Yellow-Emitting (Ca2Lu1-xCex)(ScMg)Si3O12 Phosphor and Its Application for White LEDs

Xia Zhang; Yongfu Liu; Zhendong Hao; Yongshi Luo; Xiaojun Wang; Jiahua Zhang

doi:10.1016/j.materresbull.2012.02.013

Yellow-Emitting (Ca₂Lu_1-xCe_x)(ScMg)Si₃O₁₂ Phosphor and Its Application for White LEDs

Xia Zhang, Yongfu Liu, Zhendong Hao, Yongshi Luo, Xiaojun Wang, Jiahua Zhang

Biochemistry, Chemistry & Physics

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

26 Scopus citations

Abstract

Luminescence properties of the yellow-emitting (Ca ₂Lu _1-xCe _x)(ScMg)Si ₃O ₁₂ (CLSM:xCe ³⁺ x = 0.01-0.15) phosphor are investigated for various Ce ³⁺ concentrations. Different Ce ³⁺ emission sites and energy transfers between them are observed, resulting in a red shift of the emission spectra from 530 to 575 nm with increasing x from 0.01 to 0.15. Combining with blue (460 nm) InGaN LEDs, CLSM:Ce ³⁺ shows excellent performances for phosphor-converted white LEDs with higher color rendering index R _a of 87.4-87.9 and lower color temperature T _C of 5034-5814 K, especially for warm pcWLEDs with a high color rendering (R _a > 80) and a low color temperature (T _C < 4000 K). Thermal quenching behaviors depending on Ce ³⁺ concentrations and temperatures are discussed.

Original language	American English
Journal	Materials Research Bulletin
Volume	47
DOIs	https://doi.org/10.1016/j.materresbull.2012.02.013
State	Published - May 1 2012

Disciplines

Physics

Keywords

Inorganic compounds
Luminescence
Optical materials
Optical properties

Access to Document

10.1016/j.materresbull.2012.02.013License: Unspecified

http://dx.doi.org/10.1016/j.materresbull.2012.02.013

Cite this

@article{60af2ac510e14ce6b993a3a2d7c5dbd4,

title = "Yellow-Emitting (Ca2Lu1-xCex)(ScMg)Si3O12 Phosphor and Its Application for White LEDs",

abstract = "Luminescence properties of the yellow-emitting (Ca 2Lu 1-xCe x)(ScMg)Si 3O 12 (CLSM:xCe 3+ x = 0.01-0.15) phosphor are investigated for various Ce 3+ concentrations. Different Ce 3+ emission sites and energy transfers between them are observed, resulting in a red shift of the emission spectra from 530 to 575 nm with increasing x from 0.01 to 0.15. Combining with blue (460 nm) InGaN LEDs, CLSM:Ce 3+ shows excellent performances for phosphor-converted white LEDs with higher color rendering index R a of 87.4-87.9 and lower color temperature T C of 5034-5814 K, especially for warm pcWLEDs with a high color rendering (R a > 80) and a low color temperature (T C < 4000 K). Thermal quenching behaviors depending on Ce 3+ concentrations and temperatures are discussed.",

keywords = "Inorganic compounds, Luminescence, Optical materials, Optical properties",

author = "Xia Zhang and Yongfu Liu and Zhendong Hao and Yongshi Luo and Xiaojun Wang and Jiahua Zhang",

year = "2012",

month = may,

day = "1",

doi = "10.1016/j.materresbull.2012.02.013",

language = "American English",

volume = "47",

journal = "Materials Research Bulletin",

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TY - JOUR

T1 - Yellow-Emitting (Ca2Lu1-xCex)(ScMg)Si3O12 Phosphor and Its Application for White LEDs

AU - Zhang, Xia

AU - Liu, Yongfu

AU - Hao, Zhendong

AU - Luo, Yongshi

AU - Wang, Xiaojun

AU - Zhang, Jiahua

PY - 2012/5/1

Y1 - 2012/5/1

N2 - Luminescence properties of the yellow-emitting (Ca 2Lu 1-xCe x)(ScMg)Si 3O 12 (CLSM:xCe 3+ x = 0.01-0.15) phosphor are investigated for various Ce 3+ concentrations. Different Ce 3+ emission sites and energy transfers between them are observed, resulting in a red shift of the emission spectra from 530 to 575 nm with increasing x from 0.01 to 0.15. Combining with blue (460 nm) InGaN LEDs, CLSM:Ce 3+ shows excellent performances for phosphor-converted white LEDs with higher color rendering index R a of 87.4-87.9 and lower color temperature T C of 5034-5814 K, especially for warm pcWLEDs with a high color rendering (R a > 80) and a low color temperature (T C < 4000 K). Thermal quenching behaviors depending on Ce 3+ concentrations and temperatures are discussed.

AB - Luminescence properties of the yellow-emitting (Ca 2Lu 1-xCe x)(ScMg)Si 3O 12 (CLSM:xCe 3+ x = 0.01-0.15) phosphor are investigated for various Ce 3+ concentrations. Different Ce 3+ emission sites and energy transfers between them are observed, resulting in a red shift of the emission spectra from 530 to 575 nm with increasing x from 0.01 to 0.15. Combining with blue (460 nm) InGaN LEDs, CLSM:Ce 3+ shows excellent performances for phosphor-converted white LEDs with higher color rendering index R a of 87.4-87.9 and lower color temperature T C of 5034-5814 K, especially for warm pcWLEDs with a high color rendering (R a > 80) and a low color temperature (T C < 4000 K). Thermal quenching behaviors depending on Ce 3+ concentrations and temperatures are discussed.

KW - Inorganic compounds

KW - Luminescence

KW - Optical materials

KW - Optical properties

UR - https://digitalcommons.georgiasouthern.edu/physics-facpubs/46

UR - http://dx.doi.org/10.1016/j.materresbull.2012.02.013

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DO - 10.1016/j.materresbull.2012.02.013

M3 - Article

SN - 0025-5408

VL - 47

JO - Materials Research Bulletin

JF - Materials Research Bulletin

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