Preparation method for Mn:YAG fluorescent powder, and Mn:YAG laminated fluorescent glass as well as preparation method and application of glass

A fluorescent glass and fluorescent powder technology, applied in the field of LED fluorescent materials, can solve the problems of shortened service life, easy to be corroded by air, unstable phosphor powder, etc., and achieve longer service life, avoid the influence of light effect, and stable and uniform interlayer Effect

Active Publication Date: 2018-04-20
WENZHOU UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the LEDs made by this method have low display index and high color temperature.
Moreover, the phosphor is unstable, easily corroded by air, and seriously aged, which greatly shortens the service life

Method used

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  • Preparation method for Mn:YAG fluorescent powder, and Mn:YAG laminated fluorescent glass as well as preparation method and application of glass
  • Preparation method for Mn:YAG fluorescent powder, and Mn:YAG laminated fluorescent glass as well as preparation method and application of glass
  • Preparation method for Mn:YAG fluorescent powder, and Mn:YAG laminated fluorescent glass as well as preparation method and application of glass

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0055] Such as figure 1As shown in the figure, the Mn: YAG phosphor ink is printed on a φ55 glass plate 1 with a thickness of 0.5 mm through a 100-mesh screen, and it is placed in a muffle furnace, and it takes 6 hours to rise from room temperature to 200°C and keep warm for 2 hours. Then close the muffle furnace, cool to room temperature, and cover the glass 3 on the glass substrate on the side with the Mn:YAG phosphor. Put it into a high-temperature furnace, raise it to 700°C for 1.5 hours, keep it warm for 3 minutes, close the high-temperature furnace, cool to room temperature, and then obtain a piece of Mn:YAG fluorescent laminated glass. Wherein, the glass plate of φ55 is borosilicate glass.

[0056] The Mn:YAG phosphor is composed of: Y 2 o 3 : 55 parts, Al 2 o 3 : 45 parts, MnCO 3 : 1 copy, HBO 3 : 2 parts, BeO 1 part and Er 2 o 3 0.5 parts are accurately weighed, then put into an agate mortar, mixed and ground evenly, the ground raw materials are sintered at...

Embodiment 2

[0073] In this embodiment, be that among the embodiment 1, use 6 hours to rise from room temperature to 200 ℃, and keep warm for 2 hours. Then close the muffle furnace, cool to room temperature, and cover the glass 3 on the glass substrate on the side with the Mn:YAG phosphor. Put it into a high-temperature furnace, raise it to 700°C in 1.5 hours, keep it warm for 3 minutes, change it to take 8 hours to rise from room temperature to 300°C, and keep it at 300°C for 1 hour, then cool to room temperature, close the muffle furnace, and automatically cool down After reaching room temperature, place the glass plate sample in a high-temperature furnace to raise the temperature from room temperature to 600°C for 1 hour, and keep the temperature at 600°C for 3 minutes, then close the high-temperature furnace, and then cool down to room temperature with the furnace to obtain Mn:YAG fluorescent glass. The rest are the same as in Embodiment 1, and will not be repeated.

[0074] The prepa...

Embodiment 3

[0076] In this embodiment, the Mn:YAG phosphor laminated glass obtained in the above example and the Ce:YAG glass-ceramics are combined on a blue light chip to form a light source structure. The packaging process of the light source is simple, and the life of the light source is longer.

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Abstract

The invention provides a preparation method for Mn:YAG fluorescent powder, and Mn:YAG laminated fluorescent glass as well as a preparation method and application of the glass. The prepared Mn:YAG fluorescent powder and an ink are mixed, the mixed material is brushed on a glass substrate, and another glass substrate covers the first glass substrate to form a sandwich-like structure. Through temperature raising, the glass substrates are softened and tightly bonded together, the glass substrates are adjusted according to a practical application, and the thickness is generally maintained at 0.5mm-3mm; and the mixture of the Mn:YAG fluorescent powder and the ink is also adjusted according to a practical application, and the range of the thickness is 30-300[mu]m. The Mn:YAG laminated fluorescentglass provided by the invention has the advantages of high luminous efficiency and good thermal stability, and can effectively prevent the fluorescent layer from being corroded by the surrounding environment.

Description

technical field [0001] The invention belongs to the technical field of LED fluorescent materials, and specifically relates to a preparation method of Mn:YAG fluorescent powder, Mn:YAG laminated fluorescent glass, a preparation method and application thereof. Background technique [0002] As a new type of solid-state lighting source, Light Emitting Diode (Light Emitting Diode) light source has the advantages of environmental protection, high luminous efficiency, long life, and small size. At present, the mainstream LED is white light obtained by exciting phosphor powder with a blue light chip. The white light obtained in this way has good luminous efficiency, and it is expected that the luminous efficiency of LEDs will reach 200lm·W by 2020. -1 . Blue light excitation of yellow phosphor Ce:YAG to obtain white light is already the most convenient, most commonly used and most commercial method. However, the LEDs made by this method have low CRI and high color temperature. M...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K11/80C03C17/23C03B23/203H01L33/50
CPCC03B23/203C03C17/23C03C2217/23C09K11/778H01L33/502H01L33/505
Inventor 向卫东周磊梁晓娟
Owner WENZHOU UNIVERSITY
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