Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
7118754 | Materials Science in Semiconductor Processing | 2015 | 9 Pages |
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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Authors
AyÅe Yumak, Güven Turgut, Olfa Kamoun, Haci Ozisik, Engin Deligoz, Petya Petkova, Refka Mimouni, Karem Boubaker, Mosbah Amlouk, Souraya Goumri-Said,