Near UV and blue-based LED fabricated with Ca8Zn(SiO 4)4Cl2:Eu2+ as green-emitting phosphor

Wei Lü; Zhendong Hao; Xia Zhang; Xiaojun Wang; Jiahua Zhang

doi:10.1016/j.optmat.2011.08.026

Near UV and blue-based LED fabricated with Ca₈Zn(SiO ₄)₄Cl₂:Eu²⁺ as green-emitting phosphor

Wei Lü, Zhendong Hao, Xia Zhang, Xiaojun Wang, Jiahua Zhang

Biochemistry, Chemistry & Physics

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

13 Scopus citations

Abstract

Green-emitting phosphor Ca₈Zn(SiO₄) ₄Cl₂:Eu²⁺ has been prepared by the solid state reaction method and there luminescence properties are investigated. The excitation spectrum of Ca₈Zn(SiO₄)₄Cl ₂:Eu²⁺ shows an intense excitation band in the blue centered at 450 nm and emits with a maximum at 505 nm. The concentration quenching mechanism is studied and verified to be the energy transfer among the nearest-neighbor ions. Upon 450 nm excitation, the emission intensity of Ca ₈Zn(SiO₄)₄Cl₂:Eu²⁺ is much stronger than the green emitting Ca₃SO₄Cl ₂:Eu²⁺ phosphor and even higher than YAG:Ce³⁺. This excitation spectrum range matches UV and blue light-emitting diodes (LEDS) chips very well, suggesting Ca₈Zn(SiO₄)₄Cl ₂:Eu²⁺ could be a promising green emitting phosphor candidate for LED devices.

Original language	English
Pages (from-to)	261-264
Number of pages	4
Journal	Optical Materials
Volume	34
Issue number	1
DOIs	https://doi.org/10.1016/j.optmat.2011.08.026
State	Published - Nov 2011

Scopus Subject Areas

Electronic, Optical and Magnetic Materials
Atomic and Molecular Physics, and Optics
Spectroscopy
Physical and Theoretical Chemistry
Organic Chemistry
Inorganic Chemistry
Electrical and Electronic Engineering

Keywords

LED devices
Luminescence properties
Phosphor

Access to Document

10.1016/j.optmat.2011.08.026

Cite this

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title = "Near UV and blue-based LED fabricated with Ca8Zn(SiO 4)4Cl2:Eu2+ as green-emitting phosphor",

abstract = "Green-emitting phosphor Ca8Zn(SiO4) 4Cl2:Eu2+ has been prepared by the solid state reaction method and there luminescence properties are investigated. The excitation spectrum of Ca8Zn(SiO4)4Cl 2:Eu2+ shows an intense excitation band in the blue centered at 450 nm and emits with a maximum at 505 nm. The concentration quenching mechanism is studied and verified to be the energy transfer among the nearest-neighbor ions. Upon 450 nm excitation, the emission intensity of Ca 8Zn(SiO4)4Cl2:Eu2+ is much stronger than the green emitting Ca3SO4Cl 2:Eu2+ phosphor and even higher than YAG:Ce3+. This excitation spectrum range matches UV and blue light-emitting diodes (LEDS) chips very well, suggesting Ca8Zn(SiO4)4Cl 2:Eu2+ could be a promising green emitting phosphor candidate for LED devices.",

keywords = "LED devices, Luminescence properties, Phosphor",

author = "Wei L{\"u} and Zhendong Hao and Xia Zhang and Xiaojun Wang and Jiahua Zhang",

year = "2011",

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doi = "10.1016/j.optmat.2011.08.026",

language = "English",

volume = "34",

pages = "261--264",

journal = "Optical Materials",

issn = "0925-3467",

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TY - JOUR

T1 - Near UV and blue-based LED fabricated with Ca8Zn(SiO 4)4Cl2:Eu2+ as green-emitting phosphor

AU - Lü, Wei

AU - Hao, Zhendong

AU - Zhang, Xia

AU - Wang, Xiaojun

AU - Zhang, Jiahua

PY - 2011/11

Y1 - 2011/11

N2 - Green-emitting phosphor Ca8Zn(SiO4) 4Cl2:Eu2+ has been prepared by the solid state reaction method and there luminescence properties are investigated. The excitation spectrum of Ca8Zn(SiO4)4Cl 2:Eu2+ shows an intense excitation band in the blue centered at 450 nm and emits with a maximum at 505 nm. The concentration quenching mechanism is studied and verified to be the energy transfer among the nearest-neighbor ions. Upon 450 nm excitation, the emission intensity of Ca 8Zn(SiO4)4Cl2:Eu2+ is much stronger than the green emitting Ca3SO4Cl 2:Eu2+ phosphor and even higher than YAG:Ce3+. This excitation spectrum range matches UV and blue light-emitting diodes (LEDS) chips very well, suggesting Ca8Zn(SiO4)4Cl 2:Eu2+ could be a promising green emitting phosphor candidate for LED devices.

AB - Green-emitting phosphor Ca8Zn(SiO4) 4Cl2:Eu2+ has been prepared by the solid state reaction method and there luminescence properties are investigated. The excitation spectrum of Ca8Zn(SiO4)4Cl 2:Eu2+ shows an intense excitation band in the blue centered at 450 nm and emits with a maximum at 505 nm. The concentration quenching mechanism is studied and verified to be the energy transfer among the nearest-neighbor ions. Upon 450 nm excitation, the emission intensity of Ca 8Zn(SiO4)4Cl2:Eu2+ is much stronger than the green emitting Ca3SO4Cl 2:Eu2+ phosphor and even higher than YAG:Ce3+. This excitation spectrum range matches UV and blue light-emitting diodes (LEDS) chips very well, suggesting Ca8Zn(SiO4)4Cl 2:Eu2+ could be a promising green emitting phosphor candidate for LED devices.

KW - LED devices

KW - Luminescence properties

KW - Phosphor

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