CN105838369A - Orange red fluorescent powder and preparation method thereof - Google Patents
Orange red fluorescent powder and preparation method thereof Download PDFInfo
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- CN105838369A CN105838369A CN201610227201.4A CN201610227201A CN105838369A CN 105838369 A CN105838369 A CN 105838369A CN 201610227201 A CN201610227201 A CN 201610227201A CN 105838369 A CN105838369 A CN 105838369A
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- presoma
- fluorescent powder
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- 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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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B20/00—Energy efficient lighting technologies, e.g. halogen lamps or gas discharge lamps
Abstract
The invention provides an orange red fluorescent powder and a preparation method thereof, and belongs to the technical field of luminescent material. The general chemical formula of the orange red fluorescent powder is DR<1-x>CexScO4, wherein 0<x<1, D is at least one of Mg, Ca, and Sr (Sr is necessary); R is at least one of La, Y, and Lu (La is necessary). The preparation method of the orange red fluorescent powder includes: mixing the D precursor, R precursor, Ce precursor and Sc precursor, performing the solid phase reaction at high temperature to obtain the orange red fluorescent powder with general chemical formula DR<1-x>CexScO4. The fluorescent powder has novel chemical composition, uses Ce<3+> as an activator, and can emit orange red light under the blue light excitation, so that the fluorescent powder can translate blue light into orange red light. The fluorescent powder can be used for yellow fluorescent powder to translate white light LED, and can improve color rendering.
Description
Technical field
The invention belongs to luminescent material technical field, especially relate to a kind of orange red fluorescent powder and preparation method thereof.
Background technology
Rely on LED conversion to realize white light and mainly have a following several ways:
1) multi-chip LED.RGB three-primary color LED chip package is produced white light together.RGB three-color LED is utilized to combine
The technology constituting white light LEDs is the most efficient, it is to avoid the energy that in light-emitting phosphor transformation process, Stokes shift causes damages
Lose, the highest luminous efficiency can be obtained, the light intensity of 3 kind different photochromic LEDs can be separately controlled, it is achieved Full-color color-changing simultaneously
Effect.But each of the white light LEDs that the method is made is photochromic with driving electric current and variations in temperature inconsistent, decay speed in time
Degree also differs, and its heat dissipation problem also ratio is more prominent, and production cost remains high.
2) three primary colors fluorescent powder conversion LED.Three primary colors fluorescent powder conversion LED can be on the premise of higher photoluminescence efficiency, effectively
Ground promotes the color rendering properties of LED, and it has higher luminous efficacy and color rendering index.The common method that three primary colours white light LEDs realizes
It is to utilize ultraviolet light (UV) LED to excite one group of Huang that effectively can be excited by ultraviolet light, green, blue (RGB) three primary colors fluorescent powder, its
Feature is that the visible light part of spectrum is divided generation by fluorescence completely.But, it has the disadvantage in that electric light transformation efficiency is relatively low；
Powder body mixing is more difficult, has high efficiency fluorescent material yet-to-be developed；Encapsulating material is the most aging under ultraviolet light irradiates, and the life-span is shorter,
There is the hidden danger that ultraviolet is revealed；Highly efficient power type UVLED is difficult to preparation.
3) yellow fluorescent powder converts LED.Blue light GaN chip+doping Ce at present3+, the yttrium-aluminium-garnet (Y of Yellow light-emitting low temperature3Al5O12:Ce3+,
YAG) fluorescent material is modal two primary colours fluorescent material conversion LEDs.As currently commercially the most ripe, be easiest to realize white light
LED technology, it has the advantages such as power consumption little, volume is little, lightweight, compact conformation and causes the extensive concern of people.?
In this device, the blue light that GaN sends excites YAG and obtains sodium yellow, unabsorbed blue light and gold-tinted be compound obtain white
Light, therefore the YAG fluorescent powder at blue light or purple light excited lower Yellow light-emitting low temperature is the class fluorescent material that currently used amount is maximum.But by
Lacking HONGGUANG in yellow fluorescent powder converts the spectrum of LED, so the color rendering properties of this type of LED is poor, object shines at this type of light source
Penetrate the color that lower presented color and object presented under natural light (sunlight) irradiates and have certain deviation.
