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Enhancing GaN LED Efficiency through Nano-Gratings and Standing Wave Analysis

Based on our recent work, this paper reviews our theoretical study on gallium nitride (GaN) light-emitting-diode (LED). The focus of the paper is to improve LED light extraction efficiency through various nano-grating designs. The gratings can be designed at different locations, such as at the top,...

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Detalles Bibliográficos
Autores principales: Jin, Xiaomin, Trieu, Simeon, Chavoor, Gregory James, Halpin, Gabriel Michael
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2018
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6316827/
https://www.ncbi.nlm.nih.gov/pubmed/30551637
http://dx.doi.org/10.3390/nano8121045
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author Jin, Xiaomin
Trieu, Simeon
Chavoor, Gregory James
Halpin, Gabriel Michael
author_facet Jin, Xiaomin
Trieu, Simeon
Chavoor, Gregory James
Halpin, Gabriel Michael
author_sort Jin, Xiaomin
collection PubMed
description Based on our recent work, this paper reviews our theoretical study on gallium nitride (GaN) light-emitting-diode (LED). The focus of the paper is to improve LED light extraction efficiency through various nano-grating designs. The gratings can be designed at different locations, such as at the top, the middle, and the bottom, on the LED. They also can be made of different materials. In this study, we first present a GaN LED error-grating simulation model. Second, nano Indium Tin Oxide (ITO) top gratings are studied and compared with conventional LED (CLED) using standing wave analysis. Third, we present results related to a patterned sapphire substrate (PSS), SiO(2) Nanorod array (NR), and Ag bottom reflection layer. Finally, we investigate the nano-top ITO grating performance over different wavelengths to validate our design simulation, which focusing on a single wavelength of 460 nm.
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spelling pubmed-63168272019-01-10 Enhancing GaN LED Efficiency through Nano-Gratings and Standing Wave Analysis Jin, Xiaomin Trieu, Simeon Chavoor, Gregory James Halpin, Gabriel Michael Nanomaterials (Basel) Article Based on our recent work, this paper reviews our theoretical study on gallium nitride (GaN) light-emitting-diode (LED). The focus of the paper is to improve LED light extraction efficiency through various nano-grating designs. The gratings can be designed at different locations, such as at the top, the middle, and the bottom, on the LED. They also can be made of different materials. In this study, we first present a GaN LED error-grating simulation model. Second, nano Indium Tin Oxide (ITO) top gratings are studied and compared with conventional LED (CLED) using standing wave analysis. Third, we present results related to a patterned sapphire substrate (PSS), SiO(2) Nanorod array (NR), and Ag bottom reflection layer. Finally, we investigate the nano-top ITO grating performance over different wavelengths to validate our design simulation, which focusing on a single wavelength of 460 nm. MDPI 2018-12-13 /pmc/articles/PMC6316827/ /pubmed/30551637 http://dx.doi.org/10.3390/nano8121045 Text en © 2018 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/).
spellingShingle Article
Jin, Xiaomin
Trieu, Simeon
Chavoor, Gregory James
Halpin, Gabriel Michael
Enhancing GaN LED Efficiency through Nano-Gratings and Standing Wave Analysis
title Enhancing GaN LED Efficiency through Nano-Gratings and Standing Wave Analysis
title_full Enhancing GaN LED Efficiency through Nano-Gratings and Standing Wave Analysis
title_fullStr Enhancing GaN LED Efficiency through Nano-Gratings and Standing Wave Analysis
title_full_unstemmed Enhancing GaN LED Efficiency through Nano-Gratings and Standing Wave Analysis
title_short Enhancing GaN LED Efficiency through Nano-Gratings and Standing Wave Analysis
title_sort enhancing gan led efficiency through nano-gratings and standing wave analysis
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6316827/
https://www.ncbi.nlm.nih.gov/pubmed/30551637
http://dx.doi.org/10.3390/nano8121045
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AT halpingabrielmichael enhancingganledefficiencythroughnanogratingsandstandingwaveanalysis