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Luminescent Properties of Re2SiO4:Tm3+ (Re=Mg,Ba,Sr) Under VUV

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Abstract:

New phosphors of Tm3+ doped Re2SiO4 (Re=Mg, Ba, Sr) were prepared by the solid-state reaction and their luminescent properties were investigated. X-ray powder diffraction analysis confirmed the formation of Re2SiO4: Tm3+ (Re=Mg, Ba, Sr). The excitation spectra indicated that this phosphor can be effectively excited by 161nm. It consists of peaked at 175nm and a broad excitation band from 184nm to 300nm, corresponded to the absorption of the host lattice and the O−Tm3+ charge transfer transitions. The emission peaks at about 357nm, 459nm, 485nm is separately corresponds to the 1D2 → 3H6, 1D2 → 3H4, 1G4 → 3H6 transitions of Tm3+. As the radius of alkali earth ion in Re site increases, the main emission peaks changed to 478nm from 459nm.

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Periodical:

Key Engineering Materials (Volumes 368-372)

Pages:

372-374

DOI:

https://doi.org/10.4028/www.scientific.net/KEM.368-372.372

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Online since:

February 2008

Authors:

Peng Zhi Lu, Da Wei He, Xin Li, Yong Sheng Wang

Keywords:

Luminescence, Phosphor, Silicate

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© 2008 Trans Tech Publications Ltd. All Rights Reserved

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