CN1236012C - Making process of high-luminance pink LED - Google Patents
Making process of high-luminance pink LED Download PDFInfo
- Publication number
- CN1236012C CN1236012C CN 01120644 CN01120644A CN1236012C CN 1236012 C CN1236012 C CN 1236012C CN 01120644 CN01120644 CN 01120644 CN 01120644 A CN01120644 A CN 01120644A CN 1236012 C CN1236012 C CN 1236012C
- Authority
- CN
- China
- Prior art keywords
- light
- aqueous solution
- powder
- yag
- type fluorescent
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Images
Abstract
The present invention relates to a yttrium aluminum garnet type fluorescent powder, which has a molecular formula of (Y<3-x-y>ZxEu<y>) Al5O12 or (Y3ZxEu<y>) Al5O12, wherein the x is more than 0 and is less than or equal to 0.8, the y is more than 0 and is less than or equal to 1.5, and the z is selected from a group which is composed of rare earth metal elements except Eu. The present invention also relates to a pink light emitting device with high brightness, which comprises a visible light or ultraviolet light LED and a fluorescent body, wherein the visible light or ultraviolet light LED is used as a light emitting element, and the fluorescent body contains yttrium aluminum garnet type fluorescent powder. The pink light emitting device uses the LED capable of emitting visible light or ultraviolet light with the wavelength of 370 nm to 410 nm as a light emitting element of an excitation light source to be matched with the yttrium aluminum garnet type fluorescent powder which can accept the excitation of a wave band light source to emit orange light to red light with the wavelength of 585 nm to 700 nm, and the light emitted by the LED and the light emitted by yttrium aluminum garnet type fluorescent powder are mixed to generate pink light. The present invention also relates to a preparation method of the yttrium aluminum garnet type fluorescent powder.
Description
Technical field
The present invention relates to a kind of Yttrium aluminium garnet (YAG) type fluorescent powder, it contains and is selected from europium (Eu) thulium in addition.The invention still further relates to the preparation method of this fluorescent material and the application in light-emitting device thereof, be particularly useful for providing the high-luminance pink light-emitting device.
Background technology
The fluorescent material that is usually used in pink light-emitting diode mainly is to make in crystalline compounds (claiming host lattice again) to add europium (Eu), for example: Y
3Al
5O
12: Eu
3+, Y
3O
3: Eu
3+Deng, wherein (Yttrium Alumium Garnet, YAG) luminous efficiency of type fluorescent material is preferable with the yttrium aluminum garnet structure again.Right its color, though the regulation and control that are tristimulus coordinates can present Different Results by the addition that changes europium, but wherein controllable variation tendency and scope are rather narrow, can't be at random only by the concentration of the single luminescence center of regulation and control to reach the tristimulus coordinates that other are wished to get.
In order to overcome the deficiencies in the prior art part, need develop a kind of fluorescent material of the pink light-emitting diode that can solve above-mentioned shortcoming and the modification method of preparation fluorescent material.
Summary of the invention
Technical solution of the present invention is to provide a kind of Yttrium aluminium garnet (YAG) type fluorescent powder, and its molecular formula is (Y
3-x-yZ
xEu
y) Al
5O
12Or (Y
3Z
xEu
y) A
L5O
12, 0＜x≤0.8,0＜y≤1.5 wherein, Z is selected from the group that europium (Eu) thulium is in addition formed.
Another technical solution of the present invention is to provide a kind of high-luminance pink light-emitting device, it comprises as the visible light of luminous element or ultraviolet light-emitting diodes and contains the fluor of Yttrium aluminium garnet (YAG) type fluorescent powder, wherein photodiode can send visible light or the UV-light that wavelength is 370nm to 410nm, and Yttrium aluminium garnet (YAG) type fluorescent powder accept photodiode send the band of light source excitation and send wavelength be the orange light of 585nm to 700nm to ruddiness, the light of the two produces COLOR COMPOSITION THROUGH DISTRIBUTION homogeneous powder red light after mixing.
