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On the phenomenon of large photoluminescence red shift in GaN nanoparticles
We report on the observation of broad photoluminescence wavelength tunability from n-type gallium nitride nanoparticles (GaN NPs) fabricated using the ultraviolet metal-assisted electroless etching method. Transmission and scanning electron microscopy measurements performed on the nanoparticles reve...
Autores principales: | , , , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
Springer
2013
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3733736/ https://www.ncbi.nlm.nih.gov/pubmed/23902709 http://dx.doi.org/10.1186/1556-276X-8-342 |
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author | Slimane, Ahmed Ben Najar, Adel Elafandy, Rami San-Román-Alerigi, Damián P Anjum, Dalaver Ng, Tien Khee Ooi, Boon S |
author_facet | Slimane, Ahmed Ben Najar, Adel Elafandy, Rami San-Román-Alerigi, Damián P Anjum, Dalaver Ng, Tien Khee Ooi, Boon S |
author_sort | Slimane, Ahmed Ben |
collection | PubMed |
description | We report on the observation of broad photoluminescence wavelength tunability from n-type gallium nitride nanoparticles (GaN NPs) fabricated using the ultraviolet metal-assisted electroless etching method. Transmission and scanning electron microscopy measurements performed on the nanoparticles revealed large size dispersion ranging from 10 to 100 nm. Nanoparticles with broad tunable emission wavelength from 362 to 440 nm have been achieved by exciting the samples using the excitation power-dependent method. We attribute this large wavelength tunability to the localized potential fluctuations present within the GaN matrix and to vacancy-related surface states. Our results show that GaN NPs fabricated using this technique are promising for tunable-color-temperature white light-emitting diode applications. |
format | Online Article Text |
id | pubmed-3733736 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2013 |
publisher | Springer |
record_format | MEDLINE/PubMed |
spelling | pubmed-37337362013-08-06 On the phenomenon of large photoluminescence red shift in GaN nanoparticles Slimane, Ahmed Ben Najar, Adel Elafandy, Rami San-Román-Alerigi, Damián P Anjum, Dalaver Ng, Tien Khee Ooi, Boon S Nanoscale Res Lett Nano Express We report on the observation of broad photoluminescence wavelength tunability from n-type gallium nitride nanoparticles (GaN NPs) fabricated using the ultraviolet metal-assisted electroless etching method. Transmission and scanning electron microscopy measurements performed on the nanoparticles revealed large size dispersion ranging from 10 to 100 nm. Nanoparticles with broad tunable emission wavelength from 362 to 440 nm have been achieved by exciting the samples using the excitation power-dependent method. We attribute this large wavelength tunability to the localized potential fluctuations present within the GaN matrix and to vacancy-related surface states. Our results show that GaN NPs fabricated using this technique are promising for tunable-color-temperature white light-emitting diode applications. Springer 2013-07-31 /pmc/articles/PMC3733736/ /pubmed/23902709 http://dx.doi.org/10.1186/1556-276X-8-342 Text en Copyright ©2013 Slimane et al.; licensee Springer. http://creativecommons.org/licenses/by/2.0 This is an Open Access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/2.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. |
spellingShingle | Nano Express Slimane, Ahmed Ben Najar, Adel Elafandy, Rami San-Román-Alerigi, Damián P Anjum, Dalaver Ng, Tien Khee Ooi, Boon S On the phenomenon of large photoluminescence red shift in GaN nanoparticles |
title | On the phenomenon of large photoluminescence red shift in GaN nanoparticles |
title_full | On the phenomenon of large photoluminescence red shift in GaN nanoparticles |
title_fullStr | On the phenomenon of large photoluminescence red shift in GaN nanoparticles |
title_full_unstemmed | On the phenomenon of large photoluminescence red shift in GaN nanoparticles |
title_short | On the phenomenon of large photoluminescence red shift in GaN nanoparticles |
title_sort | on the phenomenon of large photoluminescence red shift in gan nanoparticles |
topic | Nano Express |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3733736/ https://www.ncbi.nlm.nih.gov/pubmed/23902709 http://dx.doi.org/10.1186/1556-276X-8-342 |
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