Rare earth-doped oxyfluoride germanate microcrystalline glass and preparation method thereof

Abstract

The invention discloses rare earth-doped oxyfluoride germanate microcrystalline glass and a preparation method thereof, and belongs to the technical field of luminescent materials. The microcrystalline glass comprises the following components in percentage by mole: 39-55% of GeO2, 5-15% of ZnO, 5-15% of AlF3, 10-25% of BaF2, 1-10% of Na2O, 1-20% of NaF and 0.5-5% of RF2 (R is rare earth elements). The preparation method comprises the following steps: firstly preparing oxyfluoride germanate glass by using a melt quenching method; and then, carrying out micro-crystallization on matrix glass by virtue of a thermal treatment process to obtain transparent oxyfluoride germanate microcrystalline glass, wherein the prepared oxyfluoride germanate microcrystalline glass has good transmission of light in a range from near-infrared rays to visible light, and the up-conversion luminescence of rare earth ions is remarkably enhanced. The prepared rare earth-doped oxyfluoride germanate microcrystalline glass containing NaBaAlF6 nano-crystals is simple in preparation method, high in environmental-friendly safety and relatively low in production cost.

Description

technical field

[0001] The invention relates to a rare earth-doped oxygermanate fluoride glass-ceramic and a preparation method thereof, in particular to a rare-earth-doped fluoride-containing nanocrystal glass-ceramic up-conversion luminescent material and a preparation method thereof, belonging to the luminescent material technology field. Background technique

[0002] Rare earth-doped frequency conversion luminescence technology has great potential application value in the fields of solid-state laser, data storage, general lighting, three-dimensional display, microscopic imaging, sensing technology, solar cells, anti-counterfeiting technology and military confrontation. Therefore, domestic and foreign Rare earth doped luminescent materials have been extensively studied.

[0003] The research results show that after heat treatment of rare earth-doped matrix glass, after the crystal phase appears inside the glass, rare earth ions will be preferentially enriched in the prec...

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