CN107746709A - A kind of tunable luminescence rare earth ion doping Mg2Al4Si5O18Fluorescent material and preparation method thereof - Google Patents
A kind of tunable luminescence rare earth ion doping Mg2Al4Si5O18Fluorescent material and preparation method thereof Download PDFInfo
- Publication number
- CN107746709A CN107746709A CN201711158145.4A CN201711158145A CN107746709A CN 107746709 A CN107746709 A CN 107746709A CN 201711158145 A CN201711158145 A CN 201711158145A CN 107746709 A CN107746709 A CN 107746709A
- Authority
- CN
- China
- Prior art keywords
- fluorescent material
- compound containing
- rare earth
- ion doping
- earth ion
- 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.)
- Pending
Links
Classifications
-
- 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
- C09K11/7783—Luminescent, e.g. electroluminescent, chemiluminescent materials containing inorganic luminescent materials containing rare earth metals containing two or more rare earth metals one of which being europium
- C09K11/7792—Aluminates
Abstract
One kind realizes Ce by ionic bridge3+, Tb3+, Eu3+Adulterate cordierite structure Mg2Al4Si5O18Luminous method that fluorescent material is tunable, belongs to fluorescent material technical field.The chemical general formula of the fluorescent material is (Mg1‑x‑y‑zCexTbyEuz)2Al4Si5O18, x, y, z is molar fraction, and its scope is respectively 0 ＜ x≤0.1,0 ＜ y≤0.4,0 ＜ z≤0.1.Ce3+, Tb3+, Eu3+In Mg2Al4Si5O18In photoluminescence spectrum be located at blue and green light and red light region respectively, by Ce → Tb → Eu energy transmission, realize the tunable of blue, green, red three kinds of coloured light intensity.
Description
Technical field
The present invention relates to fluorescent material technical field, more particularly to a kind of tunable luminescence rare earth ion doping
Mg2Al4Si5O18Fluorescent material and preparation method thereof.
Background technology
Trivalent cerium ion doped yttrium aluminum garnet（YAG:Ce3+）Combined with the chip of blue light-emitting is answered in current white light LEDs
With widest implementation.White color source is single caused by this mode, and colour temperature is higher, and colour rendering index is relatively low.It is blue outer/near
The chip of ultraviolet light and three kinds of fluorescence materials of red, green, blue can be produced by ultraviolet/near ultraviolet excitation and combined, sent white light, have
Colored is stable, reappears the advantages that power is strong, is one of developing direction of white light LEDs.Ce3+Ion has 4f1Electron configuration, present
D → f transition the banding allowed for eelctric dipole is launched；Due to Ce3+The naked exposed on external layer of 5d electronics, it is luminous to receive crystalline field environment shadow
Sound is larger, and with the change of matrix composition or structure, transmitting band spectral peak can be at the ultraviolet diverse location to red light region.Tb3+
And Eu3+Transmitting band spectral peak respectively in green glow and red light region.
Cordierite structure Mg2Al4Si5O18With (Si4Al2)O18Tetrahedron hexatomic ring is basic framework, MgO6Octahedron passes through
Bridging oxygen SiO4With AlO4Tetrahedron link forms Mg6O36Octahedra hexatomic ring, there is good physics and chemical stability.Rare earth
The alternative Mg of ion2+Ion enters lattice, forms solid solution.
Ce3+And Eu3+Between metal electron migration quenching effect（Ce3+ + Eu3+ = Ce4+ + Eu2+）Limit Ce3+
And Eu3+Between energy transfer, this leads to not by adjusting Ce in matrix3+And Eu3+Doping concentration adjusts Ce3+And Eu3+
Luminous peak intensity, realize tunable luminous.
The present invention provides a kind of tunable luminescence rare earth ion doping Mg2Al4Si5O18Fluorescent material and preparation method thereof.
The content of the invention
It is contemplated that by ionic bridge, rare earth ion doped cordierite structure Mg is realized2Al4Si5O18Fluorescent material can
Tuning is luminous, doping with rare-earth ions Ce3+, Tb3+And Eu3+Three kinds.
