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Improving Color Quality of Nanowire White Light-Emitting Diodes with Mn(4+) Doped Fluoride Nanosheets
A two-dimensional nanostructured fluoride red-emitting phosphor with an excellent quantum yield of ~91% is studied for cost-effective and high-color quality nanowire white light-emitting diodes (WLEDs). K(2)TiF(6):Mn(4+) phosphors are synthesized via an emulsification method using surfactants as sod...
Autores principales: | , , , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
MDPI
2021
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8399484/ https://www.ncbi.nlm.nih.gov/pubmed/34442587 http://dx.doi.org/10.3390/mi12080965 |
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author | Vu, Thi Hong Quan Doan, Thi Tuyet Jain, Barsha Velpula, Ravi Teja Pham, Tung Cao Thanh Nguyen, Hieu Pham Trung Nguyen, Hoang-Duy |
author_facet | Vu, Thi Hong Quan Doan, Thi Tuyet Jain, Barsha Velpula, Ravi Teja Pham, Tung Cao Thanh Nguyen, Hieu Pham Trung Nguyen, Hoang-Duy |
author_sort | Vu, Thi Hong Quan |
collection | PubMed |
description | A two-dimensional nanostructured fluoride red-emitting phosphor with an excellent quantum yield of ~91% is studied for cost-effective and high-color quality nanowire white light-emitting diodes (WLEDs). K(2)TiF(6):Mn(4+) phosphors are synthesized via an emulsification method using surfactants as sodium dodecyl sulphonate and oleic acid. The K(2)TiF(6):Mn(4+) phosphors in ultra-thin and nanosheet crystals are observed via scanning electron microscopy and high-resolution transmission electron microscopy. The surfactants are found to play a key role in inhibition of KTFM crystal growth process and stabilization of Mn(4+) ions doping into the K(2)TiF(6) host. The prepared phosphors exhibited intensive red emission at approximately 632 nm and excellent thermal stability in the range of 300–500 K upon 460 nm light excitation. Moreover, the K(2)TiF(6):Mn(4+) nanosheets were integrated on InGaN/AlGaN nanowire WLEDs for color quality study. The results show that the nanowire WLEDs with red-emitting phosphor exhibit unprecedentedly high color rendering index ~96.4, and correlated color temperature ~4450 K. |
format | Online Article Text |
id | pubmed-8399484 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2021 |
publisher | MDPI |
record_format | MEDLINE/PubMed |
spelling | pubmed-83994842021-08-29 Improving Color Quality of Nanowire White Light-Emitting Diodes with Mn(4+) Doped Fluoride Nanosheets Vu, Thi Hong Quan Doan, Thi Tuyet Jain, Barsha Velpula, Ravi Teja Pham, Tung Cao Thanh Nguyen, Hieu Pham Trung Nguyen, Hoang-Duy Micromachines (Basel) Article A two-dimensional nanostructured fluoride red-emitting phosphor with an excellent quantum yield of ~91% is studied for cost-effective and high-color quality nanowire white light-emitting diodes (WLEDs). K(2)TiF(6):Mn(4+) phosphors are synthesized via an emulsification method using surfactants as sodium dodecyl sulphonate and oleic acid. The K(2)TiF(6):Mn(4+) phosphors in ultra-thin and nanosheet crystals are observed via scanning electron microscopy and high-resolution transmission electron microscopy. The surfactants are found to play a key role in inhibition of KTFM crystal growth process and stabilization of Mn(4+) ions doping into the K(2)TiF(6) host. The prepared phosphors exhibited intensive red emission at approximately 632 nm and excellent thermal stability in the range of 300–500 K upon 460 nm light excitation. Moreover, the K(2)TiF(6):Mn(4+) nanosheets were integrated on InGaN/AlGaN nanowire WLEDs for color quality study. The results show that the nanowire WLEDs with red-emitting phosphor exhibit unprecedentedly high color rendering index ~96.4, and correlated color temperature ~4450 K. MDPI 2021-08-15 /pmc/articles/PMC8399484/ /pubmed/34442587 http://dx.doi.org/10.3390/mi12080965 Text en © 2021 by the authors. https://creativecommons.org/licenses/by/4.0/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 (https://creativecommons.org/licenses/by/4.0/). |
spellingShingle | Article Vu, Thi Hong Quan Doan, Thi Tuyet Jain, Barsha Velpula, Ravi Teja Pham, Tung Cao Thanh Nguyen, Hieu Pham Trung Nguyen, Hoang-Duy Improving Color Quality of Nanowire White Light-Emitting Diodes with Mn(4+) Doped Fluoride Nanosheets |
title | Improving Color Quality of Nanowire White Light-Emitting Diodes with Mn(4+) Doped Fluoride Nanosheets |
title_full | Improving Color Quality of Nanowire White Light-Emitting Diodes with Mn(4+) Doped Fluoride Nanosheets |
title_fullStr | Improving Color Quality of Nanowire White Light-Emitting Diodes with Mn(4+) Doped Fluoride Nanosheets |
title_full_unstemmed | Improving Color Quality of Nanowire White Light-Emitting Diodes with Mn(4+) Doped Fluoride Nanosheets |
title_short | Improving Color Quality of Nanowire White Light-Emitting Diodes with Mn(4+) Doped Fluoride Nanosheets |
title_sort | improving color quality of nanowire white light-emitting diodes with mn(4+) doped fluoride nanosheets |
topic | Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8399484/ https://www.ncbi.nlm.nih.gov/pubmed/34442587 http://dx.doi.org/10.3390/mi12080965 |
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