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Cd doping of AlN via ion implantation studied with perturbed angular correlation
AlN with a wide bandgap of 6.2 eV is a promising candidate for ultraviolet light-emitting diodes and laser diodes. However, the production of the required p-type AlN is still challenging. As a possible dopant Cd was suggested among other Group II atoms (Be, Mg, and Zn). In this study the annealing c...
Autores principales: | , , , , , , |
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Lenguaje: | eng |
Publicado: |
2012
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Materias: | |
Acceso en línea: | https://dx.doi.org/10.1002/pssc.201100207 http://cds.cern.ch/record/1641253 |
_version_ | 1780934868017872896 |
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author | Kessler, Patrick Lorenz, Katharina Miranda, Sérgio MC Simon, R Correia, João Guilherme Johnston, Karl Vianden, Reiner |
author_facet | Kessler, Patrick Lorenz, Katharina Miranda, Sérgio MC Simon, R Correia, João Guilherme Johnston, Karl Vianden, Reiner |
author_sort | Kessler, Patrick |
collection | CERN |
description | AlN with a wide bandgap of 6.2 eV is a promising candidate for ultraviolet light-emitting diodes and laser diodes. However, the production of the required p-type AlN is still challenging. As a possible dopant Cd was suggested among other Group II atoms (Be, Mg, and Zn). In this study the annealing condition of implanted Cd in AlN was investigated with the method of the perturbed angular correlation (PAC). Therefore radioactive $^{117}$Cd or $^{111m}$Cd ions were implanted into thin AlN films on sapphire substrate with an energy of 30 keV and fluences in the range of 10$^{11}$ ions/cm$^{2}$. After thorough annealing with a proximity cap of the same material most of the Cd-probes occupy substitutional lattice sites and almost all implantation damage can be annealed. This results in a distinct frequency in the PAC spectra which increases with temperature. In contrast to the formation of an indium nitrogen-vacancy complex observed with the probe $^{111}$In on substitutional Al-sites no defects are bound to substitutional Cd impurities. |
id | cern-1641253 |
institution | Organización Europea para la Investigación Nuclear |
language | eng |
publishDate | 2012 |
record_format | invenio |
spelling | cern-16412532019-09-30T06:29:59Zdoi:10.1002/pssc.201100207http://cds.cern.ch/record/1641253engKessler, PatrickLorenz, KatharinaMiranda, Sérgio MCSimon, RCorreia, João GuilhermeJohnston, KarlVianden, ReinerCd doping of AlN via ion implantation studied with perturbed angular correlationCondensed MatterAlN with a wide bandgap of 6.2 eV is a promising candidate for ultraviolet light-emitting diodes and laser diodes. However, the production of the required p-type AlN is still challenging. As a possible dopant Cd was suggested among other Group II atoms (Be, Mg, and Zn). In this study the annealing condition of implanted Cd in AlN was investigated with the method of the perturbed angular correlation (PAC). Therefore radioactive $^{117}$Cd or $^{111m}$Cd ions were implanted into thin AlN films on sapphire substrate with an energy of 30 keV and fluences in the range of 10$^{11}$ ions/cm$^{2}$. After thorough annealing with a proximity cap of the same material most of the Cd-probes occupy substitutional lattice sites and almost all implantation damage can be annealed. This results in a distinct frequency in the PAC spectra which increases with temperature. In contrast to the formation of an indium nitrogen-vacancy complex observed with the probe $^{111}$In on substitutional Al-sites no defects are bound to substitutional Cd impurities.CERN-OPEN-2014-016oai:cds.cern.ch:16412532012-03-20 |
spellingShingle | Condensed Matter Kessler, Patrick Lorenz, Katharina Miranda, Sérgio MC Simon, R Correia, João Guilherme Johnston, Karl Vianden, Reiner Cd doping of AlN via ion implantation studied with perturbed angular correlation |
title | Cd doping of AlN via ion implantation studied with perturbed angular correlation |
title_full | Cd doping of AlN via ion implantation studied with perturbed angular correlation |
title_fullStr | Cd doping of AlN via ion implantation studied with perturbed angular correlation |
title_full_unstemmed | Cd doping of AlN via ion implantation studied with perturbed angular correlation |
title_short | Cd doping of AlN via ion implantation studied with perturbed angular correlation |
title_sort | cd doping of aln via ion implantation studied with perturbed angular correlation |
topic | Condensed Matter |
url | https://dx.doi.org/10.1002/pssc.201100207 http://cds.cern.ch/record/1641253 |
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