Synthesis and Control of the Morphology of YBO3:Eu Phosphor by Hydrothermal Method

Abstract

Abstract: YBO₃:Eu³⁺phosphor with different morphologies was successfully prepared by hydrothermal process below 300℃, which is lower about 800℃ than the temperature by solid state method. The reaction conditions, such as starting materials, pH value, reaction temperature, reaction media, catalyst, etc, were investigated. The optimum reaction conditions for preparing spherical vaterite type YBO₃:Eu³⁺ phosphor with uniform size was obtained. Under 254 nm excitation, the main emission peak appeared at 598 nm for spherical shape Y_0.95Eu_0.05BO₃ phosphor synthesized by hydrothermal process and the photoluminescence intensity(⁵D₀→⁷F₁ transition) of it was higher by 50% than that prepared by solid-state reaction. These results indicate that hydrothermal process has a promising application to preparing phosphors for lamps and displays.

Key words: Hydrothermal process, YBO₃:Eu³⁺, Control of morphology, Phosphor

CLC Number:

O614

TrendMD:

HE Ling, WANG Yu-Hua, . Synthesis and Control of the Morphology of YBO₃:Eu Phosphor by Hydrothermal Method[J]. Chem. J. Chinese Universities, 2004, 25(9): 1585.

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Synthesis and Control of the Morphology of YBO₃:Eu Phosphor by Hydrothermal Method

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