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Method for improving luminescent property of SrAl2B2O7:Tb<3+> green fluorescent powder

A green phosphor, sral2b2o7 technology, applied in the field of materials science, can solve the problem of low luminous intensity of green phosphor, and achieve the effect of stable chemical properties of samples, increased number, and improved fluorescence performance

Inactive Publication Date: 2016-07-27
SHANGHAI INST OF TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] Aiming at the above-mentioned technical problems in the prior art, the present invention provides a kind of improved SrAl 2 B 2 o 7 :Tb 3+ The method for the luminescent properties of green phosphor powder, the described method for improving SrAl 2 B 2 o 7 :Tb 3+ The method for the luminous performance of green phosphor powder should solve the problem of SrAl in the prior art 2 B 2 o 7 :Tb 3+ Technical Problems of Low Luminous Intensity of Green Phosphor Powder

Method used

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  • Method for improving luminescent property of SrAl2B2O7:Tb&lt;3+&gt; green fluorescent powder
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  • Method for improving luminescent property of SrAl2B2O7:Tb&lt;3+&gt; green fluorescent powder

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Embodiment 1

[0019] A kind of improving SrAl 2 B 2 o 7 :Tb 3+ A method for the luminescent properties of green phosphors using strontium boroaluminate (SrAl 2 B 2 o 7 ) as the luminescent material matrix, using trivalent terbium ion Tb 3+ As a luminescent activator, doped with an appropriate amount of K + improve its fluorescence properties.

[0020] One of the above improved SrAl 2 B 2 o 7 :Tb 3+ The method for the luminous performance of green fluorescent powder specifically comprises the following steps:

[0021] 1) Weigh SrCO according to mole percentage 3 , Al 2o 3 , H 3 BO 3 , Tb 2 o 3 and K 2 CO 3 Raw material, in the raw material, SrCO 3 The molar percentage is 24.069%; Al 2 o 3 The molar percentage of H is 24.435; H 3 BO 3 The molar percentage is 51.313%; Tb 2 o 3 The molar percentage is 0.122%; K 2 CO 3 The molar percentage is 0.061%;

[0022] 2) Grinding the above-mentioned raw materials in a mortar, mixing the powder evenly, and passing through a 2...

Embodiment 2

[0030] A kind of improving SrAl 2 B 2 o 7 :Tb 3+ A method for the luminescent properties of green phosphors using strontium boroaluminate (SrAl 2 B 2 o 7 ) as the luminescent material matrix, using trivalent terbium ion Tb 3+ As a luminescent activator, doped with an appropriate amount of K + improve its fluorescence properties.

[0031] One of the above improved SrAl 2 B 2 o 7 :Tb 3+ The method for the luminous performance of green fluorescent powder specifically comprises the following steps:

[0032] 1) Weigh SrCO according to mole percentage 3 , Al 2 o 3 , H 3 BO 3 , Tb 2 o 3 and K 2 CO 3 Raw material, in the raw material, SrCO 3 The molar percentage is 23.961%; Al 2 o 3 The molar percentage is 24.450%; H 3 BO 3 The molar percentage is 51.345%; Tb 2 o 3 The molar percentage is 0.122%; K 2 CO 3 The molar percentage is 0.122%;

[0033] 2) Grinding the above-mentioned raw materials in a mortar, mixing the powder evenly, and passing through a 200-...

Embodiment 3

[0039] A kind of improving SrAl 2 B 2 o 7 :Tb 3+ A method for the luminescent properties of green phosphors using strontium boroaluminate (SrAl 2 B 2 o 7 ) as the luminescent material matrix, using trivalent terbium ion Tb 3+ As a luminescent activator, doped with an appropriate amount of K + improve its fluorescence properties.

[0040] One of the above improved SrAl 2 B 2 o 7 :Tb 3+ The method for the luminous performance of green fluorescent powder specifically comprises the following steps:

[0041] 1) Weigh SrCO according to mole percentage 3 , Al 2 o 3 , H 3 BO 3 , Tb 2 o 3 and K 2 CO 3 Raw material, in the raw material, SrCO 3 The molar percentage is 23.745%; Al 2 o 3 The molar percentage is 24.480%; H 3 BO3 The molar percentage is 51.408%; Tb 2 o 3 The molar percentage is 0.245%; K 2 CO 3 The molar percentage is 0.122%;

[0042] 2) Grinding the above-mentioned raw materials in a mortar, mixing the powder evenly, and passing through a 200-me...

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Abstract

The invention discloses a method for improving the luminescent property of SrAl2B2O7:Tb<3+> green fluorescent powder. SrAl2B2O7 is used as a luminescent material matrix, Tb<3+> is used as a luminescent activator, and Tb2O3 is used as a substance source of Tb<3+>; K2CO3 is used as a K<+> source, lattice positions are substituted by K<+> with a high-temperature solid-phase synthesis method, a calcination temperature ranges from 950 DEG C to 1,000 DEG C, a calcination atmosphere adopts an air atmosphere, and luminous-enhanced terbium stimulates SrAl2B2O7 green fluorescent powder. Crystals are doped with an alkali metal element K<+> for charge compensation, and sensitization is realized, so that the number of Tb<3+> luminescence centers is increased quickly, the luminescent intensity of a sample is enhanced, and the fluorescence property is improved.

Description

technical field [0001] The invention belongs to the field of material science, and relates to a luminescent material, in particular to a method for improving SrAl 2 B 2 o 7 :Tb 3+ Methods for the luminescent properties of green phosphors. Background technique [0002] Rare earth elements are widely used in the composition of luminescent material matrix, activators, co-activators, and sensitizers. The advantages of rare earth luminescent materials are strong absorption capacity, high conversion efficiency, strong emission capacity in the visible light region, and stable physical and chemical properties. Nowadays, the continuous development and innovation of high technology such as flat panel display, new generation light source, optoelectronic device and optical fiber communication make it a hot spot of research and development. Rare earth activated boroaluminate luminescent material is a low synthesis temperature, thermally stable A new type of high-efficiency luminesce...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K11/63
CPCC09K11/7755
Inventor 常程康李心驭伍凤云郭芸芸石明明
Owner SHANGHAI INST OF TECH
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