Please use this identifier to cite or link to this item:
http://hdl.handle.net/10773/5631
Title: | Optical and structural studies in Eu-implanted AlN films |
Author: | Peres, Marco Cruz, A. Soares, Manuel Neves, Armando Monteiro, Teresa Lorenz, K. Alves, E. |
Keywords: | AlN RE’s Ion implantation RBS/C PL |
Issue Date: | Dec-2006 |
Publisher: | Elsevier |
Abstract: | Eu ions were incorporated into AlN thin films using ion implantation, and the influence of the post-implant annealing ambient on structural and optical properties was investigated. Eu is incorporated into lattice sites which are slightly displaced from the substitutional Al sites. When compared with the as-implanted sample the near-substitutional ion fraction is reduced due to the thermal annealing in different atmospheres. The AlN crystal quality does not change with different annealing conditions, but sensitive defect-related emission bands are developed under different annealing temperatures. Eu3+ optical activation is detected for all the annealed samples. No spectral changes are observed for the shape of the intra- transition, suggesting that a similar site symmetry is preserved even when a slight displacement from the substitutitional site of the Eu3+ ions occurs. The role of the annealing conditions on the spectral position and thermal quenching of the transition is discussed. |
Peer review: | yes |
URI: | http://hdl.handle.net/10773/5631 |
DOI: | 10.1016/j.spmi.2006.07.031 |
ISSN: | 0749-6036 |
Appears in Collections: | DFis - Artigos |
Files in This Item:
File | Description | Size | Format | |
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SM.pdf | versão pdf do editor | 910.95 kB | Adobe PDF |
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