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White fluorescent powder of Yt-doped vanadic acid, preparation method and application thereof

A technology of phosphor powder and yttrium vanadate is applied in the field of white phosphor powder, which can solve the problem of no white phosphor powder and the like, and achieve the effects of simple and easy operation of the preparation method and cheap and easy-to-obtain raw materials.

Inactive Publication Date: 2009-03-11
SHANGHAI NORMAL UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in the existing yttrium vanadate doped materials, there has been no relevant report on the white phosphor powder doped with indium by yttrium vanadate

Method used

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  • White fluorescent powder of Yt-doped vanadic acid, preparation method and application thereof
  • White fluorescent powder of Yt-doped vanadic acid, preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] Weigh Y 2 O 3 (A.R.)4.9mmol, V 2 O 5 (A.R.)5.0mmol, In 2 O 3 (AR) 0.1mmol, after mixing, place it in an agate mortar and grind at room temperature for 20-60 minutes to make it fully mixed; then transfer it to an alumina crucible, cover it, and place the alumina crucible on the temperature-controlled horse In the furnace, the heating rate is 4°C / min, and it is burned in the air at 900°C for 2h; the furnace is naturally cooled to 20~30°C and taken out to obtain the required sample. Its composition is Y 1-x In x VO 4 , X=0.02.

Embodiment 2

[0022] Weigh Y 2 O 3 (A.R.) 4.8mmol, V 2 O 5 (A.R.)5.0mmol, In 2 O 3 (AR) 0.2mmol, after mixing, place it in an agate mortar and grind at room temperature for 20-60 minutes to make it fully mixed; then transfer it to an alumina crucible, cover it, and place the alumina crucible on the temperature-controlled horse In the furnace, the heating rate is 4℃ / min, and it is burned in the air at 800℃ for 3h; it is naturally cooled to 20~30℃ with the furnace, and then taken out, the required sample is obtained. Its composition is Y 1-x In x VO 4 , X=0.04.

Embodiment 3

[0024] Weigh Y 2 O 3 (A.R.)4.7mmol, V 2 O 5 (A.R.)5.0mmol, In 2 O 3 (AR) 0.3mmol, after mixing, place it in an agate mortar and grind at room temperature for 20-60 minutes to make it evenly mixed; then transfer it to an alumina crucible, cover it, and place the alumina crucible in a temperature-controlled horse In the furnace, according to the heating rate of 4℃ / min, burn it in the air at 1000℃ for 1h; naturally cool to 20~30℃ with the furnace, take it out, and get the required sample, its composition is Y 1-x In x VO 4 , X=0.06.

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Abstract

The invention discloses yttrium vanadate doped indium white fluorescent powder, which has a general formula of composition: Y1-xInxVO4, wherein x is the value of the molar ratio of indium as an activating agent and is more than 0 and less than or equal to 0.07. The invention adopts the prior solid-phase synthesis method, creatively adds In<3+> into YVO4 fluorescent powder to obtain the yttrium vanadate doped the indium white fluorescent powder which can emit white light; and the white fluorescent powder has strong luminous intensity and can be applied to equipment and a device which utilize photoluminescence and luminous property excitated by cathode ray of the fluorescent powder, in particular to a projection television display, an FED and a Head-up Display and other occasions which have high requirement on the luminous brightness and the luminous efficiency of the fluorescent powder and has important industrial application value. In addition, the method for preparing the white fluorescent powder is simple and easy to operate; raw materials are cheap and easy to obtain; and the white fluorescent powder is suitable for industrialized production, has no three industrial wastes basically in the reaction process and belongs to an industry with environmental protection, low energy consumption and high benefit.

Description

Technical field [0001] The invention relates to a white fluorescent powder, in particular to a white fluorescent powder doped with indium and yttrium vanadate, and a preparation method and application thereof. Background technique [0002] Yttrium Vanadate (YVO 4 ) Belongs to the tetragonal zircon crystal structure. It is an excellent matrix material that can be doped with trivalent metal and rare earth metal ions and has been used in many high-tech industries. For example, yttrium vanadate doped with europium (YVO 4 :Eu 3+ ) Is an important red luminescent material, which can be used in the red component of low-voltage three-primary energy-saving lamps or as the red luminescent component of cathode ray (CRT) in color displays; while niobium-doped yttrium vanadate (YVO 4 :Nd 3+ ) Is a laser crystal with excellent performance; yttrium vanadate doped with dysprosium (YVO 4 :Dy 3+ ) Is an important two-color ultraviolet luminescent material, which has been used in high-pressure merc...

Claims

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Application Information

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IPC IPC(8): C09K11/69C01G31/00H01J29/20
Inventor 彭子飞杜燕云王媛
Owner SHANGHAI NORMAL UNIVERSITY
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