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Design, synthesis and luminescence properties of Ba 2 YB 2 O 6 Cl‐ and Ba 2 YB 2 O 6 F‐based phosphors
Author(s) -
Chen Wanping,
Yang Xin,
Liu Yan,
Dai Xiaoyan
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.2716
Subject(s) - phosphor , photoluminescence , luminescence , analytical chemistry (journal) , materials science , doping , spectroscopy , excitation , chemistry , optoelectronics , physics , chromatography , quantum mechanics
Using a high‐temperature solid‐state reaction, the chlorine in Ba 2 YB 2 O 6 Cl is gradually replaced by F, and a new compound with the nominal chemical formula Ba 2 YB 2 O 6 F and two phosphors doped with Ce 3+ and Eu 3+ , respectively, are obtained. X‐Ray diffraction and photoluminescence spectroscopy are used to characterize the as‐synthesized samples. The as‐synthesized Ba 2 YB 2 O 6 Cl exhibits bright blue emission in the spectral range ~ 330–410 nm with a maximum around 363 nm under X‐ray or UV excitation. Ba 2 YB 2 O 6 F:0.01Ce 3+ exhibits blue emission in the range ~ 340–570 nm with a maximum around 383 nm. Ba 2 YB 2 O 6 F:0.01Eu 3+ exhibits a predominantly 5 D 0 – 7 F 2 emission (~610 nm) and the relative intensities of the 5 D 0 – 7 F 0,1,2 emissions are tunable under different wavelength UV excitation. The luminescence behaviors of the two phosphors are explained simply in terms of the host composition and site occupancy probability of Ce 3+ and Eu 3+ , respectively. The results indicate that these phosphors have potential application as a blue phosphor or as a red phosphor. Copyright © 2014 John Wiley & Sons, Ltd.