CN109370591A - A kind of ultraviolet LED red fluorescence powder and preparation method thereof - Google Patents
A kind of ultraviolet LED red fluorescence powder and preparation method thereof Download PDFInfo
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Abstract
The present invention relates to rare earth luminescent material technical field, especially a kind of ultraviolet LED red fluorescence powder, the ultraviolet LED is indicated with red fluorescence powder by chemical general formula: Y3‑xAl2Ga3O12:xEu3+, wherein 0 < x≤1.50.The present invention also provides a kind of preparation methods of ultraviolet LED red fluorescence powder: choosing with the oxide containing Y, Al, Ga, Eu element is Y2O3, Al2O3, Ga2O3With Eu2O3By chemical general formula Y3‑xAl2Ga3O12:xEu3+Molar ratio accurately weigh raw material carry out smashing and grinding be uniformly mixed, and it puts into and is heated to 1300-1500 degrees Celsius of calcining 6-10 hours in high temperature furnace, sample is taken out after calcining and is cooled to room temperature regrinding obtains the ultraviolet LED red fluorescence powder, preparation method is simple, condition is easily-controllable, target product particle is uniform by the present invention, is worthy to be popularized.
Description
Technical field
The present invention relates to rare earth luminescent material technical field more particularly to a kind of ultraviolet LED red fluorescence powder and its systems
Preparation Method.
Background technique
The Chinese government just started " National Semiconductor illuminating engineering " plan in 2003, started deep exploration semiconductor
Lighting engineering.Thus, China's White LED Industry starts to introduce new and high technology, and tries to explore to strive for breaking through key difficulties, as early as possible
Grasp core technology.Nearly ten years, China's white light LEDs have been realized in true color and super brightness, and establish one it is complete
Whole LED industry.Currently, white light LEDs have covered each field of society, white light LEDs are closely contacted with people's lives
Together, the function of white light LEDs is not only to illuminate, or the critical elements of many industries, the figure of white light LEDs appear in electricity
Depending on having established the good developing state of white light LEDs in, fields such as mobile phone, automotive lighting, high precision instrument.
The preparation of white light LEDs is based on blue-ray LED+yellow YAG:Ce.Although this scheme have simple process, cost compared with
Low advantage；But red color light component is lacked by the white light of blue-ray LED+yellow YAG synthesis, thus its colour rendering index it is lower (Ra <
80), and colour temperature is higher [1-2].Therefore, in the technique of fluorescent powder conversion of white light LED, red fluorescence powder is to restrict white light LEDs
The key of development.During finding high efficiency red phosphor powder, Eu3+ ion is often chosen as activator ion, attached in 610nm
It is close to there is linear transmitting, therefore the feux rouges of Eu3+ emission of ions has both luminous efficiency and colour rendering [1].But Eu3+ ion transition is inhaled
Receipts are usually expressed as two kinds of forms: one is the charge transfer bands of Eu3+ to negative oxygen ion to absorb (Eu3+ → O2-), this permission
Usually in UV light region, this is misfitted transition absorption with black light or blue light wavelength；Another kind is inner electron 4f → 4f
There is linear absorption peak near ultraviolet and basket light region in transition, although sending out near ultraviolet LED chip or blue-light LED chip
Ejected wave length matches, but these transition are parity-spin-forbidden transitions, and absorption efficiency is relatively low.Therefore, it develops a kind of close purple
It is very necessary that outer light or blue region, which have the red fluorescence powder effectively absorbed, for this purpose, we have proposed a kind of ultraviolet LEDs
With red fluorescence powder and preparation method thereof.
Summary of the invention
The purpose of the present invention is to solve existing in the prior art disadvantage, and a kind of ultraviolet LED red proposed is glimmering
Light powder and preparation method thereof.
To achieve the goals above, present invention employs following technical solutions:
A kind of ultraviolet LED red fluorescence powder is designed, the ultraviolet LED is indicated with red fluorescence powder by chemical general formula: Y3- xAl2Ga3O12:xEu3+, wherein 0 < x≤1.50.
