CN1039240C - Green powder, blue powder of aluminosilicate and its three primary colour fluorescent powder series - Google Patents
Green powder, blue powder of aluminosilicate and its three primary colour fluorescent powder series Download PDFInfo
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- CN1039240C CN1039240C CN93110525A CN93110525A CN1039240C CN 1039240 C CN1039240 C CN 1039240C CN 93110525 A CN93110525 A CN 93110525A CN 93110525 A CN93110525 A CN 93110525A CN 1039240 C CN1039240 C CN 1039240C
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- powder
- aluminate
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- green
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Abstract
The present invention relates to fluorescent powder used in an energy-saving lamp. The present invention is made by the method that more than one gram molecular weight of silicon dioxide is respectively added into aluminate green powder and aluminate blue powder to respectively obtain aluminosilicate green powder and aluminosilicate blue powder; yttrium oxide europium red powder, the aluminosilicate green powder and the aluminosilicate blue powder are mixed to obtain an aluminosilicate tricolor fluorescent powder system. The fluorescent powder system has small light attenuation, high lumen maintenance and stable structure.
Description
The present invention relates to fluorescent material used in a kind of electricity-saving lamp, particularly fluorescence green powder, blue powder and three primary colors fluorescent powder system.
At present, used green powder, blue powder and three primary colors fluorescent powder system thereof mainly is aluminate green powder (chemical name is many magnesium aluminates cerium terbium), blue powder (chemical name is many barium magnesium aluminates) and aluminate three primary colors fluorescent powder system in the domestic electricity-saving lamp, the light decay of blue powder of aluminate and green powder is big, especially in the three-color fluorescent lamp of high colour temperature, light decay is main to derive from blue powder, so good blue powder is current quite noticeable problem to study sustainment rate.For improving its performance, the external method that adopts is a spot of silicon-dioxide that mixes, so that improve the lux maintenance of electricity-saving lamp.As blue powder, Japanese Patent 87-00,578; 89-275,690 and European patent " Eur.Pat.Appl.Ep " 241,848 etc., reported the silicon-dioxide that in the blue powder of aluminate, adds the 0.001-0.5 mole number.For green powder, Japanese Patent has 77-22, and 836; 82-52,390; 82-61,068; 87-227,487; 89-217,096; 90-173,08; 90-300,286 etc., they propose to add the mole number of silicon-dioxide from 1 * 10 in the aluminate green powder
-5-0.5.The add-on of above-mentioned silicon-dioxide all belongs to hotchpotch at 1 below the mole number, can not change the main composition of its compound, still can not reach satisfied effect.
Purpose of the present invention is exactly in order to address the above problem, and a kind of higher-dimension holdup is provided, the green powder of silico-aluminate, blue powder and the three primary colors fluorescent powder system thereof of low light decay.
Technical solution of the present invention:
The green powder of a kind of silico-aluminate is characterized in that in the green powder process of synthesizing aluminate adding the silicon-dioxide (SiO of 1-4 mole
2), becoming trivalent cerium and trivalent terbium activated silicoaluminate magnesium cerium terbium green emitting phosphor, its general formula is:
(CeTb)MgSinAlmO
(4n+3m+5)/2
Wherein: n=1-4 (n＜m)
m＝5-9
The blue powder of a kind of silico-aluminate is characterized in that adding the silicon-dioxide (SiO of 1-5 mole in the blue powder process of synthesizing aluminate
2), becoming the blue look fluorescent material of divalent europium activated silicoaluminate barium magnesium, its general formula is:
(BaEu)Mg
2Si
aAl
bO
(4a+3b+6)/2
Wherein: a=1-5 (a＜b)
b＝6-14
A kind of silico-aluminate three primary colors fluorescent powder system is characterized in that it is by yttrium europium oxide (Y
2O
3: Eu) rouge and powder, the green powder of silico-aluminate [(CeTb) MgSinAlmO
(4n+3m+5)/2] and blue powder [(BaEu) Mg of silico-aluminate
2Si
aAl
bO
(4a+3b+6)/2] mix and form.
The present invention adds the silicon-dioxide more than 1 mole in aluminate fluorescent powder, the temperature of the silicate compound that forms is more much lower than the temperature that forms aluminate, add silicon-dioxide and reduced sintering temperature, play the effect of fusing assistant, and the add-on of silicon-dioxide has become the important component part in the fluorescent material component, make compound structure more stable, thereby light decay is reduced, have good lux maintenance.
Embodiment 1.
The green powder of silico-aluminate: take by weighing cerium dioxide (CeO by mole number
2, purity is 99.9%), terbium sesquioxide (Tb
4O
7, purity is 99.99%), analytical pure magnesium oxide (MgO), high-purity silicon dioxide (SiO
2), fluorescence level aluminium sesquioxide (Al
2O
3) and a little boric acid (H
3BO
3), the mole number of its each component is:
CeO
20.65 mole
Tb
4O
70.35/4 mole
1 mole of MgO
SiO
22 moles
Al
2O
37/2 mole
H
3BO
30.1 mole
After they were mixed, under 1450-1560 ℃ of temperature calcination 2-3 hour, cooling was pulverized, and reduction 3-4 hour under 1350-1400 ℃ of gac protection more promptly gets silico-aluminate green emitting phosphor [(CeTb) MgSi after pulverizing, sieving
2Al
7O
17], it sends the green fluorescence that the main peak value is 545nm under the 253.7nm uviolizing, and its relative brightness is than not adding SiO
2The relative brightness of green powder high by 3%, and have good lux maintenance.
