CaSc2O4:Eu3+: A Tunable Full-Color Emitting Phosphor for White Light Emitting Diodes

Zhendong Hao; Jiahua Zhang; Xia Zhang; Xiaojun Wang

doi:10.1016/j.optmat.2010.09.035

CaSc₂O₄:Eu³⁺: A Tunable Full-Color Emitting Phosphor for White Light Emitting Diodes

Zhendong Hao
, Jiahua Zhang
, Xia Zhang
, Xiaojun Wang

Biochemistry, Chemistry & Physics

CAS - Changchun Institute of Optics Fine Mechanics and Physics

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

70 Scopus citations

Abstract

We report an intense full-color emission originating from ⁵D_0,1,2,3 to ⁷F_0,1,2,3,4 transitions of Eu³⁺ in CaSc₂O₄ upon 395 nm excitation. The emission spectra vary with increasing Eu³⁺ concentration, demonstrating tunable color coordinates from white to red region in the CIE chromaticity diagram. Considering the relaxation from ⁵D_J to ⁵D_J-1 through cross energy transfer, the Eu³⁺ concentration dependent emission spectra are well simulated based on the analysis of steady state rate equations and the measured lifetimes of the ⁵D_J levels. It is suggested that CaSc ₂O₄:Eu³⁺ could be a potential single-phased full-color emitting phosphor for near-ultraviolet InGaN chip pumped white light emitting diodes.

Original language	American English
Journal	Optical Materials
Volume	33
DOIs	https://doi.org/10.1016/j.optmat.2010.09.035
State	Published - Jan 1 2011

Disciplines

Physics

Keywords

CaSc2O4; Eu3+
Full color

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http://dx.doi.org/10.1016/j.optmat.2010.09.035

Cite this

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title = "CaSc2O4:Eu3+: A Tunable Full-Color Emitting Phosphor for White Light Emitting Diodes",

abstract = "We report an intense full-color emission originating from 5D0,1,2,3 to 7F0,1,2,3,4 transitions of Eu3+ in CaSc2O4 upon 395 nm excitation. The emission spectra vary with increasing Eu3+ concentration, demonstrating tunable color coordinates from white to red region in the CIE chromaticity diagram. Considering the relaxation from 5DJ to 5DJ-1 through cross energy transfer, the Eu3+ concentration dependent emission spectra are well simulated based on the analysis of steady state rate equations and the measured lifetimes of the 5DJ levels. It is suggested that CaSc 2O4:Eu3+ could be a potential single-phased full-color emitting phosphor for near-ultraviolet InGaN chip pumped white light emitting diodes.",

keywords = "CaSc2O4; Eu3+, Full color",

author = "Zhendong Hao and Jiahua Zhang and Xia Zhang and Xiaojun Wang",

year = "2011",

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TY - JOUR

T1 - CaSc2O4:Eu3+: A Tunable Full-Color Emitting Phosphor for White Light Emitting Diodes

AU - Hao, Zhendong

AU - Zhang, Jiahua

AU - Zhang, Xia

AU - Wang, Xiaojun

PY - 2011/1/1

Y1 - 2011/1/1

N2 - We report an intense full-color emission originating from 5D0,1,2,3 to 7F0,1,2,3,4 transitions of Eu3+ in CaSc2O4 upon 395 nm excitation. The emission spectra vary with increasing Eu3+ concentration, demonstrating tunable color coordinates from white to red region in the CIE chromaticity diagram. Considering the relaxation from 5DJ to 5DJ-1 through cross energy transfer, the Eu3+ concentration dependent emission spectra are well simulated based on the analysis of steady state rate equations and the measured lifetimes of the 5DJ levels. It is suggested that CaSc 2O4:Eu3+ could be a potential single-phased full-color emitting phosphor for near-ultraviolet InGaN chip pumped white light emitting diodes.

AB - We report an intense full-color emission originating from 5D0,1,2,3 to 7F0,1,2,3,4 transitions of Eu3+ in CaSc2O4 upon 395 nm excitation. The emission spectra vary with increasing Eu3+ concentration, demonstrating tunable color coordinates from white to red region in the CIE chromaticity diagram. Considering the relaxation from 5DJ to 5DJ-1 through cross energy transfer, the Eu3+ concentration dependent emission spectra are well simulated based on the analysis of steady state rate equations and the measured lifetimes of the 5DJ levels. It is suggested that CaSc 2O4:Eu3+ could be a potential single-phased full-color emitting phosphor for near-ultraviolet InGaN chip pumped white light emitting diodes.

KW - CaSc2O4; Eu3+

KW - Full color

UR - https://digitalcommons.georgiasouthern.edu/physics-facpubs/60

UR - http://dx.doi.org/10.1016/j.optmat.2010.09.035

U2 - 10.1016/j.optmat.2010.09.035

DO - 10.1016/j.optmat.2010.09.035

M3 - Article

SN - 0925-3467

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JO - Optical Materials

JF - Optical Materials

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