Crystal structure and luminescence properties of (Ca2.94-xLuxCe0.06) (ScMg)Si3O12 phosphors for white LEDs

Yong Fu Liu; Xia Zhang; Zhen Dong Hao; Xiao Jun Wang; Jia Hua Zhang

doi:10.3788/fgxb20113205.0445

Crystal structure and luminescence properties of (Ca_2.94-xLu_xCe_0.06) (ScMg)Si₃O₁₂ phosphors for white LEDs

Yong Fu Liu, Xia Zhang, Zhen Dong Hao, Xiao Jun Wang, Jia Hua Zhang

Biochemistry, Chemistry, & Physics

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

18 Scopus citations

Abstract

Lu modified (Ca_2.94-xLu_xCe_0.06) (ScMg)Si₃O₁₂ (CLSMS:Ce³⁺) yellow emitting phosphors are prepared by solid-state reaction. The effects of Lu content on crystal phase formation, luminescence properties and temperature characteristics are studied. It is revealed that the Lu induced luminescent enhancement can be attributed to the increase of absorbance of Ce³⁺ rather than the internal quantum efficiency. Intense and broadband emission is realized by controlling the Lu content to obtain a pure CLSMS crystal phase. The maximum luminescence intensity is obtained at x=0.54, which is as high as 156% of the Lu free phosphor. Combining the present phosphor with a blue LED chip, a white LED with an excellent color rendering index of 86 and high luminous efficiency of 86 lm·W^-1 is obtained.

Original language	English
Pages (from-to)	445-450
Number of pages	6
Journal	Chinese Journal of Luminescence
Volume	32
Issue number	5
DOIs	https://doi.org/10.3788/fgxb20113205.0445
State	Published - May 2011

Keywords

Silicate
White LED
Yellow phosphor

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10.3788/fgxb20113205.0445

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title = "Crystal structure and luminescence properties of (Ca2.94-xLuxCe0.06) (ScMg)Si3O12 phosphors for white LEDs",

abstract = "Lu modified (Ca2.94-xLuxCe0.06) (ScMg)Si3O12 (CLSMS:Ce3+) yellow emitting phosphors are prepared by solid-state reaction. The effects of Lu content on crystal phase formation, luminescence properties and temperature characteristics are studied. It is revealed that the Lu induced luminescent enhancement can be attributed to the increase of absorbance of Ce3+ rather than the internal quantum efficiency. Intense and broadband emission is realized by controlling the Lu content to obtain a pure CLSMS crystal phase. The maximum luminescence intensity is obtained at x=0.54, which is as high as 156% of the Lu free phosphor. Combining the present phosphor with a blue LED chip, a white LED with an excellent color rendering index of 86 and high luminous efficiency of 86 lm·W-1 is obtained.",

keywords = "Silicate, White LED, Yellow phosphor",

author = "Liu, {Yong Fu} and Xia Zhang and Hao, {Zhen Dong} and Wang, {Xiao Jun} and Zhang, {Jia Hua}",

year = "2011",

month = may,

doi = "10.3788/fgxb20113205.0445",

language = "English",

volume = "32",

pages = "445--450",

journal = "Chinese Journal of Luminescence",

issn = "1000-7032",

publisher = "Chines Academy of Sciences",

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TY - JOUR

T1 - Crystal structure and luminescence properties of (Ca2.94-xLuxCe0.06) (ScMg)Si3O12 phosphors for white LEDs

AU - Liu, Yong Fu

AU - Zhang, Xia

AU - Hao, Zhen Dong

AU - Wang, Xiao Jun

AU - Zhang, Jia Hua

PY - 2011/5

Y1 - 2011/5

N2 - Lu modified (Ca2.94-xLuxCe0.06) (ScMg)Si3O12 (CLSMS:Ce3+) yellow emitting phosphors are prepared by solid-state reaction. The effects of Lu content on crystal phase formation, luminescence properties and temperature characteristics are studied. It is revealed that the Lu induced luminescent enhancement can be attributed to the increase of absorbance of Ce3+ rather than the internal quantum efficiency. Intense and broadband emission is realized by controlling the Lu content to obtain a pure CLSMS crystal phase. The maximum luminescence intensity is obtained at x=0.54, which is as high as 156% of the Lu free phosphor. Combining the present phosphor with a blue LED chip, a white LED with an excellent color rendering index of 86 and high luminous efficiency of 86 lm·W-1 is obtained.

AB - Lu modified (Ca2.94-xLuxCe0.06) (ScMg)Si3O12 (CLSMS:Ce3+) yellow emitting phosphors are prepared by solid-state reaction. The effects of Lu content on crystal phase formation, luminescence properties and temperature characteristics are studied. It is revealed that the Lu induced luminescent enhancement can be attributed to the increase of absorbance of Ce3+ rather than the internal quantum efficiency. Intense and broadband emission is realized by controlling the Lu content to obtain a pure CLSMS crystal phase. The maximum luminescence intensity is obtained at x=0.54, which is as high as 156% of the Lu free phosphor. Combining the present phosphor with a blue LED chip, a white LED with an excellent color rendering index of 86 and high luminous efficiency of 86 lm·W-1 is obtained.

KW - Silicate

KW - White LED

KW - Yellow phosphor

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U2 - 10.3788/fgxb20113205.0445

DO - 10.3788/fgxb20113205.0445

M3 - Article

AN - SCOPUS:79959625941

SN - 1000-7032

VL - 32

SP - 445

EP - 450

JO - Chinese Journal of Luminescence

JF - Chinese Journal of Luminescence

IS - 5

ER -

Crystal structure and luminescence properties of (Ca_2.94-xLu_xCe_0.06) (ScMg)Si₃O₁₂ phosphors for white LEDs

Abstract

Keywords

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