Another technical solution of the present invention is to provide a kind of method for preparing fluorescent material of the present invention.
Description of drawings
Fig. 1 is to serve as to detect the place to record embodiment 3 tool Yttrium aluminium garnet (YAG) type fluor (Y with wavelength 600nm
2.85Ce
0.05Eu
0.1) Al
5O
12Excitation spectrum.
Fig. 2 is to be that the measured embodiment 3 of excitaton source has Yttrium aluminium garnet (YAG) type fluor (Y with wavelength 394nm
2.85Ce
0.05Eu
0.1) Al
5O
12Emmission spectrum.
Fig. 3 represents that fluor tristimulus coordinates A that the emmission spectrum with Fig. 2 calculates and the tristimulus coordinates B of wavelength 394nm are that the dotted line that end points was linked to be can be by the pink block of tristimulus coordinates figure.
This shows, the present invention relates to a kind of Yttrium aluminium garnet (YAG) type fluorescent powder, its molecular formula is (Y3-x-yZ
xEu
y)Al
5O
12Or (Y3Z
xEu
y)Al
5O
12, 0＜x≤0.8,0＜y≤1.5 wherein, Z Be selected from the group that europium (Eu) thulium in addition forms, wherein the rare earth gold beyond the europium Belong to element comprise cerium (Ce), praseodymium (Pr), neodymium (Nd), samarium (Sm), terbium (Tb), dysprosium (Dy), holmium (Ho), Erbium (Er), thulium (Tm), ytterbium (Yb) and lutetium (Lu) are preferably cerium. Because this fluorescent material contains simultaneously So (thulium beyond europium and the europium) optical activity center more than two kinds is can be by accent Control its composition or ratio, and obtain the wider pink light of Color Range, make it can represent high color The good characteristics of luminescence such as the uniformity and high brightness. Particularly, fluorescent material of the present invention is accepted wavelength When exciting for the visible light of 370nm to 410nm scope or ultraviolet light-emitting diodes, can send out Go out wavelength and be the orange light of 585nm to 700nm to ruddiness.
Fluorescent material of the present invention can use any known method for preparing fluorescent material to make. Known is glimmering Light powder method for making comprises solid state reaction and chemical synthesis. Wherein, solid state reaction is with metal Raw material mixes to scale, processes and makes glimmering through grinding, thermal decomposition, calcination, sintering and reduction The light powder. The fluorescent material uniformity that makes thus is not good, and powder granule is thicker, and inhomogeneous. Phase Over the ground, chemical synthesis rule can provide the good characteristics such as tool purity, the uniformity and particle size Fluorescent material. Therefore, just the preparation of fluorescent material of the present invention preferably makes with chemical reaction method, and is outstanding Refer to gel method and coprecipitation.
The gel method of preparation fluorescent material of the present invention, may further comprise the steps: (1) gets metallic water Soluble compound is reached even mixing according to proportional grinding of the metal group of fluorescent material, makes Metal powder mixture; (2) with the mixture of powders formation aqueous solution soluble in water, get in right amount (3) Chelating agent adds in the aqueous solution, make with the aqueous solution in metal-chelating; (4) adjust the aqueous solution The pH value is to more than or equal to 7, and makes the aqueous solution become thick shape mucus; (5) the thick shape mucus of thermal decomposition, Obtain grey shape thing; (6) calcination ash shape thing; And the product of (7) sintering after calcination.
Compound used therefor can be any suitable compound in the step (1), and it can be metallic salt Or metallo-organic compound.
Institute's water is preferably deionized water in the step (2), is preferably secondary deionized water.
Used sequestrant is to contain the organic or inorganic compound that can form inner complex with the metal selected for use in the step (3), and the available sequestrant comprises, but is not limited to organic acid, for example citric acid.The consumption of sequestrant can optionally be selected.
