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Optical Properties of Red-Emitting Rb(2)Bi(PO(4))(MoO(4)):Eu(3+) Powders and Ceramics with High Quantum Efficiency for White LEDs
There are several key requirements that a very good LED phosphor should meet, i.e., strong absorption, high quantum efficiency, high colour purity, and high luminescence quenching temperature. The reported Rb(2)Bi(PO(4))(MoO(4)):Eu(3+) phosphors have all these properties. The Rb(2)Bi(PO(4))(MoO(4)):...
Autores principales: | , , , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
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MDPI
2019
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6804156/ https://www.ncbi.nlm.nih.gov/pubmed/31597346 http://dx.doi.org/10.3390/ma12193275 |
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author | Grigorjevaite, Julija Ezerskyte, Egle Minderyte, Agne Stanionyte, Sandra Juskenas, Remigijus Sakirzanovas, Simas Katelnikovas, Arturas |
author_facet | Grigorjevaite, Julija Ezerskyte, Egle Minderyte, Agne Stanionyte, Sandra Juskenas, Remigijus Sakirzanovas, Simas Katelnikovas, Arturas |
author_sort | Grigorjevaite, Julija |
collection | PubMed |
description | There are several key requirements that a very good LED phosphor should meet, i.e., strong absorption, high quantum efficiency, high colour purity, and high luminescence quenching temperature. The reported Rb(2)Bi(PO(4))(MoO(4)):Eu(3+) phosphors have all these properties. The Rb(2)Bi(PO(4))(MoO(4)):Eu(3+) phosphors emit bright red light if excited with near-UV radiation. The calculated colour coordinates show good stability in the 77–500 K temperature range. Moreover, sample doped with 50% Eu(3+) possesses quantum efficiency close to unity. Besides the powder samples, ceramic disks of Rb(2)Eu(PO(4))(MoO(4)) specimen were also prepared, and the red light sources from these disks in combination with near-UV emitting LED were fabricated. The obtained results indicated that ceramic disks efficiently absorb the emission of 375 and 400 nm LED and could be applied as a red component in phosphor-converted white LEDs. |
format | Online Article Text |
id | pubmed-6804156 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2019 |
publisher | MDPI |
record_format | MEDLINE/PubMed |
spelling | pubmed-68041562019-11-18 Optical Properties of Red-Emitting Rb(2)Bi(PO(4))(MoO(4)):Eu(3+) Powders and Ceramics with High Quantum Efficiency for White LEDs Grigorjevaite, Julija Ezerskyte, Egle Minderyte, Agne Stanionyte, Sandra Juskenas, Remigijus Sakirzanovas, Simas Katelnikovas, Arturas Materials (Basel) Article There are several key requirements that a very good LED phosphor should meet, i.e., strong absorption, high quantum efficiency, high colour purity, and high luminescence quenching temperature. The reported Rb(2)Bi(PO(4))(MoO(4)):Eu(3+) phosphors have all these properties. The Rb(2)Bi(PO(4))(MoO(4)):Eu(3+) phosphors emit bright red light if excited with near-UV radiation. The calculated colour coordinates show good stability in the 77–500 K temperature range. Moreover, sample doped with 50% Eu(3+) possesses quantum efficiency close to unity. Besides the powder samples, ceramic disks of Rb(2)Eu(PO(4))(MoO(4)) specimen were also prepared, and the red light sources from these disks in combination with near-UV emitting LED were fabricated. The obtained results indicated that ceramic disks efficiently absorb the emission of 375 and 400 nm LED and could be applied as a red component in phosphor-converted white LEDs. MDPI 2019-10-08 /pmc/articles/PMC6804156/ /pubmed/31597346 http://dx.doi.org/10.3390/ma12193275 Text en © 2019 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 Grigorjevaite, Julija Ezerskyte, Egle Minderyte, Agne Stanionyte, Sandra Juskenas, Remigijus Sakirzanovas, Simas Katelnikovas, Arturas Optical Properties of Red-Emitting Rb(2)Bi(PO(4))(MoO(4)):Eu(3+) Powders and Ceramics with High Quantum Efficiency for White LEDs |
title | Optical Properties of Red-Emitting Rb(2)Bi(PO(4))(MoO(4)):Eu(3+) Powders and Ceramics with High Quantum Efficiency for White LEDs |
title_full | Optical Properties of Red-Emitting Rb(2)Bi(PO(4))(MoO(4)):Eu(3+) Powders and Ceramics with High Quantum Efficiency for White LEDs |
title_fullStr | Optical Properties of Red-Emitting Rb(2)Bi(PO(4))(MoO(4)):Eu(3+) Powders and Ceramics with High Quantum Efficiency for White LEDs |
title_full_unstemmed | Optical Properties of Red-Emitting Rb(2)Bi(PO(4))(MoO(4)):Eu(3+) Powders and Ceramics with High Quantum Efficiency for White LEDs |
title_short | Optical Properties of Red-Emitting Rb(2)Bi(PO(4))(MoO(4)):Eu(3+) Powders and Ceramics with High Quantum Efficiency for White LEDs |
title_sort | optical properties of red-emitting rb(2)bi(po(4))(moo(4)):eu(3+) powders and ceramics with high quantum efficiency for white leds |
topic | Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6804156/ https://www.ncbi.nlm.nih.gov/pubmed/31597346 http://dx.doi.org/10.3390/ma12193275 |
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