Luminescent properties of a novel green-emitting gallium borate phosphor under vacuum ultraviolet excitation

Kyoungun Kim; Young Min Moon; Sungho Choi; Ha Kyun Jung; Sahn Nahm

doi:10.1016/j.matlet.2008.04.085

Luminescent properties of a novel green-emitting gallium borate phosphor under vacuum ultraviolet excitation

Kyoungun Kim, Young Min Moon, Sungho Choi, Ha Kyun Jung, Sahn Nahm

Department of Materials Science and Engineering

Research output: Contribution to journal › Article

33 Citations (Scopus)

Abstract

Vacuum ultraviolet (VUV) excitation and emission properties of a new Tb³⁺-activated green-emitting phosphor with huntite-type gallium borate, LnGa₃(BO₃)₄:Tb³⁺ (Ln = Y, Gd), are investigated. Overall absorption bands are in the range of 120-250 nm and can be tentatively interpreted in terms of the charge transfer transition from host to rare earth ions and the Tb³⁺ activator. Additionally, an appropriate atomic ratio of Y³⁺/Gd³⁺ in the host compound enhances both the excitation and emission efficiency under VUV excitation. Enhanced absorption efficiency for the VUV light makes these novel phosphors the prominent luminescent materials with plasma-discharge conditions, by converting the VUV radiation to the visible light.

Original language	English
Pages (from-to)	3925-3927
Number of pages	3
Journal	Materials Letters
Volume	62
Issue number	24
DOIs	https://doi.org/10.1016/j.matlet.2008.04.085
Publication status	Published - 2008 Sep 15

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Keywords

Borates
Phosphors
VUV

ASJC Scopus subject areas

Materials Science(all)

Cite this

Kim, K., Moon, Y. M., Choi, S., Jung, H. K., & Nahm, S. (2008). Luminescent properties of a novel green-emitting gallium borate phosphor under vacuum ultraviolet excitation. Materials Letters, 62(24), 3925-3927. https://doi.org/10.1016/j.matlet.2008.04.085

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abstract = "Vacuum ultraviolet (VUV) excitation and emission properties of a new Tb3+-activated green-emitting phosphor with huntite-type gallium borate, LnGa3(BO3)4:Tb3+ (Ln = Y, Gd), are investigated. Overall absorption bands are in the range of 120-250 nm and can be tentatively interpreted in terms of the charge transfer transition from host to rare earth ions and the Tb3+ activator. Additionally, an appropriate atomic ratio of Y3+/Gd3+ in the host compound enhances both the excitation and emission efficiency under VUV excitation. Enhanced absorption efficiency for the VUV light makes these novel phosphors the prominent luminescent materials with plasma-discharge conditions, by converting the VUV radiation to the visible light.",

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AU - Nahm, Sahn

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AB - Vacuum ultraviolet (VUV) excitation and emission properties of a new Tb3+-activated green-emitting phosphor with huntite-type gallium borate, LnGa3(BO3)4:Tb3+ (Ln = Y, Gd), are investigated. Overall absorption bands are in the range of 120-250 nm and can be tentatively interpreted in terms of the charge transfer transition from host to rare earth ions and the Tb3+ activator. Additionally, an appropriate atomic ratio of Y3+/Gd3+ in the host compound enhances both the excitation and emission efficiency under VUV excitation. Enhanced absorption efficiency for the VUV light makes these novel phosphors the prominent luminescent materials with plasma-discharge conditions, by converting the VUV radiation to the visible light.

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10.1016/j.matlet.2008.04.085