Can add alkali in the step (4) and make pH 〉=7 of the aqueous solution, be preferably pH more than or equal to 10.This alkali can be organic bases, mineral alkali and analogue thereof.Spendable organic bases comprises, but is not limited to amine, for example quadrol.Spendable mineral alkali comprises, but is not limited to ammoniacal liquor.
In step (4), can in the pH that adjusts solution to desirable value, use any suitable mode to promote the mucous formation of thick shape, for example with type of heating and auxiliary to stir, heating institute application temperature is preferably and is not higher than 120 ℃.
Thermolysis in the step (5) can be carried out in air, and heat decomposition temperature is on used metal species and most organic and part oxynitride pyrolysated temperature is decided, and is generally not to be higher than 400 ℃, for example 300 ℃.Carry out step (5) before, can optionally contain a cooling step in addition, so that thick shape mucus is cooled to jello.
Be sintered to known technology in calcination in the step (6) and the step (7), know the ability technician and can select suitable temperature according to used metal voluntarily, time and heat/cool rates are implemented.For example, at preparation (Y
2.85Ce
0.05Eu
0.1) Al
5O
12The time, the calcination temperature scope of being adopted can be 900 ℃ to 1200 ℃, be 1000 ℃ than the dust head, and sintering range can be 1200 ℃ to 1600 ℃, is 1500 ℃ than the dust head.Calcination and sintering can carry out in air, and heat/cool rates can be 1 ℃/minute to 10 ℃/minute, for example 5 ℃/minute.After step (6), can grind grey shape thing earlier, carry out the sintering of step (7) again through calcination.
Step (7) can optionally be carried out reduction reaction to the powder behind the sintering afterwards, and reduction reaction is to carry out with high temperature in reducing atmosphere.Reducing atmosphere can be any suitable gas or mixed gas, the mixed gas of mixed gas such as hydrogen and nitrogen, and its blending ratio can optionally be selected.For example, mixed gas can be H2/N2 (5%/95%).Those skilled in the art can optionally select for use suitable reduction temperature and recovery time to carry out reduction reaction.General reduction temperature is 1300 ℃ to 1550 ℃, is preferably 1500 ℃.The recovery time of adopting can be 6 hours to 18 hours, for example 12 hours.
The coprecipitation method of preparation fluorescent material of the present invention, may further comprise the steps: (1) gets the water-soluble cpds that contains required metal, and proportional grinding of metal group of complying with required fluorescent material reaches uniform mixing, makes metal powder mixture; (2) with the powdered mixture formation aqueous solution soluble in water, (3) adjust pH value of aqueous solution extremely more than or equal to 7, and make it form jelly; (4) thermolysis jelly obtains grey shape thing; (5) calcination ash shape thing; And the product of (6) sintering after calcination.
Compound used therefor can be any suitable compounds in the step (1), and it can be metallic salt or organometallics.
Institute's water is preferably deionized water in the step (2), is preferably secondary deionized water.
Can add alkali in the step (3) and make aqueous solution pH, preferably make pH more than or equal to 10 more than or equal to 7.Alkali can be organic bases, mineral alkali and analogue thereof.Spendable organic bases comprises, but is not limited to amine, for example quadrol.Spendable mineral alkali comprises, but is not limited to ammoniacal liquor.
In step (3), adjusting solution to required pH value, can by as mode such as stirring, with the formation of promotion jelly.Can obtain this jelly optionally by as filtering the method for (filtration of for example bleeding) in addition.
The thermolysis of step (4) can be carried out in air, and heat decomposition temperature is on used metal species and most organic and part oxynitride pyrolysated temperature is decided.Heat decomposition temperature is generally and is not higher than 400 ℃, for example 300 ℃.
Can grind grey shape thing after the step (5) earlier, carry out the sintering of step (6) again through calcination.