The present invention also provides a kind of preparation methods of ultraviolet LED red fluorescence powder, include the following steps:
S1, selection are Y with the oxide containing Y, Al, Ga, Eu element2O3, Al2O3, Ga2O3With Eu2O3By chemical general formula
Y3-xAl2Ga3O12:xEu3+Molar ratio accurately weighs Y2O3, Al2O3, Ga2O3With Eu2O3Raw material, wherein the variation range of x be 0 < x≤
1.50；
S2, to the Y chosen in S12O3, Al2O3, Ga2O3With Eu2O3Raw material carries out smashing and grinding and is uniformly mixed, and will mixing
Object powder is put into high temperature furnace；
S3, mixture powder among the above is heated to 1300-1500 degrees Celsius of calcining 6-10 hours, is taken after calcining
Sample and it is cooled to room temperature out；
Obtained sample regrinding is obtained into solid powdery luminescent material Y after S4, completion S33-xAl2Ga3O12:
xEu3+, that is, obtain the ultraviolet LED red fluorescence powder.
Preferably, the preparation method uses conventional solid-state method, wherein calcining is not necessarily to pre-burning, is not required to reducing atmosphere.
Preferably, the Y2O3, Al2O3, Ga2O3With Eu2O3Purity using analyze pure, Eu2O3Purity be 99.99%,
The corresponding molar ratio of each raw material is 3-x:2:3:x (0 < x≤1.5).
Preferably, the high temperature furnace uses high temperature process furnances.
A kind of ultraviolet LED red fluorescence powder proposed by the present invention and preparation method thereof, beneficial effect is: (1) material
Preparation method is simple, condition is easily-controllable, target product particle is uniform；(2) sample prepared can under near ultraviolet excitation
Launch bright feux rouges；(3)Eu3+In Y3Al2Ga3O12High-concentration dopant can be achieved in matrix, obtain high brightness red fluorescence
Powder will not generate saturated absorption under high-power LED chip excitation, so that the white light colour rendering index obtained is high, therefore ultraviolet
It is had potential application in terms of LED white emitting fluorescent powder.
Detailed description of the invention
Fig. 1 is in the present invention in Y2.95Al2Ga3O12: 0.05Eu3+, Y2.85Al2Ga3O12: 0.15Eu3+, with
Y2.70Al2Ga3O12: 0.30Eu3+, XRD diagram；
Fig. 2 is the Y prepared in air atmosphere in the present invention2.85Al2Ga3O12:0.15Eu3+The excitation of luminescent material and hair
Penetrate spectrum；
Fig. 3 is the Y prepared in air atmosphere in the present invention2.85Al2Ga3O12:0.15Eu3+The transmitting light of luminescent material
Spectrum；
Fig. 4 is the doping concentration of the luminescent material prepared in air atmosphere in the present invention and the relationship of luminous intensity.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.
A kind of ultraviolet LED red fluorescence powder, a kind of ultraviolet LED red fluorescence powder, the ultraviolet LED red fluorescence
Powder is indicated by chemical general formula: Y3-xAl2Ga3O12:xEu3+, wherein 0 < x≤1.50.
Embodiment 1
The present invention also provides a kind of preparation methods of ultraviolet LED red fluorescence powder, include the following steps:
S1, selection are Y with the oxide containing Y, Al, Ga, Eu element2O3, Al2O3, Ga2O3With Eu2O3, Y2O3、Al2O3、
Ga2O3Purity using analyze pure, Eu2O3Purity be 99.99%, by chemical formula Y2.95Al2Ga3O12:0.05Eu3+Molar ratio is
2.95:2:3:0.05 accurately weighing Y2O3, Al2O3, Ga2O3With Eu2O3Raw material；
S2, to the Y chosen in S12O3, Al2O3, Ga2O3With Eu2O3Raw material carries out smashing and grinding and is uniformly mixed, and will mixing
Object powder is put into high temperature process furnances；
S3, mixture powder among the above is heated to 1300 degrees Celsius of calcinings 6 hours, takes out sample simultaneously after calcining
It is cooled to room temperature；
Obtained sample regrinding is obtained into solid powdery luminescent material Y after S4, completion S32.95Al2Ga3O12:
0.05Eu3+, that is, obtain the ultraviolet LED red fluorescence powder.
Wherein the preparation method uses conventional solid-state method, wherein calcining is not necessarily to pre-burning, is not required to reducing atmosphere.