Certainly in yellow fluorescent powder, suitably add (orange) red fluorescence powder, yellow fluorescent powder can be significantly improved and convert white light LEDs
Color rendering properties.
SrLnScO4(Ln=La, Ce, Pr, Nd and Sm) be space group corresponding to a paracrystalline organizations be the material (Rina of Abma
Patel, Charles Simon and Mark T.Weller, Journal of Solid State Chemistry, Vol.180,
No.1,349-359,2007), this material is generally used for doing dielectric ceramic, and its purposes belongs to different technology from the present patent application
Field.
The open a kind of humidity sensor material of Japan Patent JPH04132653, composition includes SrLaScO4, but its purposes with this
Bright application belongs to different technical fields.
At present, SrLnScO4(Ln=La, Ce, Pr, Nd and Sm) is generally used for doing dielectric ceramic or sensor material, yet there are no
It is about the application in terms of luminescent material.
Summary of the invention
An object of the present invention is to provide a kind of orange red fluorescent powder.
It is a further object of the present invention to provide the preparation method of a kind of orange red fluorescent powder.
Shown in the chemical general formula of described orange red fluorescent powder such as formula (I):
DR1-xCexScO4(I)；
Wherein, 0 ＜ x ＜ 1；Described D is at least one in Mg, Ca and Sr etc., and wherein Sr is necessary；Described R is
At least one in La, Y, Lu etc., wherein La is necessary.
Preferably, described x is 0.02～0.5.
The preparation method of described orange red fluorescent powder is as follows:
D presoma, R presoma, Ce presoma are mixed with Sc presoma, carries out high temperature solid state reaction, obtain chemical general formula
Fluorescent material as shown in formula (I)；
DR1-xCexScO4(I)；
In described D presoma, R presoma, Ce presoma, Sc presoma, the mol ratio of D, R, Ce, Sc is 1: (1-x):
x∶1；0 ＜ x ＜ 1；Described D is at least one in Mg, Ca, Sr etc., and wherein Sr is necessary；Described R is La, Y,
At least one in Lu etc., wherein La is necessary.
Preferably, described D presoma, R presoma, Ce presoma are all not less than 99.5% with the purity of Sc presoma.
Preferably, described D presoma be the carbonate of D, the oxide of D, the oxalates of D, D nitrate etc. at least
A kind of；
Described R presoma is at least one in nitrate of the carbonate of R, the oxide of R, the oxalates of R, R etc.；
Described Ce presoma is at least in nitrate of the carbonate of Ce, the oxide of Ce, the oxalates of Ce, Ce etc.
Kind；
Described Sc presoma is at least in nitrate of the carbonate of Sc, the oxide of Sc, the oxalates of Sc, Sc etc.
Kind.
Described high temperature solid state reaction can use after compression, carries out high temperature sintering in reducing atmosphere.
Described reducing atmosphere can be ammonia or nitrogen hydrogen mixeding gas；The temperature of described high temperature sintering can be 1250～1550 DEG C；Described
The time of high temperature sintering can be 4～10h.
The invention provides a kind of orange red fluorescent powder and preparation method thereof.The chemical composition of this fluorescent material is DR1-xCexScO4；Its
In, 0 ＜ x ＜ 1；D is at least one in Mg, Ca and Sr etc., and wherein Sr is necessary；R is La, Y and Lu etc.
In at least one, wherein La is necessary.It is an advantage of the invention that fluorescent material of the present invention has brand-new chemical composition, with
Ce3+For activator, this fluorescent material excites lower energy to launch orange red light at blue light, so that blue light can be converted into orange red light by this fluorescent material,
Thus be applied to yellow fluorescent powder and convert white light LEDs, and improve its color rendering properties.