Be sintered to known technology in calcination in the step (5) and the step (5), know those skilled in the art and can select suitable temperature according to used metal voluntarily, time and heat/cool rates are implemented.For example, at preparation (Y
2.85Ce
0.05Eu
0.1) Al
5O
12The time, the calcination temperature scope of being adopted can be 900 ℃ to 1200 ℃, be 1000 ℃ than the dust head, and sintering range can be 1200 ℃ to 1600 ℃, is 1500 ℃ than the dust head.Calcination and sintering can carry out in air, and heat/cool rates can be 1 ℃/minute to 10 ℃/minute, for example 5 ℃/minute.
After the step (6), can optionally make the powder behind the sintering carry out reduction reaction, reduction reaction is carried out with high temperature in reducing atmosphere.Reducing atmosphere can be any suitable gas or mixed gas, the mixed gas of mixed gas such as hydrogen and nitrogen, and its blending ratio can optionally be selected.For example, mixed gas can be H
2/ N
2(5%/95%).Those skilled in the art can optionally select for use suitable reduction temperature and recovery time to carry out reductive action.General reduction temperature is 1300 ℃ to 1550 ℃, is preferably 1500 ℃; The general recovery time is 6 hours to 18 hours, is preferably 12 hours.
Metal powder mixture by set-up procedure (1) is formed, can use above-mentioned gel method and coprecipitation method to prepare any fluorescent material of wanting required for the present invention, obtained product with the made product of solid state reaction relatively, it is thinner to have a powder granule, and advantage such as even.
The invention still further relates to a kind of high-luminance pink light-emitting device, it comprises as the visible light of luminous element or ultraviolet light-emitting diodes and contains the fluor of Yttrium aluminium garnet (YAG) type fluorescent powder, Yttrium aluminium garnet (YAG) type fluorescent powder wherein, and its molecular formula is (Y
3-x-yZ
xEu
y) Al
5O
12Or (Y
3Z
xEu
y) Al
5O
12, 0＜x≤0.8,0＜y≤1.5 wherein, Z is selected from the group that at least a europium (Eu) thulium is in addition formed.Thulium beyond the europium comprises cerium (Ce), praseodymium (Pr), neodymium (Nd), samarium (Sm), terbium (Tb), dysprosium (Dy), holmium (Ho), erbium (Er), thulium (Tm), ytterbium (Yb) and lutetium (Lu).
High-luminance pink light-emitting device of the present invention be utilize can send wavelength for the visible light of 370nm to 410nm or ultraviolet light-emitting diodes as excitation light source, cooperation can be accepted this band of light source excitation and send wavelength is the Yttrium aluminium garnet (YAG) type fluorescent powder of the orange light of 585nm to 700nm to ruddiness, and the light of the two produces pink after mixing.
To add the made fluor of cerium and europium simultaneously in Yttrium aluminium garnet (YAG) type fluorescent powder is example, under the visible light or ultraviolet light-emitting diodes light source irradiation of 370nm to 410nm scope, the orange light that can send wavelength and be 585nm to 700nm is to ruddiness, these two kinds not only can present COLOR COMPOSITION THROUGH DISTRIBUTION pink uniformly after mixing, and the situation height of europium is also added in its brightness more separately.The optical characteristics of fluorescent material is to utilize photoluminescence spectrograph (Photoluminescence spectrometer) that twinkler is carried out excitation spectrum to scan the excitation wavelength when scanning emmission spectrum based on the result shown in the spectrum with decision.Of the present inventionly contain simultaneously that the prepared Yttrium aluminium garnet (YAG) type fluor in optical activation center is excited by visible light or the UV-light of 370nm to 410nm by wavelength very easily more than two kinds, the wavelength region that can send simultaneously is that the yellow orange light of 585nm to 700nm is to ruddiness.Then can experience the quite high pink light of brightness when naked eyes direct-views fluor, this principle is to be taken in the light of two kinds of different wave lengths when stimulating optic nerve simultaneously according to optics, can experience the new color that to be different from indivedual former light waves.The tristimulus coordinates of this color is so that (x, y) expression can two tristimulus coordinatess with former two light waves be on the line segment that end points was linked to be in tristimulus coordinates figure (CIE Chromaticity diagram), calculates according to the proportion of intensity relation.Adopt known technology with fluorescent material of the present invention with suitable material support or fixingly can become fluor.Cooperation can be sent the photodiode of the visible light of 370nm to 410nm or UV-light as excitation light source, imposes the pink LED that suitable electric current can obtain an excellent light-emitting property again.
