Publication Date:
2014-10-14
Description:
Eu 3+ -doped transparent phosphate precursor glasses and glass-ceramics containing TbPO 4 nanocrystals were successfully fabricated by a conventional high-temperature melt-quenching technique for the first time. The formation of TbPO 4 nanocrystals was identified through X-ray diffraction, transmission electron microscopy, high-resolution transmission electron microscopy, selected-area electron diffraction, and photoluminescence emission spectra. The obvious Stark splitting of 5 D 0 - 7 F J ( J = 1, 2, 4) transitions of Eu 3+ and the increase of internal quantum efficiency indicate the incorporation of Eu 3+ into TbPO 4 nanocrystals. Energy transfer from Tb 3+ ions to Eu 3+ ions was investigated using excitation and emission spectra at room temperature. The glass-ceramics obtained have more efficient Tb 3+ to Eu 3+ energy transfer than the glass, and so serve as good hosts for luminescent materials.
Print ISSN:
0002-7820
Electronic ISSN:
1551-2916
Topics:
Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
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