Low temperature quenching and high efficiency Tm3+, La 3+ or Tb3+ co-doped CaSc2O4:Ce 3+ phosphors for light-emitting diodes

Yibo Chen; Kok Wai Cheah; Menglian Gong

doi:10.1016/j.jlumin.2011.04.030

Low temperature quenching and high efficiency Tm³⁺, La ³⁺ or Tb³⁺ co-doped CaSc₂O₄:Ce ³⁺ phosphors for light-emitting diodes

Yibo Chen^*, Kok Wai Cheah, Menglian Gong

^*Corresponding author for this work

Department of Physics

Research output: Contribution to journal › Journal article › peer-review

21 Citations (Scopus)

Abstract

Low temperature quenching and high efficiency CaSc₂O ₄:Ce³⁺ (CSO:Ce³⁺) phosphors co-doped with Tm³⁺, La³⁺ and Tb³⁺ ions were prepared by a solid state method and the phase-forming, morphology, luminescence and application properties of these phosphors were investigated. The results showed that co-doping of Tm³⁺, La³⁺ and Tb³⁺ ions can improve the luminescence properties and decrease temperature quenching of CSO:Ce³⁺ phosphor remarkably. High efficiency green-light-emitting diodes were fabricated with the prepared phosphors and InGaN blue-emitting (∼460 nm) chips. The good performances of the green-light-emitting LEDs made from co-doped CSO:Ce³⁺ phosphors confirm the luminescence enhancement and indicate that Tm³⁺, La³⁺ and Tb ³⁺ co-doped CSO:Ce³⁺ phosphors are suitable candidates for the fabrication of high efficiency white LEDs.

Original language	English
Pages (from-to)	1770-1775
Number of pages	6
Journal	Journal of Luminescence
Volume	131
Issue number	8
DOIs	https://doi.org/10.1016/j.jlumin.2011.04.030
Publication status	Published - Aug 2011

Scopus Subject Areas

Biophysics
Biochemistry
Chemistry(all)
Atomic and Molecular Physics, and Optics
Condensed Matter Physics

User-Defined Keywords

CaScO:Ce
Co-doping
LED
Phosphor

Access to Document

10.1016/j.jlumin.2011.04.030

Cite this

@article{d9f4f81fd1f944eb88101c7c155b78b6,

title = "Low temperature quenching and high efficiency Tm3+, La 3+ or Tb3+ co-doped CaSc2O4:Ce 3+ phosphors for light-emitting diodes",

abstract = "Low temperature quenching and high efficiency CaSc2O 4:Ce3+ (CSO:Ce3+) phosphors co-doped with Tm3+, La3+ and Tb3+ ions were prepared by a solid state method and the phase-forming, morphology, luminescence and application properties of these phosphors were investigated. The results showed that co-doping of Tm3+, La3+ and Tb3+ ions can improve the luminescence properties and decrease temperature quenching of CSO:Ce3+ phosphor remarkably. High efficiency green-light-emitting diodes were fabricated with the prepared phosphors and InGaN blue-emitting (∼460 nm) chips. The good performances of the green-light-emitting LEDs made from co-doped CSO:Ce3+ phosphors confirm the luminescence enhancement and indicate that Tm3+, La3+ and Tb 3+ co-doped CSO:Ce3+ phosphors are suitable candidates for the fabrication of high efficiency white LEDs.",

keywords = "CaScO:Ce, Co-doping, LED, Phosphor",

author = "Yibo Chen and {Wai Cheah}, Kok and Menglian Gong",

note = "Funding Information: This work is financially supported by Foundation for Distinguished Young Talents in Higher Education of Guangdong, China (Grant no. LYM10107 ) and the Project ( ITS/477/09 ) of Hong Kong Innovation and Technology Commission .",

year = "2011",

month = aug,

doi = "10.1016/j.jlumin.2011.04.030",

language = "English",

volume = "131",

pages = "1770--1775",

journal = "Journal of Luminescence",

issn = "0022-2313",

publisher = "Elsevier",

number = "8",

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TY - JOUR

T1 - Low temperature quenching and high efficiency Tm3+, La 3+ or Tb3+ co-doped CaSc2O4:Ce 3+ phosphors for light-emitting diodes

AU - Chen, Yibo

AU - Wai Cheah, Kok

AU - Gong, Menglian

N1 - Funding Information: This work is financially supported by Foundation for Distinguished Young Talents in Higher Education of Guangdong, China (Grant no. LYM10107 ) and the Project ( ITS/477/09 ) of Hong Kong Innovation and Technology Commission .

PY - 2011/8

Y1 - 2011/8

N2 - Low temperature quenching and high efficiency CaSc2O 4:Ce3+ (CSO:Ce3+) phosphors co-doped with Tm3+, La3+ and Tb3+ ions were prepared by a solid state method and the phase-forming, morphology, luminescence and application properties of these phosphors were investigated. The results showed that co-doping of Tm3+, La3+ and Tb3+ ions can improve the luminescence properties and decrease temperature quenching of CSO:Ce3+ phosphor remarkably. High efficiency green-light-emitting diodes were fabricated with the prepared phosphors and InGaN blue-emitting (∼460 nm) chips. The good performances of the green-light-emitting LEDs made from co-doped CSO:Ce3+ phosphors confirm the luminescence enhancement and indicate that Tm3+, La3+ and Tb 3+ co-doped CSO:Ce3+ phosphors are suitable candidates for the fabrication of high efficiency white LEDs.

AB - Low temperature quenching and high efficiency CaSc2O 4:Ce3+ (CSO:Ce3+) phosphors co-doped with Tm3+, La3+ and Tb3+ ions were prepared by a solid state method and the phase-forming, morphology, luminescence and application properties of these phosphors were investigated. The results showed that co-doping of Tm3+, La3+ and Tb3+ ions can improve the luminescence properties and decrease temperature quenching of CSO:Ce3+ phosphor remarkably. High efficiency green-light-emitting diodes were fabricated with the prepared phosphors and InGaN blue-emitting (∼460 nm) chips. The good performances of the green-light-emitting LEDs made from co-doped CSO:Ce3+ phosphors confirm the luminescence enhancement and indicate that Tm3+, La3+ and Tb 3+ co-doped CSO:Ce3+ phosphors are suitable candidates for the fabrication of high efficiency white LEDs.

KW - CaScO:Ce

KW - Co-doping

KW - LED

KW - Phosphor

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