Please refer to Fig. 1, it is to serve as to detect the place to record embodiment 3 and have a Yttrium aluminium garnet (YAG) type phosphor body (Y with what coprecipitation method was made with wavelength 600nm
2.85Ce
0.05Eu
0.1) Al
5O
12Excitation spectrum.Excitation wavelength when decision scans emmission spectrum based on the result shown in the spectrum is the UV-light of 394nm.Fig. 2 is for being the measured above-mentioned (Y of excitaton source with wavelength 394nm
2.85Ce
0.05Eu
0.1) Al
5O
12The fluor emmission spectrum.(Commission Internationale de l ' Eclairage, CIE) formula of the tristimulus coordinates figure that is worked out (Chromaticity diagram) was converted into the tristimulus coordinates of this fluor representative by International Commission on Illumination with 1931 with the data of emmission spectrum.With the tristimulus coordinates (0.5857,0.4020) of fluor and wavelength is that the tristimulus coordinates (0.1738,0.0049) of 394nm is respectively with A and B mark, and with the draw line of A, B point to point of dotted line.Finding that by Fig. 3 this line can be by the pink block among the tristimulus coordinates figure, promptly according to coloured light blended principle, is the light wave of the light wave of 394nm and blood orange light (A point) when stimulating when optic nerve is subjected to wavelength simultaneously, can produce peach vision.So, the fluorescent material of method gained of the present invention is mixed according to proper proportion with suitable material, cooperate again and can send suitable wavelength (this example is that 394 ± 5nm) ultraviolet light-emitting diodes is as excitation light source, after suitably encapsulating, impose the pink LED that suitable electric current can obtain an excellent light-emitting property.
Embodiment
Below list embodiment to further specify the present invention, embodiments of the invention should not be regarded as limitation of the scope of the invention.
Embodiment 1 (solid state reaction)
Get the Yttrium trinitrate [Y (NO of 2.6574 grams respectively according to stoichiometric ratio
3)
36H
2O], 4.5662 the gram aluminum nitrate [Al (NO
3)
39H
2O], 0.0529 the gram cerous nitrate [Ce (NO
3)
36H
2O] and the 0.0857 europium sesquioxide (Eu that restrains
2O
3), the prescription that makes its formation is (Y
2.85Ce
0.05Eu
0.1) Al
5O
12With the raw material that weighs with the lapping mode uniform mixing.
Mixture is inserted in the crucible, and in air, be heated to 1000 ℃ and carry out calcination (calcination) with 5 ℃/minute temperature rise rate.Rate of temperature fall with 5 ℃/minute after 24 hours is cooled to room temperature.
Grind the powder after the calcination, with place again crucible at air with 1500.C sintering (sintering) 24 hours, the temperature rate of sintering step are 5 ℃/minute.
Powder behind the grinding and sintering, can be optionally again will place H
2/ N
2In the reducing atmosphere of (5%/95%), reduce (reduction) 12 hours with 1500 ℃.
Embodiment 2 (gel method)
Get the Yttrium trinitrate [Y (NO of 2.6574 grams respectively according to stoichiometric ratio
3)
36H
2O], 4.5662 the gram aluminum nitrate [Al (NO
3)
39H
2O], 0.0529 the gram cerous nitrate [Ce (NO
3)
36H
2O] and the 0.0857 europium sesquioxide (Eu that restrains
2O
3), the prescription that makes its formation is (Y
2.85Ce
0.05Eu
0.1) Al
5O
12These metallic salts are inserted make its dissolving form the aqueous solution in the secondary deionized water.
