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A platform for research: civil engineering, architecture and urbanism
A novel synthetic route to Y2O3:Tb3+ phosphors by bicontinuous cubic phase process
AbstractThis study applies a novel approach to prepare the terbium-doped yttrium oxide phosphors (Y2O3:Tb3+) using the bicontinuous cubic phase (BCP) process. The experimental results show that the prepared precursor powder was amorphous yttrium hydroxide Y1−xTbx(OH)3 with a spherical shape and primary size 30–50nm. High crystallinity phosphors with body-centered cubic structures were obtained after heat treatment above 700°C for 4h. The primary size of the phosphors grew to 100–200nm, and dense agglomerates with a size below 1μm were formed during the calcination. The obtained Y2O3:Tb3+ phosphor had a strong green emitting at 542nm. The optimum Tb3+ concentration was 1mol% to obtain the highest PL intensity. This study indicates that the calcining temperature of 700°C needed for high luminescence efficiency in this work is much lower than 1000°C or above needed for the conventional solid-state method.
A novel synthetic route to Y2O3:Tb3+ phosphors by bicontinuous cubic phase process
AbstractThis study applies a novel approach to prepare the terbium-doped yttrium oxide phosphors (Y2O3:Tb3+) using the bicontinuous cubic phase (BCP) process. The experimental results show that the prepared precursor powder was amorphous yttrium hydroxide Y1−xTbx(OH)3 with a spherical shape and primary size 30–50nm. High crystallinity phosphors with body-centered cubic structures were obtained after heat treatment above 700°C for 4h. The primary size of the phosphors grew to 100–200nm, and dense agglomerates with a size below 1μm were formed during the calcination. The obtained Y2O3:Tb3+ phosphor had a strong green emitting at 542nm. The optimum Tb3+ concentration was 1mol% to obtain the highest PL intensity. This study indicates that the calcining temperature of 700°C needed for high luminescence efficiency in this work is much lower than 1000°C or above needed for the conventional solid-state method.
A novel synthetic route to Y2O3:Tb3+ phosphors by bicontinuous cubic phase process
Chien, Wen-Chen (author) / Yu, Yang-Yen (author) / Yang, Chun-Chen (author)
2009-01-25
5 pages
Article (Journal)
Electronic Resource
English
A novel synthetic route to Y2O3:Tb3+ phosphors by bicontinuous cubic phase process
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