Submicron Tm3+:beta-Li2TiO3 high purity blue light phosphor and preparation method

Abstract

The invention provides a preparation method of submicron Tm3+:beta-Li2TiO3 high purity blue light phosphor, and the method comprises the following steps: dissolving Li2O particles in distilled water; preparing a LiOH solution whose mole concentration is 0.10-3.00 mol / L; adding Ti source and Tm source into the solution; performing mixing uniformly; carrying out a hydrothermal reaction for 1-20 hours at 100-240 DEG C in a baking oven; performing cooling in a furnace, fetching out hydrothermal products; drying the hydrothermal products; performing grinding uniformly; performing calcining for 6-36 hours at 500-700 DEG C. in an electric resistance furnace; cooling in furnace and grinding; and obtaining the high purity blue light phosphor.

Description

【Technical field】

[0001] The invention belongs to the technical field of preparing submicron powder by wet chemical method, in particular to a submicron Tm 3+ :β-Li 2 TiO 3 A preparation method of high-purity blue light phosphor. 【Background technique】

[0002] At present, rare earth luminescent materials have become the core materials in the fields of information display, lighting source, and optoelectronic devices. Among them, the most widely used is the phosphor material that can be excited by ultraviolet-near ultraviolet (200-450nm) to produce different luminescent colors. The high luminous intensity, high color purity and uniform particle size distribution of phosphor powder can significantly improve the performance of optoelectronic devices. Blue light phosphor is one of the most important components of three primary color phosphors. Since the advent of gallium nitride-based blue light phosphors, the research on blue light phosphors has become a hot spot in the LED...

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