Crystal structure and pale-yellow emitting properties of K3Gd1–x
Dy
x
B6O12 solid solutions
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Published:2019-10-04
Issue:11
Volume:75
Page:1494-1501
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ISSN:2053-2296
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Container-title:Acta Crystallographica Section C Structural Chemistry
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language:
-
Short-container-title:Acta Crystallogr C
Author:
Zhang Rui-Juan,Shi Jian-Chao,Zhao Dan-Dan,Han Xiao-Yang,Deng Ling,Cui Xiao-Qi,Zhao Dan
Abstract
A new potassium dysprosium polyborate, K3DyB6O12, has been prepared via the high-temperature molten salt method and structurally characterized by single-crystal X-ray diffraction analysis. The structure can be described as a three-dimensional framework composed of isolated bicyclic [B5O10]5− groups and Dy3+ and K+ ions. The Fourier transform IR (FT–IR) and ultraviolet–visible (UV–Vis) spectra were investigated. A series of K3Gd1–x
Dy
x
B6O12 phosphors was prepared and their photoluminescence properties were studied. The K3Gd1–x
Dy
x
B6O12 phosphors exhibit a strong yellow emission band at 577 nm (the 4F9/2→6H13/2 transition of Dy3+) under UV excitation of 275 nm (the 8S7/2→6I
J
transition of Gd3+), suggesting the occurrence of the energy transfer Gd3+→Dy3+. The optimized doping concentration of the Dy3+ ion was 8 mol%. We may expect that K3Gd1–x
Dy
x
B6O12 is a promising pale-yellow emission phosphor for visual displays or solid-state lighting.
Funder
National Natural Science Foundation of China
The Program for Innovative Research Team (in Science and Technology) in the University of Henan Province
Henan Natural Science Foundation of China
The Fundamental Research Funds for the Universities of Henan Province
Key research project of Henan Province Office of Education
Publisher
International Union of Crystallography (IUCr)
Subject
Materials Chemistry,Inorganic Chemistry,Physical and Theoretical Chemistry,Condensed Matter Physics
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