CN107903896A - A kind of green emitting phosphor and preparation method thereof - Google Patents
A kind of green emitting phosphor and preparation method thereof Download PDFInfo
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- CN107903896A CN107903896A CN201711113735.5A CN201711113735A CN107903896A CN 107903896 A CN107903896 A CN 107903896A CN 201711113735 A CN201711113735 A CN 201711113735A CN 107903896 A CN107903896 A CN 107903896A
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- C09K11/00—Luminescent, e.g. electroluminescent, chemiluminescent materials
- C09K11/08—Luminescent, e.g. electroluminescent, chemiluminescent materials containing inorganic luminescent materials
- C09K11/77—Luminescent, e.g. electroluminescent, chemiluminescent materials containing inorganic luminescent materials containing rare earth metals
- C09K11/7766—Luminescent, e.g. electroluminescent, chemiluminescent materials containing inorganic luminescent materials containing rare earth metals containing two or more rare earth metals
- C09K11/7767—Chalcogenides
- C09K11/7768—Chalcogenides with alkaline earth metals
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Abstract
The present invention provides a kind of green emitting phosphor and preparation method thereof.The chemical composition of the fluorescent powder is SrR2‑xCexSc2O7；Wherein, 0 ＜ x ＜ 2；R is the one or more in La, Y and Lu, and wherein Y is necessary.It is an advantage of the invention that fluorescent powder of the present invention has brand-new chemical composition, with Ce3+For activator, which can be stimulated by blue light and launch green light, so that blue light can be converted into green light by the fluorescent powder.
Description
Technical field
The invention belongs to luminescent material technical field, more particularly to a kind of green emitting phosphor and preparation method thereof.
Background technology
Realize that white light is mainly the following mode by LED conversions：
1）Multi-chip LED.RGB three-primary color LEDs chip packages is produced into white light together.Combined and formed using RGB three-color LEDs
The technology of white light LEDs is most efficient, avoids energy loss caused by Stokes shift in light-emitting phosphor transfer process,
Highest luminous efficiency can be obtained, while the light intensity of 3 kinds of different photochromic LED can be separately controlled, realizes the effect of Full-color color-changing.
But white light LEDs made of this method is each photochromic inconsistent with driving current and temperature change, with the rate of decay of time
Differ, and its heat dissipation problem, also than more prominent, production cost remains high.
2）Three primary colors fluorescent powder conversion LED.Three primary colors fluorescent powder conversion LED can on the premise of higher photoluminescence efficiency,
The colour rendering of LED is effectively lifted, it has higher luminous efficacy and colour rendering index.Three primary colours white light LEDs are realized common
Method is to excite one group of yellow, green, blue (RGB) three primary colours fluorescence that can be effectively excited by ultraviolet light using ultraviolet light (UV) LED
Powder, its feature are produced by fluorescence point completely for the visible light part of spectrum.But, it has the following disadvantages：Electric light transformation efficiency
It is relatively low；Powder mixing is more difficult, there is efficient fluorescent powder yet-to-be developed；Encapsulating material easy aging, longevity under ultraviolet light
Life is shorter, and there are the hidden danger of ultraviolet leakage；Highly efficient power type UVLED is not easy to prepare.
3）Yellow fluorescent powder converts LED.Blue light GaN chips+doping Ce at present3+, Yellow light-emitting low temperature yttrium-aluminium-garnet
(Y3Al5O12:Ce3+, YAG) and fluorescent powder is most common two primary colours fluorescent powder conversion LED.As currently commercially most ripe, most
White light LED technology easy to implement, it has the advantages that energy consumption is small, small, light-weight, compact-sized and causes people's
Extensive concern.In the apparatus, the blue light that GaN is sent excites YAG and obtains sodium yellow, unabsorbed blue light and yellow light
It is compound to obtain white light, therefore be a kind of glimmering of current usage amount maximum in the YAG fluorescent powder of blue light or purple light excited lower Yellow light-emitting low temperature
Light powder.But due to lack red-light spectrum and green spectrum in the spectrum of yellow fluorescent powder conversion LED, so such LED's is aobvious
Color is poor, and the color that object is presented under the irradiation of such light source is presented with object under natural light (sunlight) irradiation
Color has certain deviation.
Certainly (orange) red and green emitting phosphor are suitably added in yellow fluorescent powder, yellow fluorescence can be significantly improved
Powder converts the display of white light LEDs.