Embodiment 2
The present invention also provides a kind of preparation methods of ultraviolet LED red fluorescence powder, include the following steps:
S1, selection are Y with the oxide containing Y, Al, Ga, Eu element2O3, Al2O3, Ga2O3With Eu2O3, Y2O3、Al2O3、
Ga2O3Purity using analyze pure, Eu2O3Purity be 99.99%, by chemical formula Y2.90Al2Ga3O12:0.10Eu3+Molar ratio is
2.90:2:3:0.10 accurately weighing Y2O3, Al2O3, Ga2O3With Eu2O3Raw material；
S2, to the Y chosen in S12O3, Al2O3, Ga2O3With Eu2O3Raw material carries out smashing and grinding and is uniformly mixed, and will mixing
Object powder is put into high temperature process furnances；
S3, mixture powder among the above is heated to 1300 degrees Celsius of calcinings 6 hours, takes out sample simultaneously after calcining
It is cooled to room temperature；
Obtained sample regrinding is obtained into solid powdery luminescent material Y after S4, completion S32.90Al2Ga3O12:
0.10Eu3+, that is, obtain the ultraviolet LED red fluorescence powder.
Wherein the preparation method uses conventional solid-state method, wherein calcining is not necessarily to pre-burning, is not required to reducing atmosphere.
Embodiment 3
The present invention also provides a kind of preparation methods of ultraviolet LED red fluorescence powder, include the following steps:
S1, selection are Y with the oxide containing Y, Al, Ga, Eu element2O3, Al2O3, Ga2O3With Eu2O3, Y2O3、Al2O3、
Ga2O3Purity using analyze pure, Eu2O3Purity be 99.99%, by chemical formula Y2.80Al2Ga3O12:0.20Eu3+Molar ratio is
2.80:2:3:0.20 accurately weighing Y2O3, Al2O3, Ga2O3With Eu2O3Raw material；
S2, to the Y chosen in S12O3, Al2O3, Ga2O3With Eu2O3Raw material carries out smashing and grinding and is uniformly mixed, and will mixing
Object powder is put into high temperature process furnances；
S3, mixture powder among the above is heated to 1300 degrees Celsius of calcinings 6 hours, takes out sample simultaneously after calcining
It is cooled to room temperature；
Obtained sample regrinding is obtained into solid powdery luminescent material Y after S4, completion S32.80Al2Ga3O12:
0.20Eu3+, that is, obtain the ultraviolet LED red fluorescence powder.
Wherein the preparation method uses conventional solid-state method, wherein calcining is not necessarily to pre-burning, is not required to reducing atmosphere.
Embodiment 4
The present invention also provides a kind of preparation methods of ultraviolet LED red fluorescence powder, include the following steps:
S1, selection are Y with the oxide containing Y, Al, Ga, Eu element2O3, Al2O3, Ga2O3With Eu2O3, Y2O3、Al2O3、
Ga2O3Purity using analyze pure, Eu2O3Purity be 99.99%, by chemical formula Y2.70Al2Ga3O12:0.30Eu3+Molar ratio is
2.70:2:3:0.30 accurately weighing Y2O3, Al2O3, Ga2O3With Eu2O3Raw material；
S2, to the Y chosen in S12O3, Al2O3, Ga2O3With Eu2O3Raw material carries out smashing and grinding and is uniformly mixed, and will mixing
Object powder is put into high temperature process furnances；
S3, mixture powder among the above is heated to 1350 degrees Celsius of calcinings 7 hours, takes out sample simultaneously after calcining
It is cooled to room temperature；
Obtained sample regrinding is obtained into solid powdery luminescent material Y after S4, completion S32.70Al2Ga3O12:
0.30Eu3+, that is, obtain the ultraviolet LED red fluorescence powder.
Wherein the preparation method uses conventional solid-state method, wherein calcining is not necessarily to pre-burning, is not required to reducing atmosphere.
Embodiment 5
The present invention also provides a kind of preparation methods of ultraviolet LED red fluorescence powder, include the following steps:
S1, selection are Y with the oxide containing Y, Al, Ga, Eu element2O3, Al2O3, Ga2O3With Eu2O3, Y2O3、Al2O3、
Ga2O3Purity using analyze pure, Eu2O3Purity be 99.99%, by chemical formula Y2.60Al2Ga3O12:0.40Eu3+Molar ratio is
2.60:2:3:0.40 accurately weighing Y2O3, Al2O3, Ga2O3With Eu2O3Raw material；
S2, to the Y chosen in S12O3, Al2O3, Ga2O3With Eu2O3Raw material carries out smashing and grinding and is uniformly mixed, and will mixing
Object powder is put into high temperature process furnances；
S3, mixture powder among the above is heated to 1350 degrees Celsius of calcinings 7 hours, takes out sample simultaneously after calcining
It is cooled to room temperature；
Obtained sample regrinding is obtained into solid powdery luminescent material Y after S4, completion S32.60Al2Ga3O12:
0.40Eu3+, that is, obtain the ultraviolet LED red fluorescence powder.