Accompanying drawing explanation
Fig. 1 is the X ray diffracting spectrum of the fluorescent material obtained in the embodiment of the present invention 1；
Fig. 2 is the exciting light spectrogram of the fluorescent material obtained in the embodiment of the present invention 1；
Fig. 3 is the emission spectrum figure of the fluorescent material obtained in the embodiment of the present invention 1；
Fig. 4 is the exciting light spectrogram of the fluorescent material obtained in the embodiment of the present invention 2；
Fig. 5 is the emission spectrum figure of the fluorescent material obtained in the embodiment of the present invention 2；
Fig. 6 is the exciting light spectrogram of the fluorescent material obtained in the embodiment of the present invention 3；
Fig. 7 is the emission spectrum figure of the fluorescent material obtained in the embodiment of the present invention 3；
Fig. 8 is the exciting light spectrogram of the fluorescent material obtained in the embodiment of the present invention 4；
Fig. 9 is the emission spectrum figure of the fluorescent material obtained in the embodiment of the present invention 4；
Figure 10 is the exciting light spectrogram of the fluorescent material obtained in the embodiment of the present invention 5；
Figure 11 is the emission spectrum figure of the fluorescent material obtained in the embodiment of the present invention 5.
Detailed description of the invention
Below in conjunction with embodiment and accompanying drawing, technical scheme is clearly and completely described, it is clear that described
Embodiment be only a part of embodiment of the present invention rather than whole embodiments.Based on the embodiment in the present invention, ability
Territory those of ordinary skill it may also be made that other embodiments.
The invention provides a kind of orange red fluorescent powder, shown in the chemical general formula of this fluorescent material such as formula (I):
DR1-xCexScO4(I)；
Wherein, 0 ＜ x ＜ 1, preferably 0.02～0.5, more preferably 0.02～0.05, in some embodiments that the present invention provides
In, described x is preferably 0.02；In some embodiments that the present invention provides, described x is preferably 0.05；There is provided in the present invention
Some embodiments in, described x is preferably 0.1；In other embodiments that the present invention provides, described x is preferably 0.5；
Described D is at least one in Mg, Ca and Sr etc., and wherein Sr is necessary；In some embodiments that the present invention provides,
Described D is preferably Sr；In some embodiments that the present invention provides, described D is preferably Sr and Mg；There is provided in the present invention
In some embodiments, described D is preferably Sr and Ca；In other embodiments that the present invention provides, described D is preferably Sr
With Mg and Ca.Described R is at least one in La, Y and Lu etc., and wherein La is necessary；One provided in the present invention
In a little embodiments, described R is preferably La；In some embodiments that the present invention provides, described R is preferably La and Y；At this
In other embodiments that invention provides, described R is preferably La and Y and Lu.
Fluorescent material of the present invention is with Ce3+For activator, orange red light launched under blue light excites by this fluorescent material, so that this fluorescent material
Blue light can be converted orange red light, thus be applied to yellow fluorescent powder and convert white light LEDs, and improve its color rendering properties.
Present invention also offers the preparation method of a kind of above-mentioned fluorescent material, including: by D presoma, R presoma, Ce presoma
Mix with Sc presoma, carry out high temperature solid state reaction, obtain fluorescent material；
Described D presoma, R presoma, Ce presoma are 1:(1-x with the mol ratio of D, R, Ce in Sc presoma with Sc):
X:1；0 ＜ x ＜ 1；Described D is at least one in Mg, Ca and Sr etc., and wherein Sr is necessary；Described R be La,
At least one in Y Yu Lu etc., wherein La is necessary.
Wherein, described x with D and R is the most same as above, does not repeats them here.
Described D presoma is the compound comprising D well known in the art, there is no special restriction, is preferably in the present invention
At least one in the nitrate of the carbonate of D, the oxide of D, the oxalates of D and D etc., the carbonate of more preferably D；
Described R presoma is at least one in the nitrate of oxalates and the R of the carbonate of R, the oxide of R, R etc., more preferably
Oxide for R；Described Ce presoma is the carbonate of Ce, the oxide of Ce, the oxalates of Ce and the nitrate etc. of Ce
In at least one, the oxide of more preferably Ce；Described Sc presoma is the carbonate of Sc, the oxide of Sc, Sc
At least one in the nitrate of oxalates and Sc etc., the oxide of more preferably Sc.
Described D presoma, R presoma, Ce presoma are not less than 99.5% the most independently of one another with the purity of Sc presoma,
Purity is the highest, and the impurity of the fluorescent material obtained is the fewest.
