CN101864310A - Blue or green fluorescent material for field emission - Google Patents
Blue or green fluorescent material for field emission Download PDFInfo
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- CN101864310A CN101864310A CN201010187444A CN201010187444A CN101864310A CN 101864310 A CN101864310 A CN 101864310A CN 201010187444 A CN201010187444 A CN 201010187444A CN 201010187444 A CN201010187444 A CN 201010187444A CN 101864310 A CN101864310 A CN 101864310A
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- Prior art keywords
- fluorescent material
- blue
- field emission
- less
- green fluorescent
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Abstract
The invention relates to a blue or green fluorescent material for field emission, which is characterized by being expressed by the following general formula: xN.yLn.zG.qSiO2, wherein N is one or two selected from SrCO3, BaCO3, SrSO4 or Sr(OH)2, Ln is one or two selected from CeO2, Ce2(CO3)3, Eu2O3, MnCO3, Tm2O3 or Tb4O7, G is Ga2O3 or/and In2O3, x is no less than 0.6 and no more than 1.0, y is no less than 0.001 and no more than 0.4, z is no less than 0.8 and no more than 1.2, and q is no less than 1.8 and no more than 2.5. In the invention, in a gallium and indium oxide host material, blue or green high-efficiency fluorescent material excited by a low-voltage cathode ray can be obtained by doping the different active ions and can be used as a fluorescent material for potential FED (Field Emission Display).
Description
Technical field
The present invention relates to a kind of fluorescent material, particularly a kind of is emission (FED) flat pannel display fluorescent material.
Background technology
Field-causing electron emission FED (field emission display, FED) be called cold electron emission again, its principle of work is to add a highfield at cathode surface, use the most advanced and sophisticated ejected electron of electric field self-emission negative electrode (cathode emitter) material to bombard fluorescent material on the screen, activated phosphor and luminous.FED plane technique of display combines the light, thin of the limpid in sight and liquid-crystal display of CRT cathode tube, has advantages such as high brightness, high response speed, visual angle broadness, becomes focus of flat pannel display research field in recent years.
CN200910022660.9 disclose a kind of FED with this method of manufacture method of blue luminescent phosphor according to following steps: (1) preparation 1000ppm concentration silver powder; (2) fluorescent material batching; (3) fluorescent material charging sintering; (4) fluorescent material pre-treatment; (5) top coat is handled; (6) preparation blue luminescent phosphor: fluorescent material powder after will handling slurry anhydrates, drying, sieve, and obtains blue luminescent phosphor.This invention is by adopting Ag
+For activator, with ZnS is substrate material.JP2009001698 discloses a kind of red fluorescence material, and active ions are Al, Mn, matrix formula M
IIM
2S
4, M wherein
IIBe Mg, Ca, Sr, Ba one or more, M is Ga, In one or both.JP2009001699 discloses a kind of red fluorescence powder, with ZnGa
2S
4Being substrate material, is active ions with the mn ion, at the stronger ruddiness of low-tension current excitation-emission.CN200710055667.1 discloses a kind of colored phosphor powder in use for field emission and preparation method thereof, and its chemical expression is: La
(1-x)GaO
3: xA
3+, 0＜x≤0.1 wherein; A is two kinds of a kind of or Sm among Tm, Sm, the Tb and Tb, and the mol ratio of Sm: Tb is 0.3～3.Selected substrate material has certain electric conductivity and is the oxide-base material.CN200810107283.4 discloses a kind of emission, vacuum fluorescence shows with blue colour fluorescent powder and preparation method thereof, and an emission, vacuum fluorescence show that its chemical expression is: La with blue colour fluorescent powder and preparation method thereof
2 (1-x)O
3: 2xA
3+, 0＜x≤0.1 wherein; A is a kind of among Tm, the Tb.Selected substrate material is the oxide-base material, under identical shooting conditions, and prepared blue emission fluorescent powder for field emission La
2O
3: Tm
3+, La
2O
3: Tb
3+Emissive porwer and purity of color surpass the commercial FED blue powder of using.
From above open source literature as seen, FED is mainly sulfide matrix and gallium, Indium matrix of oxide with fluorescent material.Advantages such as negative electrode poisons because sulphide fluorescent material in the low-voltage, high-current working conditions, occurs easily, electric current is saturated easily.And gallium, Indium metallicity conductor oxidate matrix have excellent conducting performance, have higher photoluminescence efficiency under the low-voltage, high-current cathode-ray exciting, stable and anti-ageing ability.
Summary of the invention
The invention provides a kind of exciting and present blueness or green fluorescent material down at low-tension current.
Fluorescent material of the present invention is expressed as with general formula: xN.yLn.zG.qSiO
2Wherein N is SrCO
3, BaCO
3, SrSO
4Or Sr (OH)
2In one or both, Ln is CeO
2, Ce
2(CO
3)
3, Eu
2O
3, MnCO
3, Tm
2O
3Or Tb
4O
7In one or both; G is Ga
2O
3Or/and In
2O
30.6≤x≤1,0.001≤y≤0.4,0.8≤z≤1.2,1.8≤q≤2.5.
