Phosphate phosphor and UV light-emitting device utilizing the same

A technology of fluorescent materials and light-emitting devices, applied in the field of fluorescent materials, can solve the problems of rare fluorescent powder and other problems

Active Publication Date: 2014-05-07
IND TECH RES INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, UV-emitting phosphors that can match xenon excimer lamps are quite rare, so there is an urgent need to develop novel phosphors to meet the above needs

Method used

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  • Phosphate phosphor and UV light-emitting device utilizing the same
  • Phosphate phosphor and UV light-emitting device utilizing the same
  • Phosphate phosphor and UV light-emitting device utilizing the same

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] Take potassium carbonate, yttrium oxide, praseodymium oxide, and diammonium hydrogen phosphate according to the chemical dosage ratio, mix them evenly, put them into a crucible, put them in a high-temperature furnace and sinter at 900°C~1100°C under air to prepare different Y / Pr molar ratios K 3 (Y 1-y PR y )(PO 4 ) 2 , where y is 0.02, 0.04, 0.06, 0.08, 0.1, 0.12, and 0.14, respectively. figure 2 K for different Y / Pr molar ratios 3 (Y 1-y PR y )(PO 4 ) 2 The emission spectrum is for emitting UV light with a wavelength between 230nm and 300nm. Such as figure 2 Shown, 8mol% of Pr 3+ Adding can get the best luminous intensity. image 3 for K 3 (Y 0.92 PR 0.08 )(PO 4 ) 2 The excitation spectrum, its excitation band is between 140 and 240nm.

[0039] Take potassium carbonate, yttrium oxide, gadolinium oxide, and diammonium hydrogen phosphate according to the chemical dosage ratio, mix them evenly, put them into a crucible, put them in a high-temperature ...

Embodiment 2

[0044] Take potassium carbonate, calcium carbonate, yttrium oxide, praseodymium oxide, and diammonium hydrogen phosphate according to the chemical dosage ratio, mix them evenly, put them into a crucible, put them in a high-temperature furnace and sinter at 950°C~1250°C under air to prepare different Y / KCa(Y 1-y PR y )(PO 4 ) 2 , where y is 0.01, 0.02, 0.05, 0.1, and 0.15, respectively. Figure 11 KCa(Y 1-y PR y )(PO 4 ) 2 The emission spectrum is for emitting UV light with a wavelength between 230nm and 330nm. Such as Figure 11 Shown, 10mol% of Pr 3+ Adding can get the best luminous intensity.

[0045] Take potassium carbonate, calcium carbonate, yttrium oxide, gadolinium oxide, and diammonium hydrogen phosphate according to the chemical dosage ratio, mix them evenly, put them into a crucible, put them in a high-temperature furnace and sinter at 950°C~1250°C under air to prepare different Y / KCa(Y 1-z Gd z )(PO 4 ) 2 , where z is 0.1, 0.2, 0.3, 0.4, and 0.5, r...

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PUM

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Abstract

Disclosed is a phosphor having a formula of M3-2xM'x(M''1-y-zPryGdz)(PO4)2. M is Li, Na, K, or combinations thereof. M' is Ca, Sr, Ba, Mg, Zn, or combinations thereof. M'' is Sc, Y, La, Lu, Al, Ga, In, or combinations thereof. 0<=x<=1, 0

Description

【Technical field】 [0001] The invention relates to a fluorescent material, more particularly to the application of this material in an ultraviolet light emitting device. 【Background technique】 [0002] Inorganic fluorescent materials (Phosphors), the excitation and luminescence characteristics are mostly determined by the composition factors such as "host materials (Host materials)", "activators / luminescent centers (Activators)" and other "dopants (Dopants)" It is determined that fluorescent materials composed of different host materials or dopants may have different luminescent properties, and "composition" naturally becomes the most important factor in regulating the photoelectric properties of fluorescent materials. Among them, most of the main materials of inorganic fluorescent materials are composed of sulfides (Suldes), oxides (Oxides), sulfur oxides (Oxysuldes) and other complex oxides (Complex oxides) such as silicates (Silicates), aluminates ( Aluminates), phosphate...

Claims

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Application Information

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IPC IPC(8): C09K11/81H01L33/50
CPCH01J1/63C09K11/7778H01J65/046
Inventor 邱奕祯叶耀宗张学明黄健豪陈登铭石刚菱龚晏莹
Owner IND TECH RES INST
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