For the fluorescent powder of green light, at present, just like SrSi2O2N2:Eu2+Fluorescent powders such as (non-patent literatures 1) for
Selection.But SrSi2O2N2:Eu2+As a kind of nitric oxide fluorescent powder, relative difficulty is synthesized.
At present, SrY2Sc2O7Commonly used in doing dielectric ceramic or sensor material, it is yet there are no in luminescent material side
The application in face.By in SrY2Sc2O7In suitably adulterate some elements so that become it is a kind of can green light fluorescent powder,
It is that applicant has found first.
The content of the invention
An object of the present invention is to provide a kind of green emitting phosphor.
It is another object of the present invention to be to provide a kind of preparation method of green emitting phosphor.
The present invention is based on a kind of a series of the researchs as a result, thus successfully providing green fluorescence of above-mentioned cognition progress
Powder.That is, shown in the chemical general formula of the fluorescent powder such as formula (I)：
SrR2-xCexSc2O7(I)；
Wherein, 0 ＜ x ＜ 2；R is the one or more in La, Y and Lu, and wherein Y is necessary.
Preferably, the x is 0.02 ~ 0.12.
Present invention also offers a kind of preparation method of green emitting phosphor, including：
A) Sr presomas, R presomas, Ce presomas are mixed with Sc presomas, high temperature solid state reaction is carried out, obtains chemical general formula
Fluorescent powder as shown in formula (I)；
SrR2-xCexSc2O7(I)；
The molar ratio of Sr, R, Ce and Sc are 1 in the Sr presomas, R presomas, Ce presomas and Sc presomas：(2-x)：x：
2；0 ＜ x ＜ 2；The R is the one or more in La, Y and Lu, and wherein Y is necessary.
Preferably, the Sr presomas, R presomas, Ce presomas and the purity of Sc presomas are not less than 99.5%.
Preferably, the step A) be specially：
Sr presomas, R presomas, Ce presomas are mixed with Sc presomas, after tabletting, carry out high temperature burning in a reducing atmosphere
Knot, obtains fluorescent powder.
Preferably, the Sr presomas are in the nitrate of the carbonate of Sr, the oxide of Sr, the oxalates of Sr and Sr
It is one or more；
The R presomas are the one or more in the nitrate of the carbonate of R, the oxide of R, the oxalates of R and R；
The Ce presomas are the one or more in the nitrate of the carbonate of Ce, the oxide of Ce, the oxalates of Ce and Ce；
The Sc presomas are the one or more in the nitrate of the carbonate of Sc, the oxide of Sc, the oxalates of Sc and Sc.
Preferably, the reducing atmosphere is ammonia or nitrogen hydrogen mixeding gas.
Preferably, the temperature of the high temperature sintering is 1000 DEG C ~ 1400 DEG C；The time of the high temperature sintering is 2 ~ 12 h.
The present invention provides a kind of green emitting phosphor and preparation method thereof.The chemical composition of the fluorescent powder is SrR2- xCexSc2O7；Wherein, 0 ＜ x ＜ 2；R is the one or more in La, Y and Lu, and wherein Y is necessary.It is an advantage of the invention that
Fluorescent powder of the present invention has brand-new chemical composition, with Ce3+For activator, which can launch green light under blue light excitation,
So that blue light can be converted into green light by the fluorescent powder, so that applied to yellow fluorescent powder conversion white light LEDs, and improve its colour developing
Property.
Brief description of the drawings
Fig. 1 is the exciting light spectrogram of the fluorescent powder obtained in the embodiment of the present invention 1；
Fig. 2 is the launching light spectrogram of the fluorescent powder obtained in the embodiment of the present invention 1；
Fig. 3 is the exciting light spectrogram of the fluorescent powder obtained in the embodiment of the present invention 2；
Fig. 4 is the launching light spectrogram of the fluorescent powder obtained in the embodiment of the present invention 2；
Fig. 5 is the exciting light spectrogram of the fluorescent powder obtained in the embodiment of the present invention 3；
Fig. 6 is the launching light spectrogram of the fluorescent powder obtained in the embodiment of the present invention 3；
Fig. 7 is the exciting light spectrogram of the fluorescent powder obtained in the embodiment of the present invention 4；
Fig. 8 is the launching light spectrogram of the fluorescent powder obtained in the embodiment of the present invention 4.
Embodiment
Below in conjunction with the embodiment of the present invention, the technical solution in the embodiment of the present invention is clearly and completely described,
Obviously, described embodiment is only part of the embodiment of the present invention, instead of all the embodiments.Based in the present invention
Embodiment, those of ordinary skill in the art's all other embodiments obtained without making creative work, all
Belong to the scope of protection of the invention.
