New reddish-orange and greenish-yellow light emitting phosphors: Eu 3+ and Tb 3+ /Eu 3+ in sodium germanate glass

E. Álvarez, Ma E. Zayas, J. Alvarado-Rivera, F. Félix-Domínguez, R. P. Duarte-Zamorano, U. Caldiño

Research output: Contribution to journalArticleResearchpeer-review

Abstract

A spectroscopic analysis of sodium germanate glasses activated with Eu 3+ , Tb 3+ and Eu 3+ /Tb 3+ is performed from their photoluminescence spectra and decay times. In the Eu 3+ -singly doped glass reddish-orange light emission, with x=0.64 and y=0.35 CIE1931 chromaticity coordinates, is obtained upon Eu 3+ excitation at 393 nm. Such chromaticity coordinates are close to those (0.67, 0.33) proposed by the National Television Standard Committee for the red phosphor. When the sodium germanate glass is co-doped with Tb 3+ and Eu 3+ greenish-yellow light emission, with (0.41, 0.46) CIE1931 chromaticity coordinates, is obtained upon Tb 3+ excitation at 344 nm. Such greenish-yellow luminescence is due mainly to the terbium 5 D 4 → 7 F 6,5 and europium 5 D 0 → 7 F 1,2 emissions, Eu 3+ being sensitized by Tb 3+ through a non-radiative energy transfer. The non-radiative nature of this energy transfer is inferred from the increase in the decay rate of the Tb 3+ emission when the glass is co-doped with Eu 3+ . From an analysis of the Tb 3+ emission decay time curves it is inferred that such energy transfer might take place between Tb 3+ and Eu 3+ clusters through a short-range interaction mechanism. © 2014 Elsevier B.V.
Original languageSpanish (Mexico)
Pages (from-to)198-202
Number of pages5
JournalJournal of Luminescence
Volume153
DOIs
StatePublished - Sep 2014

Cite this

Álvarez, E. ; Zayas, Ma E. ; Alvarado-Rivera, J. ; Félix-Domínguez, F. ; Duarte-Zamorano, R. P. ; Caldiño, U. / New reddish-orange and greenish-yellow light emitting phosphors: Eu 3+ and Tb 3+ /Eu 3+ in sodium germanate glass. In: Journal of Luminescence. 2014 ; Vol. 153. pp. 198-202.
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title = "New reddish-orange and greenish-yellow light emitting phosphors: Eu 3+ and Tb 3+ /Eu 3+ in sodium germanate glass",
abstract = "A spectroscopic analysis of sodium germanate glasses activated with Eu 3+ , Tb 3+ and Eu 3+ /Tb 3+ is performed from their photoluminescence spectra and decay times. In the Eu 3+ -singly doped glass reddish-orange light emission, with x=0.64 and y=0.35 CIE1931 chromaticity coordinates, is obtained upon Eu 3+ excitation at 393 nm. Such chromaticity coordinates are close to those (0.67, 0.33) proposed by the National Television Standard Committee for the red phosphor. When the sodium germanate glass is co-doped with Tb 3+ and Eu 3+ greenish-yellow light emission, with (0.41, 0.46) CIE1931 chromaticity coordinates, is obtained upon Tb 3+ excitation at 344 nm. Such greenish-yellow luminescence is due mainly to the terbium 5 D 4 → 7 F 6,5 and europium 5 D 0 → 7 F 1,2 emissions, Eu 3+ being sensitized by Tb 3+ through a non-radiative energy transfer. The non-radiative nature of this energy transfer is inferred from the increase in the decay rate of the Tb 3+ emission when the glass is co-doped with Eu 3+ . From an analysis of the Tb 3+ emission decay time curves it is inferred that such energy transfer might take place between Tb 3+ and Eu 3+ clusters through a short-range interaction mechanism. {\circledC} 2014 Elsevier B.V.",
keywords = "Eu3+, Non-radiative energy transfer, Photoluminescence, Sodium germanate glasses, Tb3+",
author = "E. {\'A}lvarez and Zayas, {Ma E.} and J. Alvarado-Rivera and F. F{\'e}lix-Dom{\'i}nguez and Duarte-Zamorano, {R. P.} and U. Caldi{\~n}o",
year = "2014",
month = "9",
doi = "10.1016/j.jlumin.2014.03.031",
language = "Espa{\~n}ol (M{\'e}xico)",
volume = "153",
pages = "198--202",
journal = "Journal of Luminescence",
issn = "0022-2313",
publisher = "Elsevier",

}

New reddish-orange and greenish-yellow light emitting phosphors: Eu 3+ and Tb 3+ /Eu 3+ in sodium germanate glass. / Álvarez, E.; Zayas, Ma E.; Alvarado-Rivera, J.; Félix-Domínguez, F.; Duarte-Zamorano, R. P.; Caldiño, U.

In: Journal of Luminescence, Vol. 153, 09.2014, p. 198-202.

Research output: Contribution to journalArticleResearchpeer-review

TY - JOUR

T1 - New reddish-orange and greenish-yellow light emitting phosphors: Eu 3+ and Tb 3+ /Eu 3+ in sodium germanate glass

AU - Álvarez, E.

AU - Zayas, Ma E.

AU - Alvarado-Rivera, J.

AU - Félix-Domínguez, F.

AU - Duarte-Zamorano, R. P.

AU - Caldiño, U.

PY - 2014/9

Y1 - 2014/9

N2 - A spectroscopic analysis of sodium germanate glasses activated with Eu 3+ , Tb 3+ and Eu 3+ /Tb 3+ is performed from their photoluminescence spectra and decay times. In the Eu 3+ -singly doped glass reddish-orange light emission, with x=0.64 and y=0.35 CIE1931 chromaticity coordinates, is obtained upon Eu 3+ excitation at 393 nm. Such chromaticity coordinates are close to those (0.67, 0.33) proposed by the National Television Standard Committee for the red phosphor. When the sodium germanate glass is co-doped with Tb 3+ and Eu 3+ greenish-yellow light emission, with (0.41, 0.46) CIE1931 chromaticity coordinates, is obtained upon Tb 3+ excitation at 344 nm. Such greenish-yellow luminescence is due mainly to the terbium 5 D 4 → 7 F 6,5 and europium 5 D 0 → 7 F 1,2 emissions, Eu 3+ being sensitized by Tb 3+ through a non-radiative energy transfer. The non-radiative nature of this energy transfer is inferred from the increase in the decay rate of the Tb 3+ emission when the glass is co-doped with Eu 3+ . From an analysis of the Tb 3+ emission decay time curves it is inferred that such energy transfer might take place between Tb 3+ and Eu 3+ clusters through a short-range interaction mechanism. © 2014 Elsevier B.V.

AB - A spectroscopic analysis of sodium germanate glasses activated with Eu 3+ , Tb 3+ and Eu 3+ /Tb 3+ is performed from their photoluminescence spectra and decay times. In the Eu 3+ -singly doped glass reddish-orange light emission, with x=0.64 and y=0.35 CIE1931 chromaticity coordinates, is obtained upon Eu 3+ excitation at 393 nm. Such chromaticity coordinates are close to those (0.67, 0.33) proposed by the National Television Standard Committee for the red phosphor. When the sodium germanate glass is co-doped with Tb 3+ and Eu 3+ greenish-yellow light emission, with (0.41, 0.46) CIE1931 chromaticity coordinates, is obtained upon Tb 3+ excitation at 344 nm. Such greenish-yellow luminescence is due mainly to the terbium 5 D 4 → 7 F 6,5 and europium 5 D 0 → 7 F 1,2 emissions, Eu 3+ being sensitized by Tb 3+ through a non-radiative energy transfer. The non-radiative nature of this energy transfer is inferred from the increase in the decay rate of the Tb 3+ emission when the glass is co-doped with Eu 3+ . From an analysis of the Tb 3+ emission decay time curves it is inferred that such energy transfer might take place between Tb 3+ and Eu 3+ clusters through a short-range interaction mechanism. © 2014 Elsevier B.V.

KW - Eu3+

KW - Non-radiative energy transfer

KW - Photoluminescence

KW - Sodium germanate glasses

KW - Tb3+

UR - http://www.mendeley.com/research/new-reddishorange-greenishyellow-light-emitting-phosphors-eu-3-tb-3-eu-3-sodium-germanate-glass

U2 - 10.1016/j.jlumin.2014.03.031

DO - 10.1016/j.jlumin.2014.03.031

M3 - Artículo

VL - 153

SP - 198

EP - 202

JO - Journal of Luminescence

JF - Journal of Luminescence

SN - 0022-2313

ER -