Synthesis and tunable luminescent properties of Eu-doped Ca2NaSiO4F – Coexistence of the Eu2+ and Eu3+ centers

Novel phosphors Ca2NaSiO4F:Eu were synthesized successfully by the conventional solid-state method in CO atmosphere, and their spectroscopic properties in UV−vis region were investigated. The photoluminescence properties show that Eu3+ ions were partially reduced to Eu2+ in Ca2NaSiO4F. As a result o...

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Main Authors: Mubiao Xie, Dongyu Li, Guoxian Zhu, Rongkai Pan, Xionghui Fu
Format: Article
Language:English
Published: Elsevier 2016-01-01
Series:Results in Physics
Online Access:http://www.sciencedirect.com/science/article/pii/S2211379716000206
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author Mubiao Xie
Dongyu Li
Guoxian Zhu
Rongkai Pan
Xionghui Fu
author_facet Mubiao Xie
Dongyu Li
Guoxian Zhu
Rongkai Pan
Xionghui Fu
author_sort Mubiao Xie
collection DOAJ
description Novel phosphors Ca2NaSiO4F:Eu were synthesized successfully by the conventional solid-state method in CO atmosphere, and their spectroscopic properties in UV−vis region were investigated. The photoluminescence properties show that Eu3+ ions were partially reduced to Eu2+ in Ca2NaSiO4F. As a result of radiation and re-absorption energy transfer from Eu2+ to Eu3+, both Eu2+ bluish-green emission at around 520 nm and Eu3+ red emission are observed in the emission spectra under the n-UV light excitation. Furthermore, the ratio between Eu2+ and Eu3+ emissions varies with increasing content of overall Eu. Because relative intensity of the red component from Eu3+ became systematically stronger, white light emission can be realized by combining the emission of Eu2+ and Eu3+ in a single host lattice under n-UV light excitation. These results indicate that the Ca2NaSiO4F:Eu phosphors have potential applications as a n-UV convertible phosphor for light-emitting diodes. Keywords: Phosphors, Luminescence, White LED, Optical materials
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spelling doaj.art-bb945ed65702414992b2fb0460e902df2022-12-22T01:19:47ZengElsevierResults in Physics2211-37972016-01-0167073Synthesis and tunable luminescent properties of Eu-doped Ca2NaSiO4F – Coexistence of the Eu2+ and Eu3+ centersMubiao Xie0Dongyu Li1Guoxian Zhu2Rongkai Pan3Xionghui Fu4Institute of Physical Chemistry, School of Chemistry and Chemical Engineering, Lingnan Normal University, Zhanjiang 524048, China; Corresponding author. Tel.: +86 759 3183245; fax: +86 759 3183510.School of Physics Science and Technology, Lingnan Normal University, Zhanjiang 524048, ChinaInstitute of Physical Chemistry, School of Chemistry and Chemical Engineering, Lingnan Normal University, Zhanjiang 524048, ChinaInstitute of Physical Chemistry, School of Chemistry and Chemical Engineering, Lingnan Normal University, Zhanjiang 524048, ChinaDepartment of Chemistry, Jinan University, Guangzhou 510632, ChinaNovel phosphors Ca2NaSiO4F:Eu were synthesized successfully by the conventional solid-state method in CO atmosphere, and their spectroscopic properties in UV−vis region were investigated. The photoluminescence properties show that Eu3+ ions were partially reduced to Eu2+ in Ca2NaSiO4F. As a result of radiation and re-absorption energy transfer from Eu2+ to Eu3+, both Eu2+ bluish-green emission at around 520 nm and Eu3+ red emission are observed in the emission spectra under the n-UV light excitation. Furthermore, the ratio between Eu2+ and Eu3+ emissions varies with increasing content of overall Eu. Because relative intensity of the red component from Eu3+ became systematically stronger, white light emission can be realized by combining the emission of Eu2+ and Eu3+ in a single host lattice under n-UV light excitation. These results indicate that the Ca2NaSiO4F:Eu phosphors have potential applications as a n-UV convertible phosphor for light-emitting diodes. Keywords: Phosphors, Luminescence, White LED, Optical materialshttp://www.sciencedirect.com/science/article/pii/S2211379716000206
spellingShingle Mubiao Xie
Dongyu Li
Guoxian Zhu
Rongkai Pan
Xionghui Fu
Synthesis and tunable luminescent properties of Eu-doped Ca2NaSiO4F – Coexistence of the Eu2+ and Eu3+ centers
Results in Physics
title Synthesis and tunable luminescent properties of Eu-doped Ca2NaSiO4F – Coexistence of the Eu2+ and Eu3+ centers
title_full Synthesis and tunable luminescent properties of Eu-doped Ca2NaSiO4F – Coexistence of the Eu2+ and Eu3+ centers
title_fullStr Synthesis and tunable luminescent properties of Eu-doped Ca2NaSiO4F – Coexistence of the Eu2+ and Eu3+ centers
title_full_unstemmed Synthesis and tunable luminescent properties of Eu-doped Ca2NaSiO4F – Coexistence of the Eu2+ and Eu3+ centers
title_short Synthesis and tunable luminescent properties of Eu-doped Ca2NaSiO4F – Coexistence of the Eu2+ and Eu3+ centers
title_sort synthesis and tunable luminescent properties of eu doped ca2nasio4f coexistence of the eu2 and eu3 centers
url http://www.sciencedirect.com/science/article/pii/S2211379716000206
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