The present invention provides a kind of orange red fluorescent powder, the chemical general formula such as formula (I) of the fluorescent powder is shown：
SrR2-xCexSc2O7(I)；
Wherein, 0 ＜ x ＜ 2, are preferably 0.02 ~ 0.12, and more preferably 0.02 ~ 0.06, in some embodiments provided by the invention
In, the x is preferably 0.02；The x is preferably 0.04；In other embodiments provided by the invention, the x is preferably
0.06.The R is the one or more in La, Y and Lu, and wherein Y is necessary；In some embodiments provided by the invention,
The R is preferably Y；In some embodiments provided by the invention, the R is preferably La and Y；It is provided by the invention other
In embodiment, the R is preferably La and Y and Lu.
Fluorescent powder of the present invention is with Ce3+For activator, which launches green light under blue light excitation, so that the fluorescence
Blue light can be converted green light by powder, so that applied to yellow fluorescent powder conversion white light LEDs, and improve its colour rendering.
Present invention also offers a kind of preparation method of above-mentioned fluorescent powder, including：A) by before Sr presomas, R presomas, Ce
Drive body to mix with Sc presomas, carry out high temperature solid state reaction, obtain fluorescent powder；
The molar ratio of Sr, R, Ce and Sc are 1 in the Sr presomas, R presomas, Ce presomas and Sc presomas：(2-x)：x：
2；0 ＜ x ＜ 2；The R is the one or more in La, Y and Lu, and wherein Y is necessary.
Wherein, the x and R are same as above, and details are not described herein.
The compound for including Sr that the Sr presomas are well known in the art, has no special limitation, in of the invention
One or more preferably in the nitrate of the carbonate of Sr, the oxide of Sr, the oxalates of Sr and Sr, more preferably Sr
Carbonate；The R presomas are the one or more in the nitrate of the carbonate of R, the oxide of R, the oxalates of R and R, more
The preferably oxide of R；The Ce presomas are in the nitrate of the carbonate of Ce, the oxide of Ce, the oxalates of Ce and Ce
One or more, more preferably Ce oxide；The Sc presomas are the carbonate of Sc, the oxide of Sc, the oxalic acid of Sc
The oxide of one or more in the nitrate of salt and Sc, more preferably Sc.
The Sr presomas, R presomas, Ce presomas and the purity of Sc presomas are preferably not less than independently of one another
99.5%, purity is higher, and the impurity of obtained fluorescent powder is fewer.
Sr presomas, R presomas, Ce presomas are mixed with Sc presomas, it is preferred to use grinding is mixed；Mixing
Afterwards, tabletting is preferably carried out, tabletting is carried out after more preferably drying；The pressure of the tabletting is preferably 1 ~ 3 MPa.
After tabletting, high temperature sintering is carried out in a reducing atmosphere；The reducing atmosphere is well known to those skilled in the art dry
Pathogenic dryness atmosphere, has no special limitation, is preferably ammonia or nitrogen hydrogen mixeding gas in the present invention；The temperature of the high temperature sintering
Preferably 1200 DEG C ~ 1400 DEG C, more preferably 1250 DEG C ~ 1350 DEG C；In some embodiments provided by the invention, the high temperature
The temperature of sintering is preferably 1250 DEG C；In other embodiments provided by the invention, the temperature of the high temperature sintering is preferably
1350℃。
The time of the high temperature sintering is preferably 2 ~ 12 h, more preferably 4 ~ 6 h；In some embodiments provided by the invention
In, the time of the high temperature sintering is preferably 4 h；In other embodiments provided by the invention, the high temperature sintering when
Between be preferably 6 h.
The high temperature sintering carries out preferably in high temperature furnace；After high temperature sintering, room temperature is cooled to the furnace, you can obtain fluorescence
Powder.
The present invention is with Ce3+For activator, using high temperature solid state reaction, a kind of green emitting phosphor is successfully prepared.
In order to further illustrate the present invention, with reference to embodiments to a kind of green emitting phosphor provided by the invention and its system
Preparation Method is described in detail.
Reagent used is commercially available in following embodiments.
