Design of a Yellow-Emitting Phosphor with Enhanced Red Emission via Valence State-control for Warm White LEDs Application

The phosphor-converted warm W-LED have being rapidly developed due to the stringent requirements of general illumination. Here, we utilized a strategy to synergistically enhance the red region and emission intensity of novel Eu-activated yellow-emitting LaSiO(2)N phosphors. This was realized by pred...

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Autores principales: Chen, Jian, Liu, Yangai, Mei, Lefu, Peng, Peng, Cheng, Qijin, Liu, Haikun
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Nature Publishing Group 2016
Materias:
Article
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4980616/
https://www.ncbi.nlm.nih.gov/pubmed/27510501
http://dx.doi.org/10.1038/srep31199
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author Chen, Jian
Liu, Yangai
Mei, Lefu
Peng, Peng
Cheng, Qijin
Liu, Haikun
author_facet Chen, Jian
Liu, Yangai
Mei, Lefu
Peng, Peng
Cheng, Qijin
Liu, Haikun
author_sort Chen, Jian
collection PubMed
description The phosphor-converted warm W-LED have being rapidly developed due to the stringent requirements of general illumination. Here, we utilized a strategy to synergistically enhance the red region and emission intensity of novel Eu-activated yellow-emitting LaSiO(2)N phosphors. This was realized by predicting optimum crystal structure, and governing the concentration of doping ions as well as preparation temperature. By using these straight-forward methods, we were able to vary the valence to enhance the red region and improve the quantum efficiency of LaSiO(2)N phosphor. The warm W-LED lamp fabricated with this red region enhanced LaSiO(2)N:Eu phosphor exhibited high CRI (Ra = 86), suitable CCT (5783 K) and CIE chromaticity (0.33, 0.36), indicating this synergistically enhanced strategy could be used for design of yellow-emitting phosphor materials to obtain warm W-LEDs.
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spelling pubmed-49806162016-08-19 Design of a Yellow-Emitting Phosphor with Enhanced Red Emission via Valence State-control for Warm White LEDs Application Chen, Jian Liu, Yangai Mei, Lefu Peng, Peng Cheng, Qijin Liu, Haikun Sci Rep Article The phosphor-converted warm W-LED have being rapidly developed due to the stringent requirements of general illumination. Here, we utilized a strategy to synergistically enhance the red region and emission intensity of novel Eu-activated yellow-emitting LaSiO(2)N phosphors. This was realized by predicting optimum crystal structure, and governing the concentration of doping ions as well as preparation temperature. By using these straight-forward methods, we were able to vary the valence to enhance the red region and improve the quantum efficiency of LaSiO(2)N phosphor. The warm W-LED lamp fabricated with this red region enhanced LaSiO(2)N:Eu phosphor exhibited high CRI (Ra = 86), suitable CCT (5783 K) and CIE chromaticity (0.33, 0.36), indicating this synergistically enhanced strategy could be used for design of yellow-emitting phosphor materials to obtain warm W-LEDs. Nature Publishing Group 2016-08-11 /pmc/articles/PMC4980616/ /pubmed/27510501 http://dx.doi.org/10.1038/srep31199 Text en Copyright © 2016, The Author(s) http://creativecommons.org/licenses/by/4.0/ This work is licensed under a Creative Commons Attribution 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 to reproduce the material. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/
spellingShingle Article
Chen, Jian
Liu, Yangai
Mei, Lefu
Peng, Peng
Cheng, Qijin
Liu, Haikun
Design of a Yellow-Emitting Phosphor with Enhanced Red Emission via Valence State-control for Warm White LEDs Application
title Design of a Yellow-Emitting Phosphor with Enhanced Red Emission via Valence State-control for Warm White LEDs Application
title_full Design of a Yellow-Emitting Phosphor with Enhanced Red Emission via Valence State-control for Warm White LEDs Application
title_fullStr Design of a Yellow-Emitting Phosphor with Enhanced Red Emission via Valence State-control for Warm White LEDs Application
title_full_unstemmed Design of a Yellow-Emitting Phosphor with Enhanced Red Emission via Valence State-control for Warm White LEDs Application
title_short Design of a Yellow-Emitting Phosphor with Enhanced Red Emission via Valence State-control for Warm White LEDs Application
title_sort design of a yellow-emitting phosphor with enhanced red emission via valence state-control for warm white leds application
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4980616/
https://www.ncbi.nlm.nih.gov/pubmed/27510501
http://dx.doi.org/10.1038/srep31199
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