Photoluminescence Properties of Novel Host-Sensitized Y^sub 6^WO^sub 12^:Dy^sup 3+^ Phosphors

Novel host-sensitized ... phosphors were synthesized via solid-state reaction process. X-ray diffraction analysis confirmed the phase formation of ... materials. The photoluminescence excitation and emission spectra, concentration effect, thermal-quenching, and decay properties were investigated. Th...

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Bibliographic Details
Published in:Journal of the American Ceramic Society 2014-07, Vol.97 (7), p.2170
Main Authors: Yu, Ruijin, Shin, Dong Soo, Jang, Kiwan, Guo, Yue, Noh, Hyeon Mi, Moon, Byung Kee, Choi, Byung Chun, Jeong, Jung Hyun, Yi, Soung Soo
Format: Article
Language:English
Subjects:
Ceramics
Diffraction
Ions
Luminescence quenching
Phase transitions
Solid solutions
Online Access:Get full text
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Summary:Novel host-sensitized ... phosphors were synthesized via solid-state reaction process. X-ray diffraction analysis confirmed the phase formation of ... materials. The photoluminescence excitation and emission spectra, concentration effect, thermal-quenching, and decay properties were investigated. The phosphor could be excited by the UV light region from 300 to 400 nm, and it exhibited blue (478 nm) and yellow (568 nm) emission corresponding to ... transitions and ... transitions, respectively. The WO... groups in the host lattices can absorb UV light efficiently, and then transferred the energy to the activator ... ions, resulting in near white light emission. The optimum dopant concentration of ... ions in ... was around 5 mol% and the critical transfer distance of ... was calculated as 12 A. The fluorescence lifetime was also determined in ... The temperature dependence of photoluminescence properties was investigated from 300 to 480 K and the prepared ... phosphors showed poor thermal-quenching properties. (ProQuest: ... denotes formulae/symbols omitted.)
ISSN:0002-7820
1551-2916