D presoma, R presoma, Ce presoma are mixed with Sc presoma, it is preferred to use grind and mix；After mixing,
Preferably carry out tabletting, carry out tabletting the most after drying；The pressure of described tabletting is preferably 1～3MPa.
After tabletting, reducing atmosphere carries out high temperature sintering；The dry atmosphere that described reducing atmosphere is well known to those skilled in the art
, there is no special restriction, the present invention be preferably ammonia or nitrogen hydrogen mixeding gas；The temperature of described high temperature sintering is preferably
1250～1550 DEG C, more preferably 1300～1450 DEG C, it is further preferably 1300～1400 DEG C；Some provided in the present invention are implemented
In example, the temperature of described high temperature sintering is preferably 1300 DEG C；In some embodiments that the present invention provides, described high temperature sintering
Temperature is preferably 1400 DEG C；In other embodiments that the present invention provides, the temperature of described high temperature sintering is preferably 1450 DEG C.
The time of described high temperature sintering is preferably 4～10h, more preferably 5～8h；In some embodiments that the present invention provides,
The time of described high temperature sintering is preferably 5h；In other embodiments that the present invention provides, the time of described high temperature sintering is excellent
Elect 8h as.
Described high temperature sintering is preferably carried out in high temperature furnace；After high temperature sintering, cool to room temperature with the furnace, i.e. can get fluorescent material.
The present invention is with Ce3+For activator, use high temperature solid state reaction, successfully prepare a kind of orange red fluorescent powder.
In order to further illustrate the present invention, a kind of orange red fluorescent powder present invention provided below in conjunction with embodiment and preparation side thereof
Method is described in detail.
Reagent used in following example is commercially available.
Embodiment 1
Raw material is SrCO3(analytical pure), La2O3(analytical pure), CeO2And Sc (99.99%)2O3(analytical pure), mol ratio is 1:
0.49: 0.02: 0.5, above-mentioned raw materials is ground, after drying at the pressure lower sheeting of 2MPa, loads crucible, ammonia is also
Under Primordial Qi atmosphere, in high temperature furnace, 1450 DEG C of sintering 5h, furnace cooling is to room temperature, and obtaining theoretical chemistry composition is SrLa0.98Ce0.02ScO4
Fluorescent material.
Utilize X-ray diffraction that the fluorescent material obtained in embodiment 1 is analyzed, obtain its X ray diffracting spectrum, such as figure
Shown in 1.
Utilize fluorescence spectrophotometer that the fluorescent material obtained in embodiment 1 is analyzed, obtain its exciting light spectrogram, such as Fig. 2 institute
Show.The excitation band of this fluorescent material visible mainly falls in blue light region.
Utilize fluorescence spectrophotometer that the fluorescent material obtained in embodiment 1 is analyzed, obtain its emission spectrum figure, such as Fig. 3 institute
Show.This material visible can effectively be stimulated by blue light and launch orange red light, thus blue light can be converted into orange red light by this fluorescent material.
Embodiment 2
Raw material is SrCO3(analytical pure), La2O3(analytical pure), CeO2And Sc (99.99%)2O3(analytical pure), mol ratio is 1:
0.25: 0.5: 0.5, above-mentioned raw materials is ground, after drying at the pressure lower sheeting of 1MPa, loads crucible, ammonia is also
Under Primordial Qi atmosphere, in high temperature furnace, 1450 DEG C of sintering 5h, furnace cooling is to room temperature, and obtaining theoretical chemistry composition is SrLa0.5Ce0.5ScO4
Fluorescent material.
Utilize fluorescence spectrophotometer that the fluorescent material obtained in embodiment 2 is analyzed, obtain its exciting light spectrogram, such as Fig. 4 institute
Show.The excitation band of this fluorescent material visible mainly falls in blue light region.
Utilize fluorescence spectrophotometer that the fluorescent material obtained in embodiment 2 is analyzed, obtain its emission spectrum figure, such as Fig. 5 institute
Show.This fluorescent material visible can effectively be stimulated by blue light and launch orange red light, thus blue light can be converted into orange red light by this fluorescent material.
