Effects of Various Fluxes on Synthesis of Deep Red Emitting CaAl12O19:Mn4+ Phosphors

Deep red emitting CaAl12-xO19:xMn4+ phosphors were synthesized by solid state reaction method. Various fluxes (BaF2, H3BO3, Na2CO3 and NH4Cl) were added in preparation of the phosphors. The influences of the various fluxes on the crystal structure, morphology and luminescent properties of CaAl12O19:...

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Bibliographic Details
Published inMaterials science forum Vol. 852; pp. 454 - 460
Main Authors Xiao, Fang Ming, Ni, Hai Yong, Zhang, Qiu Hong, Wang, Ling Li
Format Journal Article
LanguageEnglish
Published Pfaffikon Trans Tech Publications Ltd 01.04.2016
Subjects
Applied physics
Chemistry
Light emitting diodes
Materials research
Materials science
Morphology
Optical properties
Flux
CaAl12O19:Mn4
Iuminescent Properties
Phosphor
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ISSN0255-5476
1662-9752
1662-9752
DOI10.4028/www.scientific.net/MSF.852.454

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Summary:Deep red emitting CaAl12-xO19:xMn4+ phosphors were synthesized by solid state reaction method. Various fluxes (BaF2, H3BO3, Na2CO3 and NH4Cl) were added in preparation of the phosphors. The influences of the various fluxes on the crystal structure, morphology and luminescent properties of CaAl12O19:Mn4+ phosphors were studied. The results show that the obtained phosphors with fluxes possessed better luminescent intensity than that of the phosphors without fluxes. The maximum luminescent intensities were found with the following order: H3BO3 (2.0 wt%) > Na2CO3 (0.5 wt%) > NH4Cl (0.3 wt%) > BaF2 (0.1 wt%) > no flux. The H3BO3 flux can decrease the single phase forming temperature of CaAl12O19:Mn4+ phosphors by about 150°C.
Bibliography:Selected, peer reviewed papers from the China Functional Material Technology and Industry Forum CFMTIF 2015, October 30th - Novemnber 1th, 2015
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ISSN:0255-5476
1662-9752
1662-9752
DOI:10.4028/www.scientific.net/MSF.852.454