Wherein the preparation method uses conventional solid-state method, wherein calcining is not necessarily to pre-burning, is not required to reducing atmosphere.
Embodiment 6
The present invention also provides a kind of preparation methods of ultraviolet LED red fluorescence powder, include the following steps:
S1, selection are Y with the oxide containing Y, Al, Ga, Eu element2O3, Al2O3, Ga2O3With Eu2O3, Y2O3、Al2O3、
Ga2O3Purity using analyze pure, Eu2O3Purity be 99.99%, by chemical formula Y2.50Al2Ga3O12:0.50Eu3+Molar ratio is
2.50:2:3:0.50 accurately weighing Y2O3, Al2O3, Ga2O3With Eu2O3Raw material；
S2, to the Y chosen in S12O3, Al2O3, Ga2O3With Eu2O3Raw material carries out smashing and grinding and is uniformly mixed, and will mixing
Object powder is put into high temperature process furnances；
S3, mixture powder among the above is heated to 1350 degrees Celsius of calcinings 7 hours, takes out sample simultaneously after calcining
It is cooled to room temperature；
Obtained sample regrinding is obtained into solid powdery luminescent material Y after S4, completion S32.50Al2Ga3O12:
0.50Eu3+, that is, obtain the ultraviolet LED red fluorescence powder.
Wherein the preparation method uses conventional solid-state method, wherein calcining is not necessarily to pre-burning, is not required to reducing atmosphere.
Embodiment 7
The present invention also provides a kind of preparation methods of ultraviolet LED red fluorescence powder, include the following steps:
S1, selection are Y with the oxide containing Y, Al, Ga, Eu element2O3, Al2O3, Ga2O3With Eu2O3, Y2O3、Al2O3、
Ga2O3Purity using analyze pure, Eu2O3Purity be 99.99%, by chemical formula Y2.40Al2Ga3O12:0.60Eu3+Molar ratio is
2.40:2:3:0.60 accurately weighing Y2O3, Al2O3, Ga2O3With Eu2O3Raw material；
S2, to the Y chosen in S12O3, Al2O3, Ga2O3With Eu2O3Raw material carries out smashing and grinding and is uniformly mixed, and will mixing
Object powder is put into high temperature process furnances；
S3, mixture powder among the above is heated to 1400 degrees Celsius of calcinings 8 hours, takes out sample simultaneously after calcining
It is cooled to room temperature；
Obtained sample regrinding is obtained into solid powdery luminescent material Y after S4, completion S32.40Al2Ga3O12:
0.60Eu3+, that is, obtain the ultraviolet LED red fluorescence powder.
Wherein the preparation method uses conventional solid-state method, wherein calcining is not necessarily to pre-burning, is not required to reducing atmosphere.
Embodiment 8
The present invention also provides a kind of preparation methods of ultraviolet LED red fluorescence powder, include the following steps:
S1, selection are Y with the oxide containing Y, Al, Ga, Eu element2O3, Al2O3, Ga2O3With Eu2O3, Y2O3、Al2O3、
Ga2O3Purity using analyze pure, Eu2O3Purity be 99.99%, by chemical formula Y2.30Al2Ga3O12:0.70Eu3+Molar ratio is
2.30:2:3:0.70 accurately weighing Y2O3, Al2O3, Ga2O3With Eu2O3Raw material；
S2, to the Y chosen in S12O3, Al2O3, Ga2O3With Eu2O3Raw material carries out smashing and grinding and is uniformly mixed, and will mixing
Object powder is put into high temperature process furnances；
S3, mixture powder among the above is heated to 1400 degrees Celsius of calcinings 8 hours, takes out sample simultaneously after calcining
It is cooled to room temperature；
Obtained sample regrinding is obtained into solid powdery luminescent material Y after S4, completion S32.30Al2Ga3O12:
0.70Eu3+, that is, obtain the ultraviolet LED red fluorescence powder.