Embodiment 3
Raw material is SrCO3(analytical pure), MgCO3(analytical pure), La2O3(analytical pure), Y2O3(analytical pure), CeO2(99.99%) and
Sc2O3(analytical pure), mol ratio is 0.95: 0.05: 0.45: 0.025: 0.05: 0.5, is ground by above-mentioned raw materials, does
At the pressure lower sheeting of 3MPa after dry, load crucible, under the reducing atmosphere of nitrogen and hydrogen mixture, in high temperature furnace, 1450 DEG C of burnings
Knot 5h, furnace cooling is to room temperature, and obtaining theoretical chemistry composition is Sr0.95Mg0.05La0.9Y0.05Ce0.05ScO4Fluorescent material.
Utilize fluorescence spectrophotometer that the fluorescent material obtained in embodiment 3 is analyzed, obtain its exciting light spectrogram, such as Fig. 6 institute
Show.The excitation band of this fluorescent material visible mainly falls in blue light region.
Utilize fluorescence spectrophotometer that the fluorescent material obtained in embodiment 3 is analyzed, obtain its emission spectrum figure, such as Fig. 7 institute
Show.This fluorescent material visible can effectively be stimulated by blue light and launch orange red light, thus blue light can be converted into orange red light by this fluorescent material.
Embodiment 4
Raw material is SrCO3(analytical pure), CaCO3(analytical pure), La2O3(analytical pure), Y2O3(analytical pure), CeO2(99.99%) and
Sc2O3(analytical pure), mol ratio is 0.9: 0.1: 0.35: 0.1: 0.1: 0.5, is ground by above-mentioned raw materials, after drying
At the pressure lower sheeting of 1.5MPa, loading crucible, under ammonia reducing atmosphere, in high temperature furnace, 1400 DEG C of sintering 8h, with stove
Being cooled to room temperature, obtaining theoretical chemistry composition is Sr0.9Ca0.1La0.7Y0.2Ce0.1ScO4Fluorescent material.
Utilize fluorescence spectrophotometer that the fluorescent material obtained in embodiment 4 is analyzed, obtain its exciting light spectrogram, such as Fig. 8 institute
Show.The excitation band of this fluorescent material visible mainly falls in blue light region.
Utilize fluorescence spectrophotometer that the fluorescent material obtained in embodiment 4 is analyzed, obtain its emission spectrum figure, such as Fig. 9 institute
Show.This fluorescent material visible can effectively be stimulated by blue light and launch orange red light, thus blue light can be converted into orange red light by this fluorescent material.
Embodiment 5
Raw material is SrCO3(analytical pure), MgCO3(analytical pure), CaCO3(analytical pure), La2O3(analytical pure), Y2O3(analytical pure),
Lu2O3(analytical pure), CeO2And Sc (99.99%)2O3(analytical pure), mol ratio is 0.9: 0.05: 0.05: 0.4: 0.04:
0.05: 0.02: 0.5, raw mill is mixed, after drying in the pressure lower sheeting of 2.5MPa, loading crucible, ammonia reduction
Under atmosphere, in high temperature furnace, 1300 DEG C of sintering 5h, furnace cooling is to room temperature, and obtaining theoretical chemistry composition is
Sr0.9Mg0.05Ca0.05La0.8Y0.08Lu0.1Ce0.02ScO4Fluorescent material.
Utilize fluorescence spectrophotometer that the fluorescent material obtained in embodiment 5 is analyzed, obtain its exciting light spectrogram, such as Figure 10 institute
Show.The excitation band of this fluorescent material visible mainly falls in blue light region.
Utilize fluorescence spectrophotometer that the fluorescent material obtained in embodiment 5 is analyzed, obtain its emission spectrum figure, such as Figure 11 institute
Show.This fluorescent material visible can effectively be stimulated by blue light and launch orange red light, thus blue light can be converted into orange red light by this fluorescent material.
Claims (10)
1. an orange red fluorescent powder, it is characterised in that shown in its chemical general formula such as formula (I):
DR1-xCexScO4(I)；
Wherein, 0 ＜ x ＜ 1；Described D is Mg, Ca and at least one in Sr, and wherein Sr is necessary；Described R be La,
At least one in Y, Lu, wherein La is necessary.