The citric acid of getting with the dosage of mole numbers such as metal ion adds the above-mentioned aqueous solution as the Chinese blister beetle mixture.
Add alkali, for example ammoniacal liquor (Ammonia water) or quadrol etc., it is 10.5 that the aqueous solution of step 2 is adjusted to pH.
Solution with 100 ℃ of-120 ℃ of heating stepses three makes it form thick shape mucus.
With the jello of above-mentioned thick shape mucus cooling back gained in air with 300 ℃ of most organic matters of thermolysis and part oxynitride, obtain the grey shape thing of chocolate.
Grey shape thing is inserted in the crucible, and in air, be heated to 1000 ℃ and carry out calcination with 5 ℃/minute temperature rise rate.Rate of temperature fall with 5 ℃/minute after 24 hours is cooled to room temperature.
Grind the powder after the calcination, with place again crucible at air with 1500 ℃ of sintering 24 hours, the temperature rate of sintering step is 5 ℃/minute.
Powder behind the grinding and sintering optionally is placed on H again
2/ N
2Reduced 12 hours with 1500 ℃ in the reducing atmosphere of (5%/95%).
Embodiment 3 (coprecipitation method)
Yttrium trinitrate [Y (NO according to stoichiometric ratio difference 2.6574 grams
3)
36H
2O], 4.5662 the gram aluminum nitrate [Al (NO
3)
39H
2O], 0.0529 the gram cerous nitrate [Ce (NO
3)
36H
2O] and the 0.0857 europium sesquioxide (Eu that restrains
2O
3), the prescription that makes its formation is (Y
2.85Ce
0.05Eu
0.1) Al
5O
12These metallic salts are inserted make its dissolving form the aqueous solution in the secondary deionized water.
Add alkali, for example ammoniacal liquor or quadrol etc., it is 10.5 that the aqueous solution of step 1 is adjusted to pH.
Stir the colloidal solution that forms, obtain white jelly with the filtration method of bleeding then.
With the white jelly of step 3 in air with 300 ℃ of most organic matters of thermolysis and part oxynitride, obtain the grey shape thing of chocolate.
Grey shape thing is inserted in the crucible, and in air, be heated to 1000 ℃ and carry out calcination with 5 ℃/minute temperature rise rate.Rate of temperature fall with 5 ℃/minute after 24 hours is cooled to room temperature.
Grind the powder after the calcination, with place again crucible at air with 1500 ℃ of sintering 24 hours, the temperature rate of sintering step is still 5 ℃/minute.
Powder behind the grinding and sintering, optionally again will place H
2/ N
2Reduced 12 hours with 1500 ℃ in the reducing atmosphere of (5%/95%).
At last, be cooled to and take out the prepared fluor of each embodiment after the room temperature, and grind with mortar.Fluor is measured its characteristics of luminescence with the photoluminescence spectrograph.
The described embodiment of the application only illustrates specific embodiments of the invention, and the present invention is not limited thereto.Anyly be the variation implemented of purpose or modify all to be contained and cover in the claim of this case to add two kinds of (containing) above optical activity centers made fluor in the Yttrium aluminium garnet (YAG) type host lattice simultaneously, can represent the good characteristics of luminescences such as high color uniformity coefficient, high brightness.
Claims (17)
1. a Yttrium aluminium garnet (YAG) type fluorescent powder is characterized in that its molecular formula is (Y
3-x-yZ
xEu
y) Al
5O
12, 0＜x≤0.8,0＜y≤1.5 wherein, Z is cerium (Ce).