Wherein the preparation method uses conventional solid-state method, wherein calcining is not necessarily to pre-burning, is not required to reducing atmosphere.
Embodiment 9
The present invention also provides a kind of preparation methods of ultraviolet LED red fluorescence powder, include the following steps:
S1, selection are Y with the oxide containing Y, Al, Ga, Eu element2O3, Al2O3, Ga2O3With Eu2O3, Y2O3、Al2O3、
Ga2O3Purity using analyze pure, Eu2O3Purity be 99.99%, by chemical formula Y2.20Al2Ga3O12:0.80Eu3+Molar ratio is
2.20:2:3:0.80 accurately weighing Y2O3, Al2O3, Ga2O3With Eu2O3Raw material；
S2, to the Y chosen in S12O3, Al2O3, Ga2O3With Eu2O3Raw material carries out smashing and grinding and is uniformly mixed, and will mixing
Object powder is put into high temperature process furnances；
S3, mixture powder among the above is heated to 1400 degrees Celsius of calcinings 8 hours, takes out sample simultaneously after calcining
It is cooled to room temperature；
Obtained sample regrinding is obtained into solid powdery luminescent material Y after S4, completion S32.20Al2Ga3O12:
0.80Eu3+, that is, obtain the ultraviolet LED red fluorescence powder.
Wherein the preparation method uses conventional solid-state method, wherein calcining is not necessarily to pre-burning, is not required to reducing atmosphere.
Embodiment 10
The present invention also provides a kind of preparation methods of ultraviolet LED red fluorescence powder, include the following steps:
S1, selection are Y with the oxide containing Y, Al, Ga, Eu element2O3, Al2O3, Ga2O3With Eu2O3, Y2O3、Al2O3、
Ga2O3Purity using analyze pure, Eu2O3Purity be 99.99%, by chemical formula Y2.10Al2Ga3O12:0.90Eu3+Molar ratio is
2.10:2:3:0.90 accurately weighing Y2O3, Al2O3, Ga2O3With Eu2O3Raw material；
S2, to the Y chosen in S12O3, Al2O3, Ga2O3With Eu2O3Raw material carries out smashing and grinding and is uniformly mixed, and will mixing
Object powder is put into high temperature process furnances；
S3, mixture powder among the above is heated to 1450 degrees Celsius of calcinings 9 hours, takes out sample simultaneously after calcining
It is cooled to room temperature；
Obtained sample regrinding is obtained into solid powdery luminescent material Y after S4, completion S32.10Al2Ga3O12:
0.90Eu3+, that is, obtain the ultraviolet LED red fluorescence powder.
Wherein the preparation method uses conventional solid-state method, wherein calcining is not necessarily to pre-burning, is not required to reducing atmosphere.
Embodiment 11
The present invention also provides a kind of preparation methods of ultraviolet LED red fluorescence powder, include the following steps:
S1, selection are Y with the oxide containing Y, Al, Ga, Eu element2O3, Al2O3, Ga2O3With Eu2O3, Y2O3、Al2O3、
Ga2O3Purity using analyze pure, Eu2O3Purity be 99.99%, by chemical formula Y2.00Al2Ga3O12:1.00Eu3+Molar ratio is
2.00:2:3:1.00 accurately weighing Y2O3, Al2O3, Ga2O3With Eu2O3Raw material；
S2, to the Y chosen in S12O3, Al2O3, Ga2O3With Eu2O3Raw material carries out smashing and grinding and is uniformly mixed, and will mixing
Object powder is put into high temperature process furnances；
S3, mixture powder among the above is heated to 1450 degrees Celsius of calcinings 9 hours, takes out sample simultaneously after calcining
It is cooled to room temperature；
Obtained sample regrinding is obtained into solid powdery luminescent material Y after S4, completion S32.00Al2Ga3O12:
1.00Eu3+, that is, obtain the ultraviolet LED red fluorescence powder.
Wherein the preparation method uses conventional solid-state method, wherein calcining is not necessarily to pre-burning, is not required to reducing atmosphere.
