Nd3+ sensitized blue upconversion luminescence in Nd3+/Pr3+ co-doped Ge-Ga-S-CsBr chalcohalide glasses

The effect of CsBr/Ga ratio on the blue upconverted emission from Nd3+/Pr3+ in Ge-Ga-S-CsBr chalcohalide glasses was investigated. When CsBr/Ga was smaller than unity, the energy transfer from Nd3+ to Pr3+ ions was dominant and blue emission centered at a arrow right 4495nm (Pr3+:3P0 a' 3H4) wa...

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Bibliographic Details
Published in:Journal of non-crystalline solids 2010-10, Vol.356 (44-49), p.2406-2408
Main Authors: JIHONG ZHANG, WOON JIN CHUNG, XIUJIAN ZHAO, HEO, Jong
Format: Article
Language:English
Subjects:
Condensed matter: electronic structure, electrical, magnetic, and optical properties
Emission
Energy transfer
Exact sciences and technology
Expenses
Gallium
Glass
Luminescence
Optical properties and condensed-matter spectroscopy and other interactions of matter with particles and radiation
Photoluminescence
Physics
Rare earth metals
Unity
Upconversion
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Summary:The effect of CsBr/Ga ratio on the blue upconverted emission from Nd3+/Pr3+ in Ge-Ga-S-CsBr chalcohalide glasses was investigated. When CsBr/Ga was smaller than unity, the energy transfer from Nd3+ to Pr3+ ions was dominant and blue emission centered at a arrow right 4495nm (Pr3+:3P0 a' 3H4) was observed. On the contrary, the intensity of the upconversion luminescence from Nd3+ increased at the expense of the blue emission when CsBr/Ga ratio exceeded unity. The possible relationship between the composition-dependent blue emission and the local environment of rare earth ions was discussed.
ISSN:0022-3093
1873-4812
DOI:10.1016/j.jnoncrysol.2010.04.045