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Multi-color broadband visible light source via GaN hexagonal annular structure
Multi-color and broadband visible emission was realized thorough the hexagonal annular structure of GaN. The annular structure fabricated by selective-area growth emitted purple, blue and green color-emission from the multi-facets. The hexagonal annular structure provided various sidewalls of {10[Im...
Autores principales: | , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
Nature Publishing Group
2014
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4076692/ https://www.ncbi.nlm.nih.gov/pubmed/24981889 http://dx.doi.org/10.1038/srep05514 |
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author | Ko, Young-Ho Song, Jie Leung, Benjamin Han, Jung Cho, Yong-Hoon |
author_facet | Ko, Young-Ho Song, Jie Leung, Benjamin Han, Jung Cho, Yong-Hoon |
author_sort | Ko, Young-Ho |
collection | PubMed |
description | Multi-color and broadband visible emission was realized thorough the hexagonal annular structure of GaN. The annular structure fabricated by selective-area growth emitted purple, blue and green color-emission from the multi-facets. The hexagonal annular structure provided various sidewalls of {10[Image: see text]1} and {11[Image: see text]2} semi-polar facets, and (0001) polar facet. From the cathodoluminescence study, the (0001) plane had the longest wavelength of 525 nm, and the {10[Image: see text]1} facet of 440 nm peak wavelength had longer wavelength emission than the {11[Image: see text]2} of 412 nm peak wavelength. The origin of longer wavelength emission of {10[Image: see text]1} was mostly due to high In-composition, as well as slightly larger well thickness, which means that {10[Image: see text]1} facet has higher In-incorporation efficiency. Various In-composition of each facet provided multi-color and broadband emission with the international commission on illumination (CIE) of (0.22, 0.45) and high emission efficiency. The hexagonal annular structure becomes building blocks for highly efficient broadband visible lighting sources. |
format | Online Article Text |
id | pubmed-4076692 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2014 |
publisher | Nature Publishing Group |
record_format | MEDLINE/PubMed |
spelling | pubmed-40766922014-07-02 Multi-color broadband visible light source via GaN hexagonal annular structure Ko, Young-Ho Song, Jie Leung, Benjamin Han, Jung Cho, Yong-Hoon Sci Rep Article Multi-color and broadband visible emission was realized thorough the hexagonal annular structure of GaN. The annular structure fabricated by selective-area growth emitted purple, blue and green color-emission from the multi-facets. The hexagonal annular structure provided various sidewalls of {10[Image: see text]1} and {11[Image: see text]2} semi-polar facets, and (0001) polar facet. From the cathodoluminescence study, the (0001) plane had the longest wavelength of 525 nm, and the {10[Image: see text]1} facet of 440 nm peak wavelength had longer wavelength emission than the {11[Image: see text]2} of 412 nm peak wavelength. The origin of longer wavelength emission of {10[Image: see text]1} was mostly due to high In-composition, as well as slightly larger well thickness, which means that {10[Image: see text]1} facet has higher In-incorporation efficiency. Various In-composition of each facet provided multi-color and broadband emission with the international commission on illumination (CIE) of (0.22, 0.45) and high emission efficiency. The hexagonal annular structure becomes building blocks for highly efficient broadband visible lighting sources. Nature Publishing Group 2014-07-01 /pmc/articles/PMC4076692/ /pubmed/24981889 http://dx.doi.org/10.1038/srep05514 Text en Copyright © 2014, Macmillan Publishers Limited. All rights reserved http://creativecommons.org/licenses/by-nc-nd/4.0/ This work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivs 4.0 International License. The images or other third party material in this article are included in the article's Creative Commons license, unless indicated otherwise in the credit line; if the material is not included under the Creative Commons license, users will need to obtain permission from the license holder in order to reproduce the material. To view a copy of this license, visit http://creativecommons.org/licenses/by-nc-nd/4.0/ |
spellingShingle | Article Ko, Young-Ho Song, Jie Leung, Benjamin Han, Jung Cho, Yong-Hoon Multi-color broadband visible light source via GaN hexagonal annular structure |
title | Multi-color broadband visible light source via GaN hexagonal annular structure |
title_full | Multi-color broadband visible light source via GaN hexagonal annular structure |
title_fullStr | Multi-color broadband visible light source via GaN hexagonal annular structure |
title_full_unstemmed | Multi-color broadband visible light source via GaN hexagonal annular structure |
title_short | Multi-color broadband visible light source via GaN hexagonal annular structure |
title_sort | multi-color broadband visible light source via gan hexagonal annular structure |
topic | Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4076692/ https://www.ncbi.nlm.nih.gov/pubmed/24981889 http://dx.doi.org/10.1038/srep05514 |
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