Embodiment 12
The present invention also provides a kind of preparation methods of ultraviolet LED red fluorescence powder, include the following steps:
S1, selection are Y with the oxide containing Y, Al, Ga, Eu element2O3, Al2O3, Ga2O3With Eu2O3, Y2O3、Al2O3、
Ga2O3Purity using analyze pure, Eu2O3Purity be 99.99%, by chemical formula Y1.90Al2Ga3O12:1.10Eu3+Molar ratio is
1.90:2:3:1.10 accurately weighing Y2O3, Al2O3, Ga2O3With Eu2O3Raw material；
S2, to the Y chosen in S12O3, Al2O3, Ga2O3With Eu2O3Raw material carries out smashing and grinding and is uniformly mixed, and will mixing
Object powder is put into high temperature process furnances；
S3, mixture powder among the above is heated to 1450 degrees Celsius of calcinings 9 hours, takes out sample simultaneously after calcining
It is cooled to room temperature；
Obtained sample regrinding is obtained into solid powdery luminescent material Y after S4, completion S31.90Al2Ga3O12:
1.10Eu3+, that is, obtain the ultraviolet LED red fluorescence powder.
Wherein the preparation method uses conventional solid-state method, wherein calcining is not necessarily to pre-burning, is not required to reducing atmosphere.
Embodiment 13
The present invention also provides a kind of preparation methods of ultraviolet LED red fluorescence powder, include the following steps:
S1, selection are Y with the oxide containing Y, Al, Ga, Eu element2O3, Al2O3, Ga2O3With Eu2O3, Y2O3、Al2O3、
Ga2O3Purity using analyze pure, Eu2O3Purity be 99.99%, by chemical formula Y1.80Al2Ga3O12:1.20Eu3+Molar ratio is
1.80:2:3:1.20 accurately weighing Y2O3, Al2O3, Ga2O3With Eu2O3Raw material；
S2, to the Y chosen in S12O3, Al2O3, Ga2O3With Eu2O3Raw material carries out smashing and grinding and is uniformly mixed, and will mixing
Object powder is put into high temperature process furnances；
S3, mixture powder among the above is heated to 1450 degrees Celsius of calcinings 9 hours, takes out sample simultaneously after calcining
It is cooled to room temperature；
Obtained sample regrinding is obtained into solid powdery luminescent material Y after S4, completion S31.80Al2Ga3O12:
1.20Eu3+, that is, obtain the ultraviolet LED red fluorescence powder.
Wherein the preparation method uses conventional solid-state method, wherein calcining is not necessarily to pre-burning, is not required to reducing atmosphere.
Embodiment 14
The present invention also provides a kind of preparation methods of ultraviolet LED red fluorescence powder, include the following steps:
S1, selection are Y with the oxide containing Y, Al, Ga, Eu element2O3, Al2O3, Ga2O3With Eu2O3, Y2O3、Al2O3、
Ga2O3Purity using analyze pure, Eu2O3Purity be 99.99%, by chemical formula Y1.70Al2Ga3O12:1.30Eu3+Molar ratio is
1.70:2:3:1.30 accurately weighing Y2O3, Al2O3, Ga2O3With Eu2O3Raw material；
S2, to the Y chosen in S12O3, Al2O3, Ga2O3With Eu2O3Raw material carries out smashing and grinding and is uniformly mixed, and will mixing
Object powder is put into high temperature process furnances；
S3, mixture powder among the above is heated to 1500 degrees Celsius of calcinings 10 hours, sample is taken out after calcining
And it is cooled to room temperature；
Obtained sample regrinding is obtained into solid powdery luminescent material Y after S4, completion S31.70Al2Ga3O12:
1.30Eu3+, that is, obtain the ultraviolet LED red fluorescence powder.
Wherein the preparation method uses conventional solid-state method, wherein calcining is not necessarily to pre-burning, is not required to reducing atmosphere.
Embodiment 15
The present invention also provides a kind of preparation methods of ultraviolet LED red fluorescence powder, include the following steps:
S1, selection are Y with the oxide containing Y, Al, Ga, Eu element2O3, Al2O3, Ga2O3With Eu2O3, Y2O3、Al2O3、
Ga2O3Purity using analyze pure, Eu2O3Purity be 99.99%, by chemical formula Y1.60Al2Ga3O12:1.40Eu3+Molar ratio is
1.60:2:3:1.40 accurately weighing Y2O3, Al2O3, Ga2O3With Eu2O3Raw material；
S2, to the Y chosen in S12O3, Al2O3, Ga2O3With Eu2O3Raw material carries out smashing and grinding and is uniformly mixed, and will mixing
Object powder is put into high temperature process furnances；
S3, mixture powder among the above is heated to 1500 degrees Celsius of calcinings 10 hours, sample is taken out after calcining
And it is cooled to room temperature；
Obtained sample regrinding is obtained into solid powdery luminescent material Y after S4, completion S31.60Al2Ga3O12:
1.40Eu3+, that is, obtain the ultraviolet LED red fluorescence powder.
