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Luminescent glass ceramic doped with multiple rare earth ions and capable of up and down-conversion to ultraviolet light and preparation method thereof

A technology of glass ceramics and rare earth ions, applied in the field of rare earth doped glass ceramics and their preparation, to achieve the effect of excellent physical and chemical properties

Active Publication Date: 2015-05-06
何森
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, so far, there is no glass ceramic that can simultaneously realize the up-conversion of infrared light and visible light and the down-conversion of short-wave radiation and emit near-ultraviolet light.

Method used

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  • Luminescent glass ceramic doped with multiple rare earth ions and capable of up and down-conversion to ultraviolet light and preparation method thereof
  • Luminescent glass ceramic doped with multiple rare earth ions and capable of up and down-conversion to ultraviolet light and preparation method thereof
  • Luminescent glass ceramic doped with multiple rare earth ions and capable of up and down-conversion to ultraviolet light and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] The first step: the CaF 2 , CaCO 3 , SiO 2 、Al 2 o 3 、H 3 BO 4 , La 2 o 3 , Y 2 o 3 , CeO 2 、Eu 2 o 3 , Tb 4 o 7 、Tm 2 o 3 、Ho 2 o 3 , Yb 2 o 3 According to the molar ratio of 8:0:68:8:0:10:0:2:0.05:2:1:0.65:0.3, it is precisely weighed and mixed evenly.

[0034] Step 2: Put the mixed raw materials in a crucible and melt them in a high-temperature furnace at a melting temperature of 1550-1600°C. After the raw materials are completely melted, they are fused, homogenized, and clarified and released at 1450-1550°C. The liquid is poured on the preheated mold; then quickly put the glass into a muffle furnace at 650°C for annealing for more than 2 hours to eliminate internal stress, then slowly cool down to below 100°C, and then turn off the power of the muffle furnace After cooling down to room temperature automatically, it was taken out to obtain a transparent glass sample.

[0035] Step 3: Heat the prepared glass in a muffle furnace at 670-800°C for 0...

Embodiment 2

[0038] The first step: the CaF 2 , CaCO 3 , SiO 2 、Al 2 o 3 、H 3 BO 4 , La 2 o 3 , Y 2 o 3 , CeO 2 、Eu 2 o 3 , Tb 4 o 7 、Tm 2 o 3 、Ho 2 o 3 , Yb 2 o 3 According to the molar ratio of 15:0:62:15:0:1.5:1:3:1.5:0.00:0.75:0.1:0.15, it is precisely weighed and mixed evenly.

[0039] The second step: the melting and annealing process of the glass is basically the same as that of the first embodiment, except that the melting temperature of the glass is 1500-1600°C, and the furnace temperature is 1400-1500°C

[0040] The third step: the heat treatment process of the glass ceramics is the same as that of the first embodiment.

[0041] Results: The room temperature up-conversion emission spectra under 980nm and 640nm laser excitation conditions and the down-conversion emission spectra under 310nm laser excitation conditions were measured by fluorescence spectrometer, and the luminescence peak at 360-380nm was observed.

Embodiment 3

[0043] The first step: the CaF 2 , CaCO 3 , SiO 2 、Al 2 o 3 、H 3 BO 4 , La 2 o 3 , Y 2 o 3 , CeO 2 、Eu 2 o 3 , Tb 4 o 7 、Tm 2 o 3 、Ho 2 o 3 , Yb 2 o 3 According to the molar ratio of 25:0:41:17:14.9:0.32:0.31:0.16:0.1:0.05:0.06:0.1:1, it is precisely weighed and mixed evenly.

[0044] The second step: the melting and annealing process of the glass is basically the same as that of the first embodiment, except that the melting temperature of the glass is 1450-1550°C, and the furnace temperature is 1350-1450°C

[0045] The third step: the heat treatment process of the glass ceramics is the same as that of the first embodiment.

[0046] Results: The room temperature up-conversion emission spectra under 980nm and 640nm laser excitation conditions and the down-conversion emission spectra under 310nm laser excitation conditions were measured by fluorescence spectrometer, and the luminescence with a peak value of 350-375nm was observed.

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Abstract

The invention provides luminescent glass ceramic doped with multiple rare earth ions and capable of up and down-conversion to ultraviolet light and a preparation method thereof; the glass ceramic is fluorosilicate glass ceramic doped with at least four rare earth ions, wherein on a basis of oxide, the molar content of the rare earth ions is 1% to 20% of the total amount of the glass ceramic; the glass ceramic can realize up conversion of infrared light and visible light into ultraviolet light, and also realize down conversion of short-wave radiation into ultraviolet light.

Description

technical field [0001] The invention relates to the field of solid luminescent materials, in particular to a rare earth-doped glass ceramic capable of simultaneously realizing up-conversion and down-conversion ultraviolet luminescence and a preparation method thereof. Background technique [0002] In recent years, due to the important application prospects of ultraviolet laser in high-density optical data storage, optical display and infrared sensor, biomedicine and other fields, its acquisition method has attracted wide attention of material scientists. Converting long-wavelength laser to short-wavelength laser by up-conversion luminescent material is an effective method to obtain short-wavelength laser. Upconversion luminescence, also known as frequency upconversion luminescence, is a process in which radiative transitions are generated by multiphoton absorption, and the energy of the radiated photons is usually higher than that of the pump photons. Rare earth ion doping ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C03C10/16
Inventor 何森
Owner 何森
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