AlGaInP Red LEDs with Hollow Hemispherical Polystyrene Arrays

A hollow hemispherical polystyrene (HHPS) was fabricated to reduce total internal reflection in AlGaInP-based LEDs. At an injection current of 350 mA, the external quantum efficiencies of LED-I, LED-II, LED-III, and LED-IV are 20.92%, 24.65%, 27.28%, and 33.77% and the wall-plug efficiencies are 17....

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Autores principales: Cheng, Wen-Ching, Huang, Shih-Yung, Chen, Yi-Jiun, Wang, Chia-Sheng, Lin, Hoang Yan, Wu, Tzong-Ming, Horng, Ray-Hua
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Nature Publishing Group UK 2018
Materias:
Article
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5772439/
https://www.ncbi.nlm.nih.gov/pubmed/29343786
http://dx.doi.org/10.1038/s41598-018-19405-y
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author Cheng, Wen-Ching
Huang, Shih-Yung
Chen, Yi-Jiun
Wang, Chia-Sheng
Lin, Hoang Yan
Wu, Tzong-Ming
Horng, Ray-Hua
author_facet Cheng, Wen-Ching
Huang, Shih-Yung
Chen, Yi-Jiun
Wang, Chia-Sheng
Lin, Hoang Yan
Wu, Tzong-Ming
Horng, Ray-Hua
author_sort Cheng, Wen-Ching
collection PubMed
description A hollow hemispherical polystyrene (HHPS) was fabricated to reduce total internal reflection in AlGaInP-based LEDs. At an injection current of 350 mA, the external quantum efficiencies of LED-I, LED-II, LED-III, and LED-IV are 20.92%, 24.65%, 27.28%, and 33.77% and the wall-plug efficiencies are 17.11%, 20%, 22.5%, and 27.33%, respectively. The enhanced performance is attributed to the light output power enhancement through the surface roughness, microlens-liked PS hemisphere, and scatter-liked HHPS array. In this paper, the rigorous coupled wave analysis (RCWA) numerical method was also conducted to demonstrate the HHPS array effectively enlarge the effective light cone.
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spelling pubmed-57724392018-01-26 AlGaInP Red LEDs with Hollow Hemispherical Polystyrene Arrays Cheng, Wen-Ching Huang, Shih-Yung Chen, Yi-Jiun Wang, Chia-Sheng Lin, Hoang Yan Wu, Tzong-Ming Horng, Ray-Hua Sci Rep Article A hollow hemispherical polystyrene (HHPS) was fabricated to reduce total internal reflection in AlGaInP-based LEDs. At an injection current of 350 mA, the external quantum efficiencies of LED-I, LED-II, LED-III, and LED-IV are 20.92%, 24.65%, 27.28%, and 33.77% and the wall-plug efficiencies are 17.11%, 20%, 22.5%, and 27.33%, respectively. The enhanced performance is attributed to the light output power enhancement through the surface roughness, microlens-liked PS hemisphere, and scatter-liked HHPS array. In this paper, the rigorous coupled wave analysis (RCWA) numerical method was also conducted to demonstrate the HHPS array effectively enlarge the effective light cone. Nature Publishing Group UK 2018-01-17 /pmc/articles/PMC5772439/ /pubmed/29343786 http://dx.doi.org/10.1038/s41598-018-19405-y Text en © The Author(s) 2018 Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/.
spellingShingle Article
Cheng, Wen-Ching
Huang, Shih-Yung
Chen, Yi-Jiun
Wang, Chia-Sheng
Lin, Hoang Yan
Wu, Tzong-Ming
Horng, Ray-Hua
AlGaInP Red LEDs with Hollow Hemispherical Polystyrene Arrays
title AlGaInP Red LEDs with Hollow Hemispherical Polystyrene Arrays
title_full AlGaInP Red LEDs with Hollow Hemispherical Polystyrene Arrays
title_fullStr AlGaInP Red LEDs with Hollow Hemispherical Polystyrene Arrays
title_full_unstemmed AlGaInP Red LEDs with Hollow Hemispherical Polystyrene Arrays
title_short AlGaInP Red LEDs with Hollow Hemispherical Polystyrene Arrays
title_sort algainp red leds with hollow hemispherical polystyrene arrays
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5772439/
https://www.ncbi.nlm.nih.gov/pubmed/29343786
http://dx.doi.org/10.1038/s41598-018-19405-y
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