Embodiment 1
Raw material is SrCO3(analysis is pure), Y2O3(analysis is pure), CeO2(99.99%) and Sc2O3(analysis is pure), molar ratio 1:
0.99:0.02:1, above-mentioned raw materials are ground, it is dry after 2 MPa pressure lower sheeting, load crucible, ammonia also Primordial Qi
Under atmosphere, in high temperature furnace, when 1250 DEG C of sintering 4 are small, furnace cooling to room temperature, obtaining theoretical chemistry component is
SrY1.98Ce0.02Sc2O7Fluorescent powder.
The fluorescent material obtained in embodiment 1 is analyzed using Fluorescence Spectrometer, obtains its exciting light spectrogram, is such as schemed
Shown in 1.It can be seen that the excitation band of the fluorescent material mainly falls in blue light region.
The fluorescent material obtained in embodiment 1 is analyzed using Fluorescence Spectrometer, obtains its launching light spectrogram, is such as schemed
Shown in 2.It can be seen that the material can effectively be stimulated by blue light and launch green light, thus the fluorescent material blue light can be converted into it is green
Light.
Embodiment 2
Raw material is SrCO3(analysis is pure), Y2O3(analysis is pure), CeO2(99.99%) and Sc2O3(analysis is pure), molar ratio 1:
0.98:0.04:1, above-mentioned raw materials are ground, it is dry after 1 MPa pressure lower sheeting, load crucible, ammonia also Primordial Qi
Under atmosphere, in high temperature furnace, when 1250 DEG C of sintering 4 are small, furnace cooling to room temperature, obtaining theoretical chemistry component is
SrY1.96Ce0.04Sc2O7Fluorescent powder.
The fluorescent material obtained in embodiment 2 is analyzed using Fluorescence Spectrometer, obtains its exciting light spectrogram, is such as schemed
Shown in 3.It can be seen that the excitation band of the fluorescent powder mainly falls in blue light region.
The fluorescent material obtained in embodiment 2 is analyzed using Fluorescence Spectrometer, obtains its launching light spectrogram, is such as schemed
Shown in 4.It can be seen that the fluorescent powder can effectively be stimulated by blue light and launch green light, thus the fluorescent powder blue light can be converted into it is green
Light.
Embodiment 3
Raw material is SrCO3(analysis is pure), La2O3(analysis is pure), Y2O3(analysis is pure), CeO2(99.99%) and Sc2O3(analysis is pure),
Molar ratio is 1:0.47:0.5:0.06:1, above-mentioned raw materials are ground, it is dry after 3 MPa pressure lower sheeting, load earthenware
Crucible, under the reducing atmosphere of nitrogen and hydrogen mixture, in high temperature furnace, when 1350 DEG C of sintering 6 are small, furnace cooling to room temperature, obtains theory
Chemical composition is SrLa0.94YCe0.06Sc2O7Fluorescent powder.
The fluorescent material obtained in embodiment 3 is analyzed using Fluorescence Spectrometer, obtains its exciting light spectrogram, is such as schemed
Shown in 5.It can be seen that the excitation band of the fluorescent powder mainly falls in blue light region.
The fluorescent material obtained in embodiment 3 is analyzed using Fluorescence Spectrometer, obtains its launching light spectrogram, is such as schemed
Shown in 6.It can be seen that the fluorescent powder can effectively be stimulated by blue light and launch green light, thus the fluorescent powder blue light can be converted into it is green
Light.
Embodiment 4
Raw material is SrCO3(analysis is pure), La2O3(analysis is pure), Lu2O3(analysis is pure), Y2O3(analysis is pure), CeO2(99.99%) and
Sc2O3(analysis is pure), molar ratio 1:0.25:0.22:0.5:0.06:1, above-mentioned raw materials are ground, it is dry after 1.5
The pressure lower sheeting of MPa, loads crucible, and under ammonia reducing atmosphere, in high temperature furnace, when 1350 DEG C of sintering 6 are small, furnace cooling is arrived
Room temperature, it is SrLa to obtain theoretical chemistry component0.5Lu0.44YCe0.06Sc2O7Fluorescent powder.
The fluorescent material obtained in embodiment 4 is analyzed using Fluorescence Spectrometer, obtains its exciting light spectrogram, is such as schemed
Shown in 7.It can be seen that the excitation band of the fluorescent powder mainly falls in blue light region.
The fluorescent material obtained in embodiment 4 is analyzed using Fluorescence Spectrometer, obtains its launching light spectrogram, is such as schemed
Shown in 8.It can be seen that the fluorescent powder can effectively be stimulated by blue light and launch green light, thus the fluorescent powder blue light can be converted into it is green
Light.