Embodiment 2.
The blue powder of silico-aluminate;
Take by weighing fluorescence grade barium carbonate (BaCO by mole number
3), analytical pure barium fluoride (BaF
2), analytical pure magnesium oxide (MgO), europium sesquioxide (Eu
2O
3, purity is 99.99%), high-purity silicon dioxide (SiO
2), fluorescence level aluminium sesquioxide (Al
2O
3) and a little boric acid (H
3BO
3), the mole number of its each component is;
BaCO
30.65 mole
BaF
20.2 mole
2 moles of MgO
Eu
2O
30.15/2 mole
SiO
22 moles
Al
2O
312/2 mole
H
3BO
30.1 mole
With them still through mixing, high temperature sintering, pulverizing, high temperature reduction, pulverize and operation such as sieve promptly get silico-aluminate orchid powder [(BaEu) Mg
2Si
2Al
12O
25], it sends the blue look fluorescence that peak wavelength is 456nm under the 253.7nm uviolizing, and the relative brightness of this blue powder is than not adding SiO
2Fluorescent material high by 2%, and this blue powder through the system lantern test, light decay is less than 5%.
Embodiment 3:
Silico-aluminate three primary colors fluorescent powder system:
With yttrium europium oxide (Y
2O
3: the green powder of silico-aluminate [(CeTb) MgSi that Eu) obtains among rouge and powder and the embodiment 1
2Al
7O
17] and blue powder [(BaEu) Mg of the silico-aluminate that obtains of embodiment 2
2Si
2Al
12O
25] mix and just to obtain silico-aluminate three primary colors fluorescent powder system, according to the Different Weight per-cent of their three kinds of components, can mix the three primary colors fluorescent powder system of the various colour temperatures of forming 2700K to 6400K, their weight percent is:
Yttrium europium oxide rouge and powder 30-65%
The green powder 35-50% of silico-aluminate
The blue powder 1-25% of silico-aluminate
This system has the advantages that light decay is little, light efficiency is high.
Claims (3)
1, the green powder of a kind of silico-aluminate is characterized in that in the green powder process of synthesizing aluminate adding the silicon-dioxide (SiO of 1-4 mole
2), becoming trivalent cerium and trivalent terbium activated silicoaluminate magnesium cerium terbium green emitting phosphor, its general formula is:
(CeTb)MgSinAlmO
(4n+3m+5)/2
Wherein: n=1-4 (n＜m)
m＝5-9
2, the blue powder of a kind of silico-aluminate is characterized in that adding the silicon-dioxide (SiO of 1-5 mole in the blue powder process of synthesizing aluminate
2), becoming the blue look fluorescent material of divalent europium activated silicoaluminate barium magnesium, its general formula is:
(BaEu)Mg
2Si
aAl
bO
(4a+3b+6)/2
Wherein: a=1-5 (a＜b)
b＝6-14
3, a kind of silico-aluminate three primary colors fluorescent powder system is characterized in that it is by yttrium europium oxide (Y
2O
3: Eu) rouge and powder, the green powder of silico-aluminate [(CeTb) MgSinAlmO
(4n+3m+5)/2] and blue powder [(BaEu) Mg of silico-aluminate
2SiaAl
bO
(4a+3b+6)/2] mix and form.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN93110525A CN1039240C (en) | 1993-01-11 | 1993-01-11 | Green powder, blue powder of aluminosilicate and its three primary colour fluorescent powder series |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN93110525A CN1039240C (en) | 1993-01-11 | 1993-01-11 | Green powder, blue powder of aluminosilicate and its three primary colour fluorescent powder series |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1118802A CN1118802A (en) | 1996-03-20 |
| CN1039240C true CN1039240C (en) | 1998-07-22 |
Family
ID=4988382
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN93110525A Expired - Fee Related CN1039240C (en) | 1993-01-11 | 1993-01-11 | Green powder, blue powder of aluminosilicate and its three primary colour fluorescent powder series |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1039240C (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101701153B (en) * | 2009-11-17 | 2012-08-22 | 江门市科恒实业股份有限公司 | Method for preparing aluminate green phosphor with low content of terbium |
| CN102969431A (en) * | 2012-11-09 | 2013-03-13 | 南京吉山光电科技有限公司 | Lens with light-emitting diode (LED) fluorescent powder remotely arranged |
| CN103881705B (en) * | 2014-03-26 | 2016-01-20 | 吉林大学 | Cerium, terbium or europium silico-aluminate blue-green fluorescent powder mixing activation altogether and preparation method thereof |
| CN106811800B (en) * | 2015-11-28 | 2019-06-04 | 中国科学院新疆理化技术研究所 | Lithium aluminosilicate nonlinear optical crystal and its preparation method and application |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS62277487A (en) * | 1986-05-27 | 1987-12-02 | Toshiba Corp | Aluminate fluorescent substance |
| JPS63154785A (en) * | 1986-12-18 | 1988-06-28 | Toshiba Corp | Phosphor |
-
1993
- 1993-01-11 CN CN93110525A patent/CN1039240C/en not_active Expired - Fee Related
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS62277487A (en) * | 1986-05-27 | 1987-12-02 | Toshiba Corp | Aluminate fluorescent substance |
| JPS63154785A (en) * | 1986-12-18 | 1988-06-28 | Toshiba Corp | Phosphor |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1118802A (en) | 1996-03-20 |
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