2. Yttrium aluminium garnet (YAG) type fluorescent powder according to claim 1, it is characterized in that accepting visible light that wavelength is 370nm to a 410nm scope or ultraviolet excitation by fluorescent material, can to send wavelength be that the orange light of 585nm to 700nm is to ruddiness.
3. Yttrium aluminium garnet (YAG) type fluorescent powder according to claim 1, it is used to make pink LED.
4. method for preparing Yttrium aluminium garnet (YAG) type fluorescent powder, the molecular formula that this fluorescent material has is (Y
3-x-yZ
xEu
y) Al
5O
12, 0＜x≤0.8,0＜y≤1.5 wherein, Z is cerium (Ce), it is characterized in that this method for making may further comprise the steps: (1) gets the water-soluble cpds that contains required metal, and proportional grinding of metal group of complying with required fluorescent material reaches uniform mixing, makes metal powder mixture; (2) with the powdered mixture formation aqueous solution soluble in water; (3) get an amount of sequestrant and add in the aqueous solution, make with the aqueous solution in metal-chelating; (4) adjust pH value of aqueous solution to 〉=7, and make the aqueous solution become thick shape mucus; (5) the thick shape mucus of thermolysis obtains grey shape thing; (6) calcination ash shape thing; And the product of (7) sintering after calcination.
5. method according to claim 4 is characterized in that the compound of step (1) is its metallic salt or organometallics.
6. method according to claim 4 is characterized in that step (2) institute water is a deionized water.
7. method according to claim 4 is characterized in that used sequestrant is to contain the organic or inorganic compound that can form inner complex with the metal ion of selecting for use in the step (3).
8. method according to claim 4 is characterized in that using organic bases or mineral alkali to adjust pH in step (4).
9. method according to claim 4 is characterized in that the powder after step (7) is further reduced sintering afterwards.
10. method for preparing Yttrium aluminium garnet (YAG) type fluorescent powder, the molecular formula that this fluorescent material has is (Y
3-x-yZ
xEu
y) Al
5O
12, 0＜x≤0.8,0＜y≤1.5 wherein, Z is cerium (Ce), it is characterized in that this method for making may further comprise the steps: (1) gets the water-soluble cpds that contains required metal, and proportional grinding of metal group of complying with required fluorescent material reaches uniform mixing, makes metal powder mixture; (2) with the powdered mixture formation aqueous solution soluble in water, (3) adjust pH value of aqueous solution to 〉=7, and make the aqueous solution form jelly; (4) thermolysis jelly heat obtains grey shape thing; (5) calcination ash shape thing; And the product of (6) sintering after calcination.
11. method according to claim 10, the compound that it is characterized in that step (1) is metallic salt or organometallics.
12. method according to claim 10 is characterized in that step (2) institute water is a deionized water.
13. method according to claim 10 is characterized in that being to use organic bases or mineral alkali to adjust pH in step (3).
14. method according to claim 10 is characterized in that the powder after step (6) is further reduced sintering afterwards.
15. a high-luminance pink light-emitting device, it comprises as the photodiode of the visible light of luminous element or UV-light and contains the fluor of Yttrium aluminium garnet (YAG) type fluorescent powder, it is characterized in that the molecular formula of this Yttrium aluminium garnet (YAG) type fluorescent powder is (Y
3-x-yZ
xEu
y) Al
5O
12, 0＜x≤0.8,0＜y≤1.5 wherein, Z is cerium (Ce).
16. pink light emitting device according to claim 15 is characterized in that luminous element can send visible light or the UV-light that wavelength is 370nm to a 410nm scope.
