Hydrothermal synthesis of Yb super(3+), Tm super(3+) co-doped Gd sub(6)MoO sub(12) and its upconversion properties

Yb super(3+), Tm super(3+) co-doped Gd sub(6)MoO sub(12) phosphors with different morphologies are prepared by the hydrothermal method. The dendrites present different morphologies (including hexagonal prisms, spindles, and spheres) after changing the pH value and edetate disodium (EDTA) usage. It i...

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Veröffentlicht in:	Chinese physics B 2015-06, Vol.24 (6), p.067801-1-067801-5
Hauptverfasser:	Di, Qiu-Mei, Sun, Yu-Mei, Xu, Qi-Guang, Han, Liu, Xue, Bing, Sun, Jia-Yue
Format:	Artikel
Sprache:	eng
Schlagworte:	Dendritic structure Emission Luminescence Morphology Phosphors Prisms Semiconductor lasers Upconversion
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creator	Di, Qiu-Mei Sun, Yu-Mei Xu, Qi-Guang Han, Liu Xue, Bing Sun, Jia-Yue
description	Yb super(3+), Tm super(3+) co-doped Gd sub(6)MoO sub(12) phosphors with different morphologies are prepared by the hydrothermal method. The dendrites present different morphologies (including hexagonal prisms, spindles, and spheres) after changing the pH value and edetate disodium (EDTA) usage. It is found that each of the two factors plays a crucial role in forming different morphologies. The up-conversion (UC) luminescence is studied. Under 980-nm semiconductor laser excitation, relatively strong blue emission and weak red emission are observed. Finally, the effect of pumping power on the UC luminescence properties and the level diagram mechanism of Gd sub(6)MoO sub(12):Yb super(3+)/Tm super(3+) phosphor are also discussed.
doi_str_mv	10.1088/1674-1056/24/6/067801
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subjects	Dendritic structure Emission Luminescence Morphology Phosphors Prisms Semiconductor lasers Upconversion
title	Hydrothermal synthesis of Yb super(3+), Tm super(3+) co-doped Gd sub(6)MoO sub(12) and its upconversion properties
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