chiang Mai University, Chiang Mai 50200, Thailand;3. Department of Physics and Materials Science, Faculty of Science, Chiang Mai University, Chiang Mai 50200, Thailand;4. Materials Science Research Center, Faculty of Science, Chiang Mai University, Chiang Mai 50200, Thailand |
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| Abstract: | In this study, sol–gel spin coating route was carried out to prepare Scandium doped ZnO thin films with different controlled percentage (1–7%). Particularly, it has been demonstrated, through original conjoint morphological-structural and optical investigations, that some interesting physical properties were induced. Indeed, X-ray diffraction (XRD) analysis shows that (002) preferential crystalline plane for Sc doped ZnO films was kept along with ZnO hexagonal würtzite structure, although Sc doping seemed to cause a decrease in crystallinity. Except for 1 at% Sc doping ratio, optical band gap changes reversely with Urbach energy with a decrease in optical gap and a broadening of the absorption tail. Ab-initio calculations of lattice dynamical properties outlined additional strong hybridization between Sc and O atoms and show the stability of Scandium doped ZnO. |
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| Keywords: | Zinc oxide Scandium Optical properties Single oscillator model Urbach tailing Dielectric constant |
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