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Journal of Materials Science: Materials in Electronics

Eu3+-activated Ln2TeO6 (Ln = La, Y) as a novel red-emitting phosphor for warm white LEDs

  • 13-11-2020
Published in:
Authors
F. B. Xiong
F. X. Xu
X. G. Meng
E. Ma
W. Z. Zhu
Published in
Journal of Materials Science: Materials in Electronics | Issue 24/2020

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Abstract

Novel red-emitting phosphor Ln2TeO6:Eu3+ (Ln = La, Y) was synthesized through a high temperature solid-state reaction method. The material was characterized by X-ray diffraction patterns, Raman spectra, diffuse reflection spectra, photoluminescence excitation and emission spectra, the Commission International de L’Eclairage (CIE) chromaticity coordinates, luminescence decay curves, and temperature-dependent emission spectra. Ln2TeO6:Eu3+ (Ln = La, Y) emitted red light under the excitation of the near-UV and blue light and the concentration quenching mechanism was determined. Combined those phosphors with near-UV chips, the as-fabricated light emitting diode (LED) lamp gave bright red light under a forward bias current. These results demonstrated that Ln2TeO6:Eu3+ (Ln = La, Y) have promising application in phosphor-converted near-UV LED.

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Title
Eu3+-activated Ln2TeO6 (Ln = La, Y) as a novel red-emitting phosphor for warm white LEDs
Authors
F. B. Xiong
F. X. Xu
X. G. Meng
E. Ma
W. Z. Zhu
Publication date
13-11-2020
Publisher
Springer US
Published in
Journal of Materials Science: Materials in Electronics / Issue 24/2020
Print ISSN: 0957-4522
Electronic ISSN: 1573-482X
DOI
https://doi.org/10.1007/s10854-020-04821-6
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