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Hydrothermal Synthesis and White Luminescence of Dy 3+ ‐Doped NaYF 4 Microcrystals
Author(s) -
Cao Chunyan,
Yang Hyun Kyoung,
Chung Jong Won,
Moon Byung Kee,
Choi Byung Chun,
Jeong Jung Hyun,
Kim Kwang Ho
Publication year - 2011
Publication title -
journal of the american ceramic society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.9
H-Index - 196
eISSN - 1551-2916
pISSN - 0002-7820
DOI - 10.1111/j.1551-2916.2011.04518.x
Subject(s) - chromaticity , luminescence , photoluminescence , coprecipitation , materials science , doping , hydrothermal circulation , hydrothermal synthesis , analytical chemistry (journal) , scanning electron microscope , powder diffraction , mineralogy , crystallography , chemistry , chemical engineering , optics , inorganic chemistry , optoelectronics , physics , chromatography , composite material , engineering
2 mol% Dy 3+ ‐doped NaYF 4 microcrystals with different morphologies and crystalline phases have been synthesized through a hydrothermal method without assistance of any surfactant, catalyst, or template by controlling reaction temperatures, reaction time, and molar ratios of reactants. For comparison, the samples were also synthesized by a direct coprecipitation method. The final products were characterized by X‐ray diffraction, field emission scanning electron microscopy, photoluminescence excitation and emission spectra, and luminescent dynamic decay curves. Dy 3+ exhibits bright white light under near ultraviolet 350 or 351 nm excitation and the white light was evaluated by chromaticity coordinates. The experimental results suggest that the obtained Dy 3+ ‐doped NaYF 4 microcrystals have potential applications in white light materials.