Pure orange color emitting Sm3+ doped BaNb2O6 phosphor for solid - state lighting applications

Pure orange color emitting Sm3+ doped BaNb2O6 phosphor for solid - state lighting applications Single phase pure orange light emitting BaNb2O6:xSm3+ (0.5≤x≤3.0mol%) phosphors with orthorhombic structure have been synthesized via high temperature solid state reaction method. Crystal structure, morphology, luminescent and decay properties were studied extensively for the synthesized phosphor. The luminescence spectrum of Sm3+ doped BaNb2O6 phosphor exhibits three intense peaks centered at 565, 599 and 645nm corresponding to the 4G5/2→6H5/2, 4G5/2→6H7/2 and 4G5/2→6H9/2 transitions, respectively. The optimum concentration for Sm3+ doped BaNb2O6 is observed as 1.5mol% and the probable energy transfer mechanisms between Sm3+ ions caused concentration quenching have been explained in detail. The calculated Commission Internationale de L’Eclairage (CIE) chromaticity coordinates have been found to be (0.557, 0.440) lies in the pure orange region, which is in the close proximity to the Nichia corporation developed amber LED. The luminescence decay lifetime for 4G5/2 excited level was found to be in the microseconds (µs) range. The Sm3+ doped BaNb2O6 phosphor could be a potential candidate for use in the display and solid - state lighting applications. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Journal of Luminescence Elsevier

Pure orange color emitting Sm3+ doped BaNb2O6 phosphor for solid - state lighting applications

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Publisher
Elsevier
Copyright
Copyright © 2016 Elsevier B.V.
ISSN
0022-2313
eISSN
1872-7883
D.O.I.
10.1016/j.jlumin.2016.03.025
Publisher site
See Article on Publisher Site

Abstract

Single phase pure orange light emitting BaNb2O6:xSm3+ (0.5≤x≤3.0mol%) phosphors with orthorhombic structure have been synthesized via high temperature solid state reaction method. Crystal structure, morphology, luminescent and decay properties were studied extensively for the synthesized phosphor. The luminescence spectrum of Sm3+ doped BaNb2O6 phosphor exhibits three intense peaks centered at 565, 599 and 645nm corresponding to the 4G5/2→6H5/2, 4G5/2→6H7/2 and 4G5/2→6H9/2 transitions, respectively. The optimum concentration for Sm3+ doped BaNb2O6 is observed as 1.5mol% and the probable energy transfer mechanisms between Sm3+ ions caused concentration quenching have been explained in detail. The calculated Commission Internationale de L’Eclairage (CIE) chromaticity coordinates have been found to be (0.557, 0.440) lies in the pure orange region, which is in the close proximity to the Nichia corporation developed amber LED. The luminescence decay lifetime for 4G5/2 excited level was found to be in the microseconds (µs) range. The Sm3+ doped BaNb2O6 phosphor could be a potential candidate for use in the display and solid - state lighting applications.

Journal

Journal of LuminescenceElsevier

Published: Aug 1, 2016

References

  • Nat. Commun.
    Bai, X.; Caputo, G.; Hao, Z.; Freitas, V.T.; Zhang, J.; Longo, R.L.; Malta, O.L.; Ferreira, A.S.; Pinna, N.
  • J. Lumin.
    Xu, Q.; Sun, J.; Cui, D.; Di, Q.; Zeng, J.

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