Intense violet-blue emitting (CaCl2/SiO2): Eu 2+ phosphor powders for applications in UV-LED based phototherapy illuminators

Zhendong Hao; Jiahua Zhang; Xia Zhang; Xinguang Ren; Yongshi Luo; Shaozhe Lu; Xiaojun Wang

doi:10.1088/0022-3727/41/18/182001

Intense violet-blue emitting (CaCl₂/SiO₂): Eu ²⁺ phosphor powders for applications in UV-LED based phototherapy illuminators

Zhendong Hao, Jiahua Zhang, Xia Zhang, Xinguang Ren, Yongshi Luo, Shaozhe Lu, Xiaojun Wang

Biochemistry, Chemistry & Physics

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

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Abstract

An intense violet-blue emitting (CaCl₂/SiO₂) : Eu²⁺ phosphor with a composition of 25% CaCl₂ and 75% SiO₂ is prepared by a solid state reaction. The phosphor emits at 427 nm with a narrow bandwidth of 21 nm. The photoluminescence (PL) intensities and fluorescence lifetimes are studied as a function of Eu²⁺ concentrations. It is observed that the PL intensity of (CaCl ₂/SiO₂) : Eu²⁺ can be 30% higher than that of commercial Sr₂P₂O₇ : Eu²⁺ phosphor under 395 nm excitation. (CaCl₂/SiO₂) : Eu²⁺ would be a promising new phosphor for converting near-ultraviolet radiation to violet-blue emission for a novel phototherapy illuminator using a near-ultraviolet (∼395 nm) light emitting diode as the excitation source.

Original language	English
Article number	182001
Journal	Journal of Physics D: Applied Physics
Volume	41
Issue number	18
DOIs	https://doi.org/10.1088/0022-3727/41/18/182001
State	Published - Sep 21 2008

Scopus Subject Areas

Electronic, Optical and Magnetic Materials
Condensed Matter Physics
Acoustics and Ultrasonics
Surfaces, Coatings and Films

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10.1088/0022-3727/41/18/182001

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title = "Intense violet-blue emitting (CaCl2/SiO2): Eu 2+ phosphor powders for applications in UV-LED based phototherapy illuminators",

abstract = "An intense violet-blue emitting (CaCl2/SiO2) : Eu2+ phosphor with a composition of 25% CaCl2 and 75% SiO2 is prepared by a solid state reaction. The phosphor emits at 427 nm with a narrow bandwidth of 21 nm. The photoluminescence (PL) intensities and fluorescence lifetimes are studied as a function of Eu2+ concentrations. It is observed that the PL intensity of (CaCl 2/SiO2) : Eu2+ can be 30% higher than that of commercial Sr2P2O7 : Eu2+ phosphor under 395 nm excitation. (CaCl2/SiO2) : Eu2+ would be a promising new phosphor for converting near-ultraviolet radiation to violet-blue emission for a novel phototherapy illuminator using a near-ultraviolet (∼395 nm) light emitting diode as the excitation source.",

author = "Zhendong Hao and Jiahua Zhang and Xia Zhang and Xinguang Ren and Yongshi Luo and Shaozhe Lu and Xiaojun Wang",

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T1 - Intense violet-blue emitting (CaCl2/SiO2)

T2 - Eu 2+ phosphor powders for applications in UV-LED based phototherapy illuminators

AU - Hao, Zhendong

AU - Zhang, Jiahua

AU - Zhang, Xia

AU - Ren, Xinguang

AU - Luo, Yongshi

AU - Lu, Shaozhe

AU - Wang, Xiaojun

PY - 2008/9/21

Y1 - 2008/9/21

N2 - An intense violet-blue emitting (CaCl2/SiO2) : Eu2+ phosphor with a composition of 25% CaCl2 and 75% SiO2 is prepared by a solid state reaction. The phosphor emits at 427 nm with a narrow bandwidth of 21 nm. The photoluminescence (PL) intensities and fluorescence lifetimes are studied as a function of Eu2+ concentrations. It is observed that the PL intensity of (CaCl 2/SiO2) : Eu2+ can be 30% higher than that of commercial Sr2P2O7 : Eu2+ phosphor under 395 nm excitation. (CaCl2/SiO2) : Eu2+ would be a promising new phosphor for converting near-ultraviolet radiation to violet-blue emission for a novel phototherapy illuminator using a near-ultraviolet (∼395 nm) light emitting diode as the excitation source.

AB - An intense violet-blue emitting (CaCl2/SiO2) : Eu2+ phosphor with a composition of 25% CaCl2 and 75% SiO2 is prepared by a solid state reaction. The phosphor emits at 427 nm with a narrow bandwidth of 21 nm. The photoluminescence (PL) intensities and fluorescence lifetimes are studied as a function of Eu2+ concentrations. It is observed that the PL intensity of (CaCl 2/SiO2) : Eu2+ can be 30% higher than that of commercial Sr2P2O7 : Eu2+ phosphor under 395 nm excitation. (CaCl2/SiO2) : Eu2+ would be a promising new phosphor for converting near-ultraviolet radiation to violet-blue emission for a novel phototherapy illuminator using a near-ultraviolet (∼395 nm) light emitting diode as the excitation source.

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Intense violet-blue emitting (CaCl₂/SiO₂): Eu ²⁺ phosphor powders for applications in UV-LED based phototherapy illuminators

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