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Effect of sintering temperature on the luminescence properties of Ca 0.8 Ba 0.2 TiO 3 :Pr 3+ red‐emitting phosphor
Author(s) -
Mu Yannan,
Qiu Min,
Zhou Xiaoming,
Li Qian,
Sun Meiling,
Yang Haibin,
Fu Wuyou,
Yang Lihua,
Ma Jinwen
Publication year - 2015
Publication title -
luminescence
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.428
H-Index - 45
eISSN - 1522-7243
pISSN - 1522-7235
DOI - 10.1002/bio.2767
Subject(s) - luminescence , praseodymium , phosphor , sintering , photoluminescence , analytical chemistry (journal) , materials science , differential thermal analysis , barium , thermogravimetric analysis , thermal decomposition , powder diffraction , mineralogy , diffraction , crystallography , chemistry , metallurgy , physics , optoelectronics , organic chemistry , chromatography , optics
Abstract Nanoparticles with the nominal composition Ca 0.8 Ba 0.2 Ti0 3 :Pr 3+ were prepared using the sol–gel process. Barium nitrate, 4‐hydrated calcium nitrate and praseodymium oxide were used as raw materials. The structural evolution and decomposition processes of the precursors were investigated by powder X‐ray diffraction, differential thermal analysis and thermogravimetric analysis. Crystalline Ca 0.8 Ba 0.2 Ti0 3 :Pr 3+ could be obtained at 700°C. The photoluminescence properties of the samples were investigated using excitation and emission spectra. Ca 0.8 Ba 0.2 Ti0 3 :Pr 3+ nanoparticles showed strong red emission, which could be assigned to the typical 1 D 2 → 3 H 4 transition of Pr 3+ . Furthermore, the study found that sintering temperature and the introduction of Ba 2+ influence the decay time of persistent luminescence. Copyright © 2014 John Wiley & Sons, Ltd.