A kind of tunable luminescence rare earth ion doping Mg2Al4Si5O18Fluorescent material, the chemical general formula of the fluorescent material are
(Mg1-x-y-zCexTbyEuz)2Al4Si5O18, x, y, z is molar fraction, and its scope is respectively 0 ＜ x≤0.1,0 ＜ y≤0.4,0
＜ z≤0.1；
Its specific preparation method is：
1. according to stoichiometric proportion, compound containing Mg, compound containing Al, compound containing Si, compound containing Ce, containing Tb are weighed respectively
Compound and compound containing Eu, and be well mixed, obtain mixture；
2. the mixture of gained in step 1 is sintered under reducing atmosphere, sintering temperature is 1200-1500 DEG C, sintering time
For 2-24 hours, ground after sintered product natural cooling, that is, obtain Ce3+, Tb3+And Eu3+Codope Mg2Al4Si5O18Phosphor
Material.
In the present invention, compound containing Mg described in step 1 be the oxide containing corresponding ion, hydroxide, carbonate,
The one or more of nitrate and halide；The compound containing Al is the oxide containing corresponding ion, hydroxide, nitric acid
The one or more of salt and halide；The compound containing Si is inorganic silicon compound and organo-silicon compound；It is described to contain Ceization
Compound is the one or more of the oxide containing corresponding ion, carbonate, nitrate and halide；The compound containing Tb is
The one or more of oxide, carbonate, nitrate and halide containing corresponding ion；The compound containing Eu is to contain phase
Answer the one or more of the oxide of ion, carbonate, nitrate and halide；
Reducing atmosphere N described in step 22/H2, N2One or more in/CO, N/C powder.
Preferably, the x in the present invention described in step 1:y:z=0.05:0.20:0.05, the fluorescence prepared using this ratio
Material white light has relatively low color temperature value and higher colour rendering index, is similar to natural light.
Beneficial effects of the present invention：
In the present invention, pass through Tb3+Bridge linking effect, realize in Mg2Al4Si5O18Ce in matrix3+And Eu3+Between energy turn
Move. Ce3+, Tb3+, Eu3+In Mg2Al4Si5O18In photoluminescence spectrum be located at blue and green light and red light region respectively, pass through control
The doping concentration of different rare earth ions processed, Ce → Tb → Eu energy transfer efficiency is adjusted, realizes blue, green, red three kinds of coloured light
Intensity it is tunable.By controlling the intensity of its different color light, the performances such as the colour temperature and development index of its Integral luminous are can adjust.
In Mg2Al4Si5O18:Ce3+/Tb3+/Eu3+In single-phase fluorescent material system, obtain by three kinds of coloured light of blue and green light and feux rouges into
Subassembly and the white light formed, the white light have relatively low color temperature value and higher colour rendering index.
Brief description of the drawings
Fig. 1 is Tb3+Ce is realized as ionic bridge3+To Eu3+The mechanism figure of energy transfer；
Fig. 2 is (Mg prepared by embodiment 10.85Ce0.05Tb0.05Eu0.05)2Al4Si5O18The photoluminescence emission figure of fluorescent material
Spectrum；
Fig. 3 is (Mg prepared by embodiment 20.80Ce0.05Tb0.10Eu0.05)2Al4Si5O18The photoluminescence emission figure of fluorescent material
Spectrum；
Fig. 4 is (Mg prepared by embodiment 30.70Ce0.05Tb0.20Eu0.05)2Al4Si5O18The photoluminescence emission figure of fluorescent material
Spectrum；
Fig. 5 is (Mg prepared by embodiment 40.60Ce0.05Tb0.30Eu0.05)2Al4Si5O18The photoluminescence emission figure of fluorescent material
Spectrum；
Fig. 6 is (Mg prepared by embodiment 50.50Ce0.05Tb0.40Eu0.05)2Al4Si5O18The photoluminescence emission figure of fluorescent material
Spectrum；
Fig. 7 is the CIE chromaticity coordinates figures of light produced by fluorescent material prepared by embodiment 1- examples 5 is stimulated.