Claims (8)
- A kind of 1. green emitting phosphor, shown in the chemical general formula such as formula (I) of the fluorescent powder：SrR2-xCexSc2O7(I)；Wherein, 0 ＜ x ＜ 2；R is the one or more in La, Y and Lu, and wherein Y is necessary.
- 2. fluorescent powder according to claim 1, it is characterised in that the x is 0.02 ~ 0.12.
- A kind of 3. preparation method of green emitting phosphor, it is characterised in that including：A) by Sr presomas, R presomas, Ce presomas Mixed with Sc presomas, carry out high temperature solid state reaction, obtain fluorescent powder of the chemical general formula as shown in formula (I)；SrR2-xCexSc2O7 (I)；The molar ratio of Sr, R, Ce and Sc are 1 in the Sr presomas, R presomas, Ce presomas and Sc presomas：(2-x)：x： 2；0 ＜ x ＜ 2；The R is the one or more in La, Y and Lu, and wherein Y is necessary.
- 4. preparation method according to claim 3, it is characterised in that the Sr presomas, R presomas, Ce presomas with The purity of Sc presomas is not less than 99.5%.
- 5. preparation method according to claim 3, it is characterised in that the step A) be specially：Before Sr presomas, R Drive body, Ce presomas are mixed with Sc presomas, after tabletting, are carried out high temperature sintering in a reducing atmosphere, are obtained fluorescent powder.
- 6. preparation method according to claim 5, it is characterised in that the Sr presomas are carbonate, the oxygen of Sr of Sr One or more in the nitrate of compound, the oxalates of Sr and Sr；The R presomas are the carbonate of R, the oxide of R, R Oxalates and R nitrate in one or more；The Ce presomas are the carbonate of Ce, the oxide of Ce, the grass of Ce One or more in the nitrate of hydrochlorate and Ce；The Sc presomas are the carbonate of Sc, the oxide of Sc, the oxalates of Sc With the one or more in the nitrate of Sc.
- 7. preparation method according to claim 5, it is characterised in that the reducing atmosphere is ammonia or nitrogen and hydrogen mixture Body.
- 8. preparation method according to claim 5, it is characterised in that the temperature of the high temperature sintering is 1000 DEG C ~ 1400 ℃；The time of the high temperature sintering is 2 ~ 12 h.
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH04132653A (en) * | 1990-09-25 | 1992-05-06 | Mitsubishi Kasei Corp | Humidity sensor element |
| CN103451600A (en) * | 2012-05-30 | 2013-12-18 | 海洋王照明科技股份有限公司 | Cerium doped alkali metal scandate luminescent thin film, and preparation method and application thereof |
| CN105820817A (en) * | 2016-04-13 | 2016-08-03 | 厦门大学 | Scandate green phosphor and preparation method thereof |
| CN105838369A (en) * | 2016-04-13 | 2016-08-10 | 厦门大学 | Orange red fluorescent powder and preparation method thereof |
| CN106978176A (en) * | 2017-05-18 | 2017-07-25 | 济南大学 | A kind of yellow fluorescent powder and preparation method and its application in luminescent device |
-
2017
- 2017-11-13 CN CN201711113735.5A patent/CN107903896A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH04132653A (en) * | 1990-09-25 | 1992-05-06 | Mitsubishi Kasei Corp | Humidity sensor element |
| CN103451600A (en) * | 2012-05-30 | 2013-12-18 | 海洋王照明科技股份有限公司 | Cerium doped alkali metal scandate luminescent thin film, and preparation method and application thereof |
| CN105820817A (en) * | 2016-04-13 | 2016-08-03 | 厦门大学 | Scandate green phosphor and preparation method thereof |
| CN105838369A (en) * | 2016-04-13 | 2016-08-10 | 厦门大学 | Orange red fluorescent powder and preparation method thereof |
| CN106978176A (en) * | 2017-05-18 | 2017-07-25 | 济南大学 | A kind of yellow fluorescent powder and preparation method and its application in luminescent device |
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Inventor after: Bian Liang Inventor after: Zhang Xiaoyan Inventor after: Li Qin Inventor after: Ma Xiuqiao Inventor after: Dong Faqin Inventor after: Song Mianxin Inventor after: Li Weimin Inventor after: Zou Hao Inventor after: Gu Xiaobin Inventor after: Nie Jianan Inventor after: Zhang Guoxian Inventor before: Ma Xiuqiao |
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Application publication date: 20180413 |