Wherein the preparation method uses conventional solid-state method, wherein calcining is not necessarily to pre-burning, is not required to reducing atmosphere.
Embodiment 16
The present invention also provides a kind of preparation methods of ultraviolet LED red fluorescence powder, include the following steps:
S1, selection are Y with the oxide containing Y, Al, Ga, Eu element2O3, Al2O3, Ga2O3With Eu2O3, Y2O3、Al2O3、
Ga2O3Purity using analyze pure, Eu2O3Purity be 99.99%, by chemical formula Y1.50Al2Ga3O12:1.50Eu3+Molar ratio is
1.50:2:3:1.50 accurately weighing Y2O3, Al2O3, Ga2O3With Eu2O3Raw material；
S2, to the Y chosen in S12O3, Al2O3, Ga2O3With Eu2O3Raw material carries out smashing and grinding and is uniformly mixed, and will mixing
Object powder is put into high temperature process furnances；
S3, mixture powder among the above is heated to 1500 degrees Celsius of calcinings 10 hours, sample is taken out after calcining
And it is cooled to room temperature；
Obtained sample regrinding is obtained into solid powdery luminescent material Y after S4, completion S31.50Al2Ga3O12:
1.50Eu3+, that is, obtain the ultraviolet LED red fluorescence powder.
Wherein the preparation method uses conventional solid-state method, wherein calcining is not necessarily to pre-burning, is not required to reducing atmosphere.
The foregoing is only a preferred embodiment of the present invention, but scope of protection of the present invention is not limited thereto,
Anyone skilled in the art in the technical scope disclosed by the present invention, according to the technique and scheme of the present invention and its
Inventive concept is subject to equivalent substitution or change, should be covered by the protection scope of the present invention.
Claims (5)
1. a kind of ultraviolet LED red fluorescence powder, which is characterized in that the ultraviolet LED red fluorescence powder is by chemical general formula table
Show: Y3-xAl2Ga3O12:xEu3+, wherein 0 < x≤1.50.
2. a kind of preparation method of ultraviolet LED red fluorescence powder according to claim 1, it is characterised in that: including such as
Lower step:
S1, selection are Y with the oxide containing Y, Al, Ga, Eu element2O3, Al2O3, Ga2O3With Eu2O3By chemical general formula Y3- xAl2Ga3O12:xEu3+Molar ratio accurately weighs Y2O3, Al2O3, Ga2O3With Eu2O3Raw material, wherein the variation range of x be 0 < x≤
1.50；
S2, to the Y chosen in S12O3, Al2O3, Ga2O3With Eu2O3Raw material carries out smashing and grinding and is uniformly mixed, and by mixture powder
Material is put into high temperature furnace；
S3, mixture powder among the above is heated to 1300-1500 degrees Celsius of calcining 6-10 hours, sample is taken out after calcining
Product are simultaneously cooled to room temperature；
Obtained sample regrinding is obtained into solid powdery luminescent material Y after S4, completion S33-xAl2Ga3O12:xEu3+,
Obtain the ultraviolet LED red fluorescence powder.
3. a kind of preparation method of ultraviolet LED red fluorescence powder according to claim 2, it is characterised in that: the system
Preparation Method uses conventional solid-state method, wherein calcining is not necessarily to pre-burning, is not required to reducing atmosphere.
4. a kind of preparation method of ultraviolet LED red fluorescence powder according to claim 2, it is characterised in that: described
Y2O3、Al2O3、Ga2O3Purity using analyze pure, Eu2O3Purity be 99.99%, the corresponding molar ratio of each raw material is 3-x:2:
3:x(0<x≤1.5)。
5. a kind of preparation method of ultraviolet LED red fluorescence powder according to claim 2, it is characterised in that: the height
Warm furnace uses high temperature process furnances.
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| CN111117618B (en) * | 2019-12-12 | 2021-07-13 | 浙江大学 | Broadband near-infrared luminescent material and preparation method and application thereof |
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Application publication date: 20190222 |