Embodiment
Embodiment 1
A kind of tunable luminescence rare earth ion doping Mg2Al4Si5O18Fluorescent material, the chemical general formula of the fluorescent material are
(Mg1-x-y-zCexTbyEuz)2Al4Si5O18, x, y, z is molar fraction, and its numerical value is specially x=0.05, y=0.05, z=0.05；
Its specific preparation method is：Stoichiometrically weigh MgO：6.85 grams, Al2O3：14.27 gram, SiO2：21.03
Gram, CeO2：1.72 grams, Tb4O7：1.87 grams, Eu2O3：1.76 grams, ground in agate mortar, then by well mixed original
Material is added in corundum crucible, in 95%N2/5%H2Reducing atmosphere under, sintered 20 hours at 1200 DEG C, after natural cooling,
Product is ground in agate mortar, that is, obtains (Mg0.85Ce0.05Tb0.05Eu0.05)2Al4Si5O18Fluorescent material.Fig. 2 is this reality
Apply the photoluminescence emission collection of illustrative plates of example, 1 is that the CIE colors of light produced by fluorescent material prepared by the present embodiment is stimulated are sat in Fig. 7
Mark.
Embodiment 2
Embodiment 2
A kind of tunable luminescence rare earth ion doping Mg2Al4Si5O18Fluorescent material, the chemical general formula of the fluorescent material are
(Mg1-x-y-zCexTbyEuz)2Al4Si5O18, x, y, z is molar fraction, and its numerical value is specially x=0.05, y=0.10, z=0.05；
Its specific preparation method is：Stoichiometrically weigh MgO：6.45 grams, Al2O3：14.27 gram, SiO2：21.03
Gram, CeO2：1.72 grams, Tb4O7：3.74 grams, Eu2O3：1.76 grams, ground in agate mortar, then by well mixed original
Material is added in corundum crucible, in 95%N2/5%H2Reducing atmosphere under, sintered 2 hours at 1500 DEG C, after natural cooling,
Product is ground in agate mortar, that is, obtains (Mg0.80Ce0.05Tb0.10Eu0.05)2Al4Si5O18Fluorescent material.Fig. 3 is this reality
Apply the photoluminescence emission collection of illustrative plates of example, 2 be that the CIE colors of light produced by fluorescent material prepared by the present embodiment is stimulated are sat in Fig. 7
Mark.
Embodiment 3
A kind of tunable luminescence rare earth ion doping Mg2Al4Si5O18Fluorescent material, the chemical general formula of the fluorescent material are
(Mg1-x-y-zCexTbyEuz)2Al4Si5O18, x, y, z is molar fraction, and its numerical value is specially x=0.05, y=0.20, z=0.05；
Its specific preparation method is：Stoichiometrically weigh MgO：5.64 grams, Al2O3：14.27 gram, SiO2：21.03
Gram, CeO2：1.72 grams, Tb4O7：7.48 grams, Eu2O3：1.76 grams, ground in agate mortar, then by well mixed original
Material is added in corundum crucible, in 95%N2/5%H2Reducing atmosphere under, sintered 6 hours at 1400 DEG C.After natural cooling,
Product is ground in agate mortar, that is, obtains (Mg0.70Ce0.05Tb0.20Eu0.05)2Al4Si5O18Fluorescent material.Fig. 4 is this reality
Apply the photoluminescence emission collection of illustrative plates of example, 3 be that the CIE colors of light produced by fluorescent material prepared by the present embodiment is stimulated are sat in Fig. 7
Mark.
Embodiment 4
A kind of tunable luminescence rare earth ion doping Mg2Al4Si5O18Fluorescent material, the chemical general formula of the fluorescent material are
(Mg1-x-y-zCexTbyEuz)2Al4Si5O18, x, y, z is molar fraction, and its numerical value is specially x=0.05, y=0.30, z=0.05；
Its specific preparation method is：Stoichiometrically weigh MgO：4.84 grams, Al2O3：14.27 gram, SiO2：21.03
Gram, CeO2：1.72 grams, Tb4O7：11.22 gram, Eu2O3：1.76 grams, ground in agate mortar, then by well mixed original
Material is added in corundum crucible, in 95%N2/5%H2Reducing atmosphere under, sintered 8 hours at 1300 DEG C, after natural cooling,
Product is ground in agate mortar, that is, obtains (Mg0.60Ce0.05Tb0.30Eu0.05)2Al4Si5O18Fluorescent material.Fig. 5 is this reality
Apply the photoluminescence emission collection of illustrative plates of example, 4 be that the CIE colors of light produced by fluorescent material prepared by the present embodiment is stimulated are sat in Fig. 7
Mark.
