Abstract
We report Fe3+-related emission in ion-implanted ZnO single crystals. Iron ions were implanted at room temperature with 100 keV and a fluence of 1×1016 Fe+/cm2, and were submitted to annealing treatments in vacuum and in air. After implantation, the damage raises the minimum yield (χmin) from 2% to 50%. Annealing in an oxidizing atmosphere leads to a reduction of the implantation damage, which is fully recovered after annealing at 1050 °C with a χmin∼3% in the implanted region. With extrinsic excitation, red Fe-related emission is observed at low temperatures. The intensity is dependent on the annealing conditions. For samples annealed in air, the luminescence can be detected up to 120 K. When a comparison is made between unimplanted and post-implanted annealed samples, noticeable changes on near-band-edge and deep-level photoluminescence spectra are observed. A thermally populated structured green emission could be observed in the sample annealed in air, as shown by the temperature-dependent photoluminescence excitation studies.
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Dates
Type | When |
---|---|
Created | 22 years, 3 months ago (May 22, 2003, 6:01 p.m.) |
Deposited | 1 year, 6 months ago (Feb. 6, 2024, 4:02 a.m.) |
Indexed | 1 year, 6 months ago (Feb. 6, 2024, 4:40 a.m.) |
Issued | 22 years, 2 months ago (June 1, 2003) |
Published | 22 years, 2 months ago (June 1, 2003) |
Published Print | 22 years, 2 months ago (June 1, 2003) |
@article{Monteiro_2003, title={Photoluminescence and damage recovery studies in Fe-implanted ZnO single crystals}, volume={93}, ISSN={1089-7550}, url={http://dx.doi.org/10.1063/1.1573341}, DOI={10.1063/1.1573341}, number={11}, journal={Journal of Applied Physics}, publisher={AIP Publishing}, author={Monteiro, T. and Boemare, C. and Soares, M. J. and Rita, E. and Alves, E.}, year={2003}, month=jun, pages={8995–9000} }