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Synthesis of Green-Emitting Phosphors by Bicontinuous Cubic Phase Process
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In this study, a novel approach for preparation of terbium-doped yttrium oxide phosphors
(Y2O3: Tb) by using the bicontinuous cubic phase (BCP) process was reported. EDS analysis
revealed the homogeneous precipitation occurred in the BCP structure. The experimental results
showed that the prepared precursor powder was yttrium hydroxide with a spherical shape, primary
size 30-50nm, and amorphous structure. High crystallinity phosphors with body-centered cubic
structure were obtained after heat treatment above 700oC for 4h. However, the primary size of
phosphors grew to 100-200nm and the dense agglomerates with a size below 1µm were formed
during the calcination. The photoluminescence analysis showed that the obtained Y2O3: Tb
phosphor had a strong green emitting at 544nm. The strongest emitting intensity occurred at Tb
concentration of 1mol%. This study indicated that the BCP process could be used to prepare the
highly efficient yttrium oxide-based green emitting phosphors.
Trans Tech Publications, Ltd.
Title: Synthesis of Green-Emitting Phosphors by Bicontinuous Cubic Phase Process
Description:
In this study, a novel approach for preparation of terbium-doped yttrium oxide phosphors
(Y2O3: Tb) by using the bicontinuous cubic phase (BCP) process was reported.
EDS analysis
revealed the homogeneous precipitation occurred in the BCP structure.
The experimental results
showed that the prepared precursor powder was yttrium hydroxide with a spherical shape, primary
size 30-50nm, and amorphous structure.
High crystallinity phosphors with body-centered cubic
structure were obtained after heat treatment above 700oC for 4h.
However, the primary size of
phosphors grew to 100-200nm and the dense agglomerates with a size below 1µm were formed
during the calcination.
The photoluminescence analysis showed that the obtained Y2O3: Tb
phosphor had a strong green emitting at 544nm.
The strongest emitting intensity occurred at Tb
concentration of 1mol%.
This study indicated that the BCP process could be used to prepare the
highly efficient yttrium oxide-based green emitting phosphors.
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