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Effect of Li(+) doping on the luminescence performance of a novel KAlSiO(4):Tb(3+) green-emitting phosphor
A new green-emitting phosphor, KAlSiO(4):1.5 mol% Tb(3+), x mol% Li(+), was prepared via a high-temperature solid-phase method, and its crystal structure, diffuse reflectance spectrum, and luminescence were studied. The results show that the Li(+) doping shifts the strongest diffraction peak to a hi...
Autores principales: | , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
Nature Publishing Group UK
2021
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7933207/ https://www.ncbi.nlm.nih.gov/pubmed/33664293 http://dx.doi.org/10.1038/s41598-021-84220-x |
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author | Yantake, Reziwanguli Kaiheriman, Muyasier Yusufu, Taximaiti Sidike, Aierken |
author_facet | Yantake, Reziwanguli Kaiheriman, Muyasier Yusufu, Taximaiti Sidike, Aierken |
author_sort | Yantake, Reziwanguli |
collection | PubMed |
description | A new green-emitting phosphor, KAlSiO(4):1.5 mol% Tb(3+), x mol% Li(+), was prepared via a high-temperature solid-phase method, and its crystal structure, diffuse reflectance spectrum, and luminescence were studied. The results show that the Li(+) doping shifts the strongest diffraction peak to a high angle direction, reducing grain size by 11.4%. The entry of Li(2)CO(3) improves the luminescence performance of KAlSiO(4):1.5 mol% Tb(3+). At a Li(+) concentration of 1.5 mol%, the sample has strong absorption in the ultraviolet light range from 250 to 400 nm. The luminous intensity of the sample at 550 nm approximately quadruples after Li(+) doping. Additionally, the colour purity of the sample and the internal quantum yield increase to 83.3% and 42%, respectively. The sample changes colour with time when exposed to air without an obvious fading phenomenon. The emission intensity at 200 °C is 95.1% of its value at room temperature, indicating that the phosphor has excellent thermal stability when x = 1.5. These results show the feasibility of using the silicate phosphor for generating the green light component of white light-emitting diodes for solid-state lighting. |
format | Online Article Text |
id | pubmed-7933207 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2021 |
publisher | Nature Publishing Group UK |
record_format | MEDLINE/PubMed |
spelling | pubmed-79332072021-03-05 Effect of Li(+) doping on the luminescence performance of a novel KAlSiO(4):Tb(3+) green-emitting phosphor Yantake, Reziwanguli Kaiheriman, Muyasier Yusufu, Taximaiti Sidike, Aierken Sci Rep Article A new green-emitting phosphor, KAlSiO(4):1.5 mol% Tb(3+), x mol% Li(+), was prepared via a high-temperature solid-phase method, and its crystal structure, diffuse reflectance spectrum, and luminescence were studied. The results show that the Li(+) doping shifts the strongest diffraction peak to a high angle direction, reducing grain size by 11.4%. The entry of Li(2)CO(3) improves the luminescence performance of KAlSiO(4):1.5 mol% Tb(3+). At a Li(+) concentration of 1.5 mol%, the sample has strong absorption in the ultraviolet light range from 250 to 400 nm. The luminous intensity of the sample at 550 nm approximately quadruples after Li(+) doping. Additionally, the colour purity of the sample and the internal quantum yield increase to 83.3% and 42%, respectively. The sample changes colour with time when exposed to air without an obvious fading phenomenon. The emission intensity at 200 °C is 95.1% of its value at room temperature, indicating that the phosphor has excellent thermal stability when x = 1.5. These results show the feasibility of using the silicate phosphor for generating the green light component of white light-emitting diodes for solid-state lighting. Nature Publishing Group UK 2021-03-04 /pmc/articles/PMC7933207/ /pubmed/33664293 http://dx.doi.org/10.1038/s41598-021-84220-x Text en © The Author(s) 2021 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 licence, and indicate if changes were made. The images or other third party material in this article are included in the article's Creative Commons licence, unless indicated otherwise in a credit line to the material. If material is not included in the article's Creative Commons licence 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 licence, visit http://creativecommons.org/licenses/by/4.0/. |
spellingShingle | Article Yantake, Reziwanguli Kaiheriman, Muyasier Yusufu, Taximaiti Sidike, Aierken Effect of Li(+) doping on the luminescence performance of a novel KAlSiO(4):Tb(3+) green-emitting phosphor |
title | Effect of Li(+) doping on the luminescence performance of a novel KAlSiO(4):Tb(3+) green-emitting phosphor |
title_full | Effect of Li(+) doping on the luminescence performance of a novel KAlSiO(4):Tb(3+) green-emitting phosphor |
title_fullStr | Effect of Li(+) doping on the luminescence performance of a novel KAlSiO(4):Tb(3+) green-emitting phosphor |
title_full_unstemmed | Effect of Li(+) doping on the luminescence performance of a novel KAlSiO(4):Tb(3+) green-emitting phosphor |
title_short | Effect of Li(+) doping on the luminescence performance of a novel KAlSiO(4):Tb(3+) green-emitting phosphor |
title_sort | effect of li(+) doping on the luminescence performance of a novel kalsio(4):tb(3+) green-emitting phosphor |
topic | Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7933207/ https://www.ncbi.nlm.nih.gov/pubmed/33664293 http://dx.doi.org/10.1038/s41598-021-84220-x |
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