Embodiment 5
A kind of tunable luminescence rare earth ion doping Mg2Al4Si5O18Fluorescent material, the chemical general formula of the fluorescent material are
(Mg1-x-y-zCexTbyEuz)2Al4Si5O18, x, y, z is molar fraction, and its numerical value is specially x=0.05, y=0.40, z=0.05；
Its specific preparation method is：Stoichiometrically weigh MgO：4.03 grams, Al2O3：14.27 gram, SiO2：21.03
Gram, CeO2：1.72 grams, Tb4O7：14.96 gram, Eu2O3：1.76 grams, ground in agate mortar, then by well mixed original
Material is added in corundum crucible, in 95%N2/5%H2Reducing atmosphere under, sintered 4 hours at 1400 DEG C, after natural cooling,
Product is ground in agate mortar, that is, obtains (Mg0.50Ce0.05Tb0.40Eu0.05)2Al4Si5O18Fluorescent material.Fig. 6 is this reality
Apply the photoluminescence emission collection of illustrative plates of example, 5 be that the CIE colors of light produced by fluorescent material prepared by the present embodiment is stimulated are sat in Fig. 7
Mark.
Embodiment 6
A kind of tunable luminescence rare earth ion doping Mg2Al4Si5O18Fluorescent material, the chemical general formula of the fluorescent material are
(Mg1-x-y-zCexTbyEuz)2Al4Si5O18, x, y, z is molar fraction, and its numerical value is specially x=0.04, y=0.20, z=0.05；
Its specific preparation method is：Stoichiometrically weigh MgO：5.72 grams, Al2O3：14.27 gram, SiO2：21.03
Gram, CeO2：1.38 grams, Tb4O7：7.48 grams, Eu2O3：1.76 grams, ground in agate mortar, then by well mixed original
Material is added in corundum crucible, in 95%N2/5%H2Reducing atmosphere under, sintered 10 hours at 1250 DEG C, after natural cooling,
Product is ground in agate mortar, that is, obtains (Mg0.71Ce0.04Tb0.20Eu0.05)2Al4Si5O18Fluorescent material.
Embodiment 7
A kind of tunable luminescence rare earth ion doping Mg2Al4Si5O18Fluorescent material, the chemical general formula of the fluorescent material are
(Mg1-x-y-zCexTbyEuz)2Al4Si5O18, x, y, z is molar fraction, and its numerical value is specially x=0.03, y=0.20, z=0.04；
Its specific preparation method is：Stoichiometrically weigh MgO：5.88 grams, Al2O3：14.27 gram, SiO2：21.03
Gram, CeO2：1.04 grams, Tb4O7：7.48 grams, Eu2O3：1.41 grams, ground in agate mortar, then by well mixed original
Material is added in corundum crucible, in 95%N2/5%H2Reducing atmosphere under, sintered 12 hours at 1450 DEG C.After natural cooling,
Product is ground in agate mortar, that is, obtains (Mg0.73Ce0.03Tb0.20Eu0.04)2Al4Si5O18Fluorescent material.
Embodiment 8
A kind of tunable luminescence rare earth ion doping Mg2Al4Si5O18Fluorescent material, the chemical general formula of the fluorescent material are
(Mg1-x-y-zCexTbyEuz)2Al4Si5O18, x, y, z is molar fraction, and its numerical value is specially x=0.05, y=0.20, z=0.05；
Its specific preparation method is：Stoichiometrically weigh MgCO3：13.49 gram, Al2O3：14.27 gram, SiO2：
21.03 gram, CeO2：1.72 grams, Tb4O7：7.48 grams, Eu2O3：1.76 grams, ground in agate mortar, then will be well mixed
Raw material be added in corundum crucible, in 95%N2/5%H2Reducing atmosphere under, sintered 6 hours at 1400 DEG C.Treat natural cooling
Afterwards, product is ground in agate mortar, that is, obtains (Mg0.70Ce0.05Tb0.20Eu0.05)2Al4Si5O18Fluorescent material.
