Yellow green luminescent glass ceramic material and preparation method thereof

A technology of luminescent glass and ceramic materials, which is applied in the field of preparation of yellow-green luminescent glass-ceramic materials and yellow-green luminescent glass-ceramic materials, which can solve the problems of reduced device life, easy aging of epoxy resin, easy drift of white light, etc.

Active Publication Date: 2013-10-02
OCEANS KING LIGHTING SCI&TECH CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the light source device produced by this method has the following defects: (1) the epoxy resin used for packaging is easy to age, and the service life of the device is reduced; (2) the process is complicated and the cost is high; (3) the color coordinates are unstable, and the white light is easy to Drift etc.
However, limited by glass preparation conditions and glass structure, many luminescent active ions in glass have very weak luminous intensity or even no luminescence.

Method used

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  • Yellow green luminescent glass ceramic material and preparation method thereof
  • Yellow green luminescent glass ceramic material and preparation method thereof

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preparation example Construction

[0019] The preparation method of the above-mentioned yellow-green luminous glass-ceramic material, such as figure 1 As shown, the preparation process is as follows:

[0020] Step S1, according to the general chemical formula aCaO-bMgO-cSiO 2 -dEu 2 o 3 The number of moles of each component in the formula, weigh the source compound of CaO, the source compound of MgO, SiO 2 raw materials, and Eu 2 o 3 source compounds, mixed and ground into a mixed powder; wherein, a, b, c, and d are mole fractions and a+b+c=100; the value ranges of a, b, c, and d are respectively: 30≤ a≤50, 10≤b≤30, 30≤c≤50, 0.1≤d≤1

[0021] Step S2, pre-calcining the mixed powder at 1100-1300° C. for 1-6 hours, then cooling to room temperature, and grinding;

[0022] Step S3, under a reducing atmosphere, place the pre-calcined mixed powder again at 1200-1300°C for reduction treatment for 2-4 hours, and then cool to room temperature;

[0023] Step S4, adding 1% to 5% (weight) clarifier Sb to the mixed p...

Embodiment 1

[0029] 30CaO-20MgO-50SiO 2 -0.1Eu 2 o 3 Weigh calcium carbonate (CaCO 3 ) 16.29g, magnesium oxide (MgO) 4.37g, silicon dioxide (SiO 2 ) 16.3g, europium trioxide (Eu 2 o 3 ) 0.18g. Grind and mix the weighed raw materials evenly in a mortar, put them into a corundum crucible, then put the covered corundum crucible with the raw materials into a high-temperature box furnace for 1 hour at 1100 degrees Celsius, and then put the calcined Put the powder raw material into a corundum mortar and grind fully and evenly; place the ground powder material in a tube furnace again, and heat it under 5% (volume ratio, the same below) H 2 and 95% (volume ratio, the same below) N 2 Calcinate the powder material at 1200°C for 2 hours under the reducing atmosphere of the mixed gas, then turn off the power supply of the tube furnace, and turn off the 5% H after the furnace cools to room temperature. 2 and 95%N 2 Mixed gas; then adding 1% by weight clarifier antimony trioxide (Sb 2 o 3 ) 0...

Embodiment 2

[0031] 50CaO-10MgO-40SiO 2 -1Eu 2 o 3 Weigh calcium carbonate (CaCO 3 ) 25.34g, magnesium oxide (MgO) 2.03g, silicon dioxide (SiO 2 ) 13.78g, europium trioxide (Eu 2 o 3) 1.78g. Grind and mix the weighed raw materials evenly in a mortar, put them into a corundum crucible, then put the covered corundum crucible with the raw materials into a high-temperature box furnace for 6 hours at 1300 degrees Celsius, and then put the calcined Put the powder material into the corundum mortar and grind it fully and evenly; put the ground powder material in the tube furnace again, and heat it under 5% H 2 and 95%N 2 Calcinate the powder material at 1300°C for 4 hours under the reducing atmosphere of the mixed gas, then turn off the power of the tube furnace, and turn off the 5% H after the furnace cools to room temperature. 2 and 95%N 2 Mixed gas; then adding 5% clarifier antimony trioxide (Sb 2 o 3 ) 1.50g and placed in a corundum mortar for sufficient and uniform grinding; the gr...

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Abstract

The invention belongs to the field of luminescent material, and discloses a yellow green luminescent glass ceramic material and a preparation method thereof. General chemical formula of the yellow green luminescent glass ceramic material is aCaO-bMgO-cSiO2-dEu2O3, in which a, b, c and d are mole fractions and a+b+c+d is equal to 100; numeric areas of a, b, c and d are respectively 30<=a<=50, 10<=b<=30, 30<=c<=50 and 0.1<=d<=1. The yellow green luminescent glass ceramic material provided by the invention has strong bandwidth excitation spectrum from ultraviolet to blue area and can emit strong yellow green light under excitation of ultraviolet or blue light.

Description

technical field [0001] The invention relates to the field of luminescent materials, in particular to a yellow-green luminescent glass ceramic material. The invention also relates to a preparation method of a yellow-green luminescent glass ceramic material. Background technique [0002] With the development of semiconductor lighting technology (LED), it is expected to be a next-generation light-emitting device that can achieve low power consumption, long life, high light efficiency and high color rendering, especially the combination of semiconductor light-emitting elements and inorganic The technical solution of combining light-emitting materials for light-emitting devices has attracted extensive attention, and a lot of research and development have been carried out for this purpose. Generally, as the primary light emitted by the light-emitting element, short-wavelength ultraviolet light to blue light is used, and then the wavelength conversion material is excited by the pr...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C03C10/14
Inventor 周明杰马文波翁方轶
Owner OCEANS KING LIGHTING SCI&TECH CO LTD
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