Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
9567354 | Applied Surface Science | 2005 | 6 Pages |
Abstract
ZnO epitaxial thin films could be formed by oxidation of ZnS epitaxial thin films deposited on Si substrates by electron-beam evaporation. The orientation relation of the ZnO film was (0 0 0 2), [1 1 â2 0]ZnO//( 1 1 1), [1 â1 0]Si. The ZnS films were oxidized from its surface toward the surface of the Si substrate gradually. The ZnS film with a thickness of about 100 nm was completely changed to ZnO by annealing at 720 °C for 10 min in O2 atmosphere. By excess annealing, longer than 30 min, an intermediate layer was formed at the interface between the ZnO layer and Si(1 1 1) substrate. Exciton emission with a peak at 3.27 eV from ZnO became dominant and visible emission due to oxygen vacancy in ZnO disappeared by the annealing of the film at 800 °C for 5 h in O2 flow.
Keywords
Related Topics
Physical Sciences and Engineering
Chemistry
Physical and Theoretical Chemistry
Authors
Y. Nakanishi, A. Miyake, H. Tatsuoka, H. Kominami, H. Kuwabara, Y. Hatanaka,