Claims (5)
- A kind of 1. tunable luminescence rare earth ion doping Mg2Al4Si5O18Fluorescent material, it is characterised in that the change of the fluorescent material Formula is (Mg1-x-y-zCexTbyEuz)2Al4Si5O18, the x, y, z is molar fraction, and its scope is respectively 0 ＜ x≤0.1,0 ＜ y≤0.4,0 ＜ z≤0.1.
- 2. tunable luminescence rare earth ion doping Mg according to claim 12Al4Si5O18Fluorescent material, it is characterised in that：Institute The x stated:y:z=0.05:0.20:0.05.
- A kind of 3. tunable luminescence rare earth ion doping Mg described in claim 22Al4Si5O18The preparation method of fluorescent material, its It is characterised by：Comprise the following steps：1）According to stoichiometric proportion, compound containing Mg is weighed respectively, compound containing Al, compound containing Si, compound containing Ce, is contained Tb compounds and compound containing Eu, and be well mixed, obtain mixture；2）The mixture of gained in step 1 is sintered under reducing atmosphere, sintering temperature is 1200-1500 DEG C, sintering time For 2-24 hours, ground after sintered product natural cooling, that is, obtain Ce3+, Tb3+And Eu3+Codope Mg2Al4Si5O18Phosphor Material.
- 4. tunable luminescence rare earth ion doping Mg according to claim 32Al4Si5O18The preparation method of fluorescent material, its It is characterised by：Compound containing Mg described in step 1 be the oxide containing corresponding ion, hydroxide, carbonate, nitrate and The one or more of halide；The compound containing Al is the oxide containing corresponding ion, hydroxide, nitrate and halogenation The one or more of thing；The compound containing Si is inorganic silicon compound and organo-silicon compound；The compound containing Ce be containing There are the one or more of the oxide of corresponding ion, carbonate, nitrate and halide；The compound containing Tb is containing corresponding The oxide of ion, carbonate, the one or more of nitrate and halide；The compound containing Eu is to contain corresponding ion Oxide, carbonate, the one or more of nitrate and halide.
- 5. tunable luminescence rare earth ion doping Mg according to claim 32Al4Si5O18The preparation method of fluorescent material, its It is characterised by：Reducing atmosphere N described in step 22/H2, N2One or more in/CO, N/C powder.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711158145.4A CN107746709A (en) | 2017-11-20 | 2017-11-20 | A kind of tunable luminescence rare earth ion doping Mg2Al4Si5O18Fluorescent material and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711158145.4A CN107746709A (en) | 2017-11-20 | 2017-11-20 | A kind of tunable luminescence rare earth ion doping Mg2Al4Si5O18Fluorescent material and preparation method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107746709A true CN107746709A (en) | 2018-03-02 |
Family
ID=61250717
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711158145.4A Pending CN107746709A (en) | 2017-11-20 | 2017-11-20 | A kind of tunable luminescence rare earth ion doping Mg2Al4Si5O18Fluorescent material and preparation method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107746709A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112194376A (en) * | 2020-09-29 | 2021-01-08 | 华南理工大学 | Red light emitting glass ceramic, preparation method thereof and LED/LD light emitting device |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105778913A (en) * | 2016-04-07 | 2016-07-20 | 中山大学 | Single-matrix triple-doped white fluorescent material and preparation method and application thereof |
| CN106833642A (en) * | 2017-01-05 | 2017-06-13 | 中山大学 | A kind of polyion activation single-matrix white fluorescent material being applied in WLED devices and preparation method thereof |
-
2017
- 2017-11-20 CN CN201711158145.4A patent/CN107746709A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105778913A (en) * | 2016-04-07 | 2016-07-20 | 中山大学 | Single-matrix triple-doped white fluorescent material and preparation method and application thereof |
| CN106833642A (en) * | 2017-01-05 | 2017-06-13 | 中山大学 | A kind of polyion activation single-matrix white fluorescent material being applied in WLED devices and preparation method thereof |
Non-Patent Citations (2)
| Title |
|---|
| JIAN CHEN ET AL.: "A New Blue-Emitting Mg2Al4Si5O18:Ce3+ Phosphor for White Light Emitting Diodes", 《JOURNAL OF NANOSCIENCE AND NANOTECHNOLOGY》 * |
| WANRONG WANG ET AL.: "Tunable luminescence and energy transfer propertites of MgY4