2. a kind of orange red fluorescent powder, it is characterised in that described x is 0.02～0.5.
The preparation method of a kind of orange red fluorescent powder the most as claimed in claim 1, it is characterised in that it specifically comprises the following steps that
D presoma, R presoma, Ce presoma are mixed with Sc presoma, carries out high temperature solid state reaction, obtain chemical general formula
Fluorescent material as shown in formula (I)；
DR1-xCexScO4 (I)。
The preparation method of a kind of orange red fluorescent powder the most as claimed in claim 3, it is characterised in that described D presoma, R forerunner
In body, Ce presoma, Sc presoma, the mol ratio of D, R, Ce, Sc is 1: (1-x): x: 1；0 ＜ x ＜ 1；Described D
For at least one in Mg, Ca, Sr, wherein Sr is necessary；Described R is at least one in La, Y, Lu, wherein
La is necessary；Described D presoma, R presoma, Ce presoma, the purity of Sc presoma are all not less than 99.5%.
The preparation method of a kind of orange red fluorescent powder the most as claimed in claim 3, it is characterised in that described D presoma is the carbon of D
Hydrochlorate, the oxide of D, the oxalates of D, D nitrate at least one.
The preparation method of a kind of orange red fluorescent powder the most as claimed in claim 3, it is characterised in that described R presoma is the carbon of R
Hydrochlorate, the oxide of R, the oxalates of R, R nitrate at least one.
The preparation method of a kind of orange red fluorescent powder the most as claimed in claim 3, it is characterised in that described Ce presoma is Ce's
Carbonate, the oxide of Ce, the oxalates of Ce, Ce nitrate at least one.
The preparation method of a kind of orange red fluorescent powder the most as claimed in claim 3, it is characterised in that described Sc presoma is Sc's
Carbonate, the oxide of Sc, the oxalates of Sc, Sc nitrate at least one.
The preparation method of a kind of orange red fluorescent powder the most as claimed in claim 3, it is characterised in that described high temperature solid state reaction uses
After compression, reducing atmosphere carries out high temperature sintering.
The preparation method of a kind of orange red fluorescent powder the most as claimed in claim 9, it is characterised in that described reducing atmosphere is ammonia
Or nitrogen hydrogen mixeding gas；The temperature of described high temperature sintering can be 1250～1550 DEG C；The time of described high temperature sintering can be 4～10h.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107903896A (en) * | 2017-11-13 | 2018-04-13 | 河北紫旭节能环保技术咨询有限公司 | A kind of green emitting phosphor and preparation method thereof |
| CN113416542A (en) * | 2021-08-12 | 2021-09-21 | 华南理工大学 | Red fluorescent powder capable of being excited by blue light and preparation method thereof |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH04132653A (en) * | 1990-09-25 | 1992-05-06 | Mitsubishi Kasei Corp | Humidity sensor element |
| CN1981018A (en) * | 2004-06-30 | 2007-06-13 | 三菱化学株式会社 | Fluorescent substance, light-emitting element using the same, image display device, and illuminating device |
-
2016
- 2016-04-13 CN CN201610227201.4A patent/CN105838369B/en not_active Expired - Fee Related
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH04132653A (en) * | 1990-09-25 | 1992-05-06 | Mitsubishi Kasei Corp | Humidity sensor element |
| CN1981018A (en) * | 2004-06-30 | 2007-06-13 | 三菱化学株式会社 | Fluorescent substance, light-emitting element using the same, image display device, and illuminating device |
Non-Patent Citations (1)
| Title |
|---|
| RINA PATEL等: "LnSrScO4 ( Ln= La, Ce, Pr, Nd and Sm) systems and structurecorrelations for A2BO4 (K2NiF4) structure types", 《JOURNAL OF SOLID STATE CHEMISTRY》 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107903896A (en) * | 2017-11-13 | 2018-04-13 | 河北紫旭节能环保技术咨询有限公司 | A kind of green emitting phosphor and preparation method thereof |
| CN113416542A (en) * | 2021-08-12 | 2021-09-21 | 华南理工大学 | Red fluorescent powder capable of being excited by blue light and preparation method thereof |
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| CN105838369B (en) | 2018-07-03 |
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