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In this work, Ce 3+ singly doped, Ce 3+ /Tb 3+ and Eu 3+ /K + co-doped BaSiF 6 phosphors have been synthesized via a one-step hydrothermal method. Colour-emitting may be varied by changing relative intensities of Ce 3+ and Tb 3+ through energy transfer in BaSiF 6 phosphors. We found that HF and H 3 PO 4 could facilitate the dissolution of SiO 2 under hydrothermal condition and obtained pure BaSiF 6 host material. The crystal structure and the composition were analysed, and the morphology was examined. Furthermore, the corresponding photoluminescence properties of the rare earth doped BaSiF 6 were characterized. [ABSTRACT FROM AUTHOR]

A series of BaSiF6:xEu3+ (x = 3-20%), BaSiF6:15%Eu3+/15%K+, and BaSiF6:3%Eu3+/2%Tb3+ down-conversion phosphors are hydrothermally prepared using hydrated SiO2 and NH4HF2 as metal chelating agents. [ABSTRACT FROM AUTHOR]