Rare earth ion Eu
2+, Tb
3+, Ce
3+, Tm
3+With transition metal ion Mn
2+Has excellent luminescent properties, wherein Eu
2+, Ce
3+Belong to the f-d transition, it is bigger to be subjected to the influence of matrix composition, can launch UV-light～red light.And rare earth Tb
3+And Tm
3+Belong to the f-f transition, it is less to be subjected to the influence of matrix composition, transmitting green light and blue light.As the FED fluorescent material, generally need excellent conductive performance, avoided like this causing luminous efficiency to descend at big electric current excitated fluorescent powder surface charge accumulation.The present invention selects Ga for use
2O
3, In
2O
3This based semiconductor material utilizes the excellent luminescent properties of rare earth ion as substrate material, the blue or green FED fluorescent material that synthetic luminescent properties is superior, and wherein embodiment 3 is with respect to ZnS:Cu
+, Al
3+95% of brightness, and embodiment 1 is with respect to ZnS:Ag
+87.6% of brightness.
Therefore, the present invention by the different active ions that mix, obtains highly efficient fluorescent material blue, that green low-voltage cathode ray excites in same substrate material, can be used as a kind of potential FED demonstration fluorescent material.
Description of drawings
Fig. 1 embodiment 1 is at voltage 2kV, the emmission spectrum figure under electric current 50 μ A excite;
Fig. 2 embodiment 2 is at voltage 2kV, the emmission spectrum figure under electric current 50 μ A excite;
Fig. 3 embodiment 1 is under voltage 2kV, along with electric current changes luminous intensity figure;
Fig. 4 embodiment 3 is under 50 μ A electric currents, along with the luminous intensity figure of voltage change.
Embodiment
With purity is analytically pure SrCO
3, BaCO
3, SrSO
4, Sr (OH)
2, CeO
2, Ce
2(CO
3)
3, Eu
2O
3, MnCO
3, Tm
2O
3, Tb
4O
7, Ga
2O
3, In
2O
3And SiO
2, press table 1 mixed, batch mixing is 40 hours in encloses container, then with mixture at H
2Under %＜5% atmosphere, insulation is 10 hours in 1300～1450 ℃ of reduction furnaces, and cooling, broken classification obtain blueness and green luminescent material.
Electroluminescent test condition: vacuum tightness 10
-4Pa, fluorescent material is excited by the electric current of 1～5kV voltage, 10～140 μ A, and electroluminescent spectrum obtains 100～1100nm emmission spectrum, probe temperature: room temperature by Ocean Optics QEB0388 fiber spectrometer record.
Relative brightness R%=I
Embodiment launches integrated intensity/ I
Commercial blue powder or green powder emission integrated intensity* 100%
Wherein definition: commercial blue powder ZnS:Ag
+Emissive porwer 100%
Commercial green powder ZnS:Cu
+Al
3+Emissive porwer 100%
The composition of table 1 embodiment and content and emission main peak thereof
Claims (3)
1. use for field emission blueness or green fluorescent material is characterized in that being expressed as with general formula: xN.yLn.zG.qSiO
2Wherein N is SrCO
3, BaCO
3, SrSO
4Or Sr (OH)
2In one or both, Ln is CeO
2, Ce
2(CO
3)
3, Eu
2O
3, MnCO
3, Tm
2O
3Or Tb
4O
7In one or both; G is Ga
2O
3Or/and In
2O
30.6≤x≤1,0.001≤y≤0.4,0.8≤z≤1.2,1.8≤q≤2.5.
2. blueness according to claim 1 or green fluorescent material is characterized in that forming and content is 0.8 BaCO
3, 0.1 SrCO
3, 0.05 Eu
2O
3, 0.8 Ga
2O
3, 0.2 In
2O
3With 2.2 SiO
2
3. blueness according to claim 1 or green fluorescent material is characterized in that forming and content is 0.8 SrCO
3, 0.05 Tb
4O
7, 1.0 In
2O
3With 2.1 SiO
2
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010187444A CN101864310A (en) | 2010-05-24 | 2010-05-24 | Blue or green fluorescent material for field emission |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010187444A CN101864310A (en) | 2010-05-24 | 2010-05-24 | Blue or green fluorescent material for field emission |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101864310A true CN101864310A (en) | 2010-10-20 |
Family
ID=42956240
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201010187444A Pending CN101864310A (en) | 2010-05-24 | 2010-05-24 | Blue or green fluorescent material for field emission |
Country Status (1)
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|---|---|
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113061362A (en) * | 2021-04-07 | 2021-07-02 | 昆明理工大学 | Preparation method of stress luminescent coating of high-sensitivity mechanical stimulus response sphere |
-
2010
- 2010-05-24 CN CN201010187444A patent/CN101864310A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113061362A (en) * | 2021-04-07 | 2021-07-02 | 昆明理工大学 | Preparation method of stress luminescent coating of high-sensitivity mechanical stimulus response sphere |
| CN113061362B (en) * | 2021-04-07 | 2021-12-14 | 昆明理工大学 | Preparation method of stress luminescent coating of high-sensitivity mechanical stimulus response sphere |
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|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
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| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
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Application publication date: 20101020 |