17. pink light emitting device according to claim 16 is characterized in that fluorescent material is subjected to visible light that luminous element sends or ultraviolet excitation and sends wavelength is that the orange light of 585nm to 700nm is to ruddiness.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 01120644 CN1236012C (en) | 2001-07-20 | 2001-07-20 | Making process of high-luminance pink LED |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 01120644 CN1236012C (en) | 2001-07-20 | 2001-07-20 | Making process of high-luminance pink LED |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1398948A CN1398948A (en) | 2003-02-26 |
| CN1236012C true CN1236012C (en) | 2006-01-11 |
Family
ID=4664288
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 01120644 Expired - Fee Related CN1236012C (en) | 2001-07-20 | 2001-07-20 | Making process of high-luminance pink LED |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1236012C (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100422288C (en) * | 2006-04-14 | 2008-10-01 | 厦门大学 | Process for preparing yttrium aluminum garnet |
| CN103031127B (en) * | 2011-09-30 | 2014-10-29 | 有研稀土新材料股份有限公司 | Orange fluorescent powder and preparation method thereof, and electric light source made of fluorescent powder |
| CN113314652B (en) * | 2020-02-26 | 2022-07-01 | 抱朴科技股份有限公司 | LED element and lighting device using the same |
-
2001
- 2001-07-20 CN CN 01120644 patent/CN1236012C/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| CN1398948A (en) | 2003-02-26 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| KR101080215B1 (en) | Phosphor, method for production thereof, and light-emitting apparatus | |
| KR100864124B1 (en) | White light emitting diode | |
| CN1180052C (en) | Wavelength-converting luminous material of white light for LED | |
| WO2002099902A1 (en) | Broad-spectrum terbium-containing garnet phosphors and white-light sources incorporating the same | |
| KR20060123209A (en) | Phosphor and light emission appliance using phosphor | |
| CN1927996A (en) | Fluorescent powder material, preparation method thereof and white light LED electric light source | |
| US7147803B2 (en) | Process for the preparation of pink light-emitting diode with high brightness | |
| CN1311054C (en) | Yttrium aluminium garnet (YAG) type fluorescent powder and its preparing process and application | |
| KR101115810B1 (en) | Aluminate phosphor and process for producing the same | |
| JP2007332016A (en) | Method for producing composite metal compound | |
| JP4356563B2 (en) | Oxynitride phosphor, method for producing oxynitride phosphor, and white light emitting device | |
| US20030001495A1 (en) | Pink light-emitting device | |
| US7169326B2 (en) | Fluorescent material of terbium aluminum garnet and producing methods therefor | |
| CN108517210B (en) | Ce3+, Dy3+Doped color-controllable phosphor and method of making same | |
| CN1236012C (en) | Making process of high-luminance pink LED | |
| KR100891554B1 (en) | Oxynitride-based phosphors for white leds, its preparation and white leds manufactured by using it | |
| KR100367854B1 (en) | YAG yellow phosphor comprising thulium for white LED and manufacturing method thereof | |
| CN101144015B (en) | Method for preparing fluorescent material | |
| CN1862841A (en) | LED element containing fluorescent powder, relative fluorescent powder and preparing process thereof | |
| CN1245472C (en) | Magnetic-optic crystal fluorescence powder and its production method | |
| CN110157429B (en) | Blue light excited ultra-wide spectrum fluorescent material and preparation method thereof | |
| KR20050029795A (en) | Silicate phosphor for chip of white leds, its preparation and white leds thereby | |
| Hwang et al. | Red-emitting LiEuW2O8 phosphor for white emitting diodes prepared by sol− gel process | |
| CN1233786C (en) | Prepn process of luminophor for white LED and white LED | |
| KR102113044B1 (en) | Lithium-based garnet phosphor, preparing method of the same, and luminescent property of the same |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: JINGYUAN PHOTOELECTRIC CO., LTD. Free format text: FORMER OWNER: NANDI CHEMICAL INDUSTRY CO LTD Effective date: 20080509 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20080509 Address after: Hsinchu City, Taiwan, China Patentee after: Jingyuan Optoelectronics Co., Ltd. Address before: Taiwan, China Patentee before: Nandi Chemical Industry Co., Ltd. |
|
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20060111 Termination date: 20180720 |