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Synthesis of Red‐Emitting AgGd 0.9 Eu 0.1 ( MoO 4 ) 2 Phosphors by Precipitation at Room Temperature
Author(s) -
Song Jie,
Du Yanrong,
Xu Ling,
Wei Hengwei,
He Diping,
Jiao Huan
Publication year - 2014
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/jace.12776
Subject(s) - photoluminescence , crystallinity , tetragonal crystal system , phosphor , materials science , transmission electron microscopy , luminescence , scanning electron microscope , analytical chemistry (journal) , precipitation , spectroscopy , particle size , chemical engineering , crystallography , nanotechnology , chemistry , crystal structure , optoelectronics , composite material , physics , chromatography , meteorology , quantum mechanics , engineering
A series of Eu 3+ ‐doped AgGd ( MoO 4 ) 2 red phosphors with well‐defined shape and size were prepared via a precipitation method at room temperature. The samples were characterized by X‐ray powder diffraction ( XRD ), scanning electron microscopy ( SEM ), transmission electron microscopy ( TEM ), and photoluminescence ( PL ) spectroscopy. The crystallinity, particle size, morphology, and luminescent properties of the as‐prepared products were tuned by controlling the reaction conditions such as the precipitation reagents used and the pH of the initial solution. XRD results showed that all of the synthesized samples adopted a pure tetragonal structure. The formation mechanism of AgGdMo 2 O 8 was investigated in detail, and two intermediates were found to be essential. Photoluminescence properties of the as‐prepared AgGd 0.9 Eu 0.1 ( MoO 4 ) 2 phosphors under diverse experimental conditions were also studied systematically, and their emission spectra showed emission characteristic of Eu 3+ .