White luminescence of bismuth and samarium codoped Y2O3 phosphors

D. Y. Medina Velazquez; L. A. Hernández Soto; A. J. De Morales Ramirez; S. Carmona-Téllez; E. Garfias-Garcia; C. Falcony; A. García Murillo

doi:10.1016/j.ceramint.2015.03.054

White luminescence of bismuth and samarium codoped Y₂O₃ phosphors

D. Y. Medina Velazquez, L. A. Hernández Soto, A. J. De Morales Ramirez, S. Carmona-Téllez, E. Garfias-Garcia, C. Falcony, A. García Murillo

Research output: Contribution to journal › Article › peer-review

9 Scopus citations

Abstract

In this work Sm³⁺ (0-2.0 at%) and Bi³⁺ (0-2.0 at%) doped Y₂O₃ luminescent powders were prepared by a sol-gel method from yttrium acetylacetonate, samarium and bismuth nitrates as metal sources. The as prepared powders (chemical composition is close to stoichiometric Y₂O₃) present the cubic structure from 700 °C, and at 900 °C are characterized by the presence of rounded particles with heterogeneous size of 42.9 nm. Luminescent effect of ions of Sm³⁺ and Bi³⁺ into Y₂O₃ host as was studied on heat treated powders from 800 to 1100 °C. The combination of the red luminescence from the Sm³⁺ ions and the bluish from Bi³⁺, makes the synthesized phosphors candidates to be used in fabrication of phosphor-converted light-emitting diodes (LEDs).

Original language	English
Pages (from-to)	8481-8487
Number of pages	7
Journal	Ceramics International
Volume	41
Issue number	7
DOIs	https://doi.org/10.1016/j.ceramint.2015.03.054
State	Published - 1 Aug 2015

Keywords

D. YO
Phosphors
Sm-Bi
Sol-gel
White light

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title = "White luminescence of bismuth and samarium codoped Y2O3 phosphors",

abstract = "In this work Sm3+ (0-2.0 at%) and Bi3+ (0-2.0 at%) doped Y2O3 luminescent powders were prepared by a sol-gel method from yttrium acetylacetonate, samarium and bismuth nitrates as metal sources. The as prepared powders (chemical composition is close to stoichiometric Y2O3) present the cubic structure from 700 °C, and at 900 °C are characterized by the presence of rounded particles with heterogeneous size of 42.9 nm. Luminescent effect of ions of Sm3+ and Bi3+ into Y2O3 host as was studied on heat treated powders from 800 to 1100 °C. The combination of the red luminescence from the Sm3+ ions and the bluish from Bi3+, makes the synthesized phosphors candidates to be used in fabrication of phosphor-converted light-emitting diodes (LEDs).",

keywords = "D. YO, Phosphors, Sm-Bi, Sol-gel, White light",

author = "{Medina Velazquez}, {D. Y.} and {Hern{\'a}ndez Soto}, {L. A.} and {De Morales Ramirez}, {A. J.} and S. Carmona-T{\'e}llez and E. Garfias-Garcia and C. Falcony and {Garc{\'i}a Murillo}, A.",

year = "2015",

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doi = "10.1016/j.ceramint.2015.03.054",

language = "Ingl{\'e}s",

volume = "41",

pages = "8481--8487",

journal = "Ceramics International",

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T1 - White luminescence of bismuth and samarium codoped Y2O3 phosphors

AU - Medina Velazquez, D. Y.

AU - Hernández Soto, L. A.

AU - De Morales Ramirez, A. J.

AU - Carmona-Téllez, S.

AU - Garfias-Garcia, E.

AU - Falcony, C.

AU - García Murillo, A.

PY - 2015/8/1

Y1 - 2015/8/1

N2 - In this work Sm3+ (0-2.0 at%) and Bi3+ (0-2.0 at%) doped Y2O3 luminescent powders were prepared by a sol-gel method from yttrium acetylacetonate, samarium and bismuth nitrates as metal sources. The as prepared powders (chemical composition is close to stoichiometric Y2O3) present the cubic structure from 700 °C, and at 900 °C are characterized by the presence of rounded particles with heterogeneous size of 42.9 nm. Luminescent effect of ions of Sm3+ and Bi3+ into Y2O3 host as was studied on heat treated powders from 800 to 1100 °C. The combination of the red luminescence from the Sm3+ ions and the bluish from Bi3+, makes the synthesized phosphors candidates to be used in fabrication of phosphor-converted light-emitting diodes (LEDs).

AB - In this work Sm3+ (0-2.0 at%) and Bi3+ (0-2.0 at%) doped Y2O3 luminescent powders were prepared by a sol-gel method from yttrium acetylacetonate, samarium and bismuth nitrates as metal sources. The as prepared powders (chemical composition is close to stoichiometric Y2O3) present the cubic structure from 700 °C, and at 900 °C are characterized by the presence of rounded particles with heterogeneous size of 42.9 nm. Luminescent effect of ions of Sm3+ and Bi3+ into Y2O3 host as was studied on heat treated powders from 800 to 1100 °C. The combination of the red luminescence from the Sm3+ ions and the bluish from Bi3+, makes the synthesized phosphors candidates to be used in fabrication of phosphor-converted light-emitting diodes (LEDs).

KW - D. YO

KW - Phosphors

KW - Sm-Bi

KW - Sol-gel

KW - White light

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U2 - 10.1016/j.ceramint.2015.03.054

DO - 10.1016/j.ceramint.2015.03.054

M3 - Artículo

SN - 0272-8842

VL - 41

SP - 8481

EP - 8487

JO - Ceramics International

JF - Ceramics International

IS - 7

ER -

White luminescence of bismuth and samarium codoped Y₂O₃ phosphors

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Keywords

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