skip to main content
OSTI.GOV title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: Novel red phosphors Na{sub 2}CaSiO{sub 4}:Eu{sup 3+} for light-emitting diodes

Abstract

Highlights: {yields} NCSE phosphors can be efficiently excited by ultraviolet light. {yields} The PL integral intensity of NCSE excited at 393 nm is 1.87 times of Y{sub 2}O{sub 3}:Eu{sup 3+}. {yields} NCSE phosphors have good color saturation and high quantum efficiency. -- Abstract: Novel red phosphors Na{sub 2}CaSiO{sub 4}:xEu{sup 3+} were synthesized using high temperature solid-state reaction and their luminescence characteristics were investigated for the first time. The excitation spectra indicate that the Na{sub 2}CaSiO{sub 4}:xEu{sup 3+} phosphors can be effectively excited by ultraviolet (393 nm) light. The emission spectra of Na{sub 2}CaSiO{sub 4}:xEu{sup 3+} phosphors invariably exhibit four peaks assigned to the {sup 5}D{sub 0}-{sup 7}F{sub J} (J = 1, 2, 3 and 4) transitions of Eu{sup 3+} under 393 nm excitation. The Commission Internationale de l'Eclairage (CIE) chromaticity coordinates and quantum efficiency (QE) are (0.66, 0.34) and 58.9%, respectively. The good color saturation and high quantum efficiency indicate that Na{sub 2}CaSiO{sub 4}:Eu{sup 3+} phosphors are potential candidate for light-emitting diodes.

Authors:
; ; ;  [1];  [1]
  1. Department of Materials Science, School of Physical Science and Technology, Lanzhou University, Lanzhou 730000 (China)
Publication Date:
OSTI Identifier:
22212194
Resource Type:
Journal Article
Journal Name:
Materials Research Bulletin
Additional Journal Information:
Journal Volume: 46; Journal Issue: 7; Other Information: Copyright (c) 2011 Elsevier Science B.V., Amsterdam, The Netherlands, All rights reserved.; Country of input: International Atomic Energy Agency (IAEA); Journal ID: ISSN 0025-5408
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; EMISSION SPECTRA; EXCITATION; LIGHT EMITTING DIODES; LUMINESCENCE; PEAKS; QUANTUM EFFICIENCY; SOLIDS

Citation Formats

Shi, Yurong, Yang, Zhigang, Wang, Wenjie, Zhu, Ge, and Wang, Yuhua, E-mail: wyh@lzu.edu.cn. Novel red phosphors Na{sub 2}CaSiO{sub 4}:Eu{sup 3+} for light-emitting diodes. United States: N. p., 2011. Web. doi:10.1016/J.MATERRESBULL.2011.03.001.
Shi, Yurong, Yang, Zhigang, Wang, Wenjie, Zhu, Ge, & Wang, Yuhua, E-mail: wyh@lzu.edu.cn. Novel red phosphors Na{sub 2}CaSiO{sub 4}:Eu{sup 3+} for light-emitting diodes. United States. doi:10.1016/J.MATERRESBULL.2011.03.001.
Shi, Yurong, Yang, Zhigang, Wang, Wenjie, Zhu, Ge, and Wang, Yuhua, E-mail: wyh@lzu.edu.cn. Fri . "Novel red phosphors Na{sub 2}CaSiO{sub 4}:Eu{sup 3+} for light-emitting diodes". United States. doi:10.1016/J.MATERRESBULL.2011.03.001.
@article{osti_22212194,
title = {Novel red phosphors Na{sub 2}CaSiO{sub 4}:Eu{sup 3+} for light-emitting diodes},
author = {Shi, Yurong and Yang, Zhigang and Wang, Wenjie and Zhu, Ge and Wang, Yuhua, E-mail: wyh@lzu.edu.cn},
abstractNote = {Highlights: {yields} NCSE phosphors can be efficiently excited by ultraviolet light. {yields} The PL integral intensity of NCSE excited at 393 nm is 1.87 times of Y{sub 2}O{sub 3}:Eu{sup 3+}. {yields} NCSE phosphors have good color saturation and high quantum efficiency. -- Abstract: Novel red phosphors Na{sub 2}CaSiO{sub 4}:xEu{sup 3+} were synthesized using high temperature solid-state reaction and their luminescence characteristics were investigated for the first time. The excitation spectra indicate that the Na{sub 2}CaSiO{sub 4}:xEu{sup 3+} phosphors can be effectively excited by ultraviolet (393 nm) light. The emission spectra of Na{sub 2}CaSiO{sub 4}:xEu{sup 3+} phosphors invariably exhibit four peaks assigned to the {sup 5}D{sub 0}-{sup 7}F{sub J} (J = 1, 2, 3 and 4) transitions of Eu{sup 3+} under 393 nm excitation. The Commission Internationale de l'Eclairage (CIE) chromaticity coordinates and quantum efficiency (QE) are (0.66, 0.34) and 58.9%, respectively. The good color saturation and high quantum efficiency indicate that Na{sub 2}CaSiO{sub 4}:Eu{sup 3+} phosphors are potential candidate for light-emitting diodes.},
doi = {10.1016/J.MATERRESBULL.2011.03.001},
journal = {Materials Research Bulletin},
issn = {0025-5408},
number = 7,
volume = 46,
place = {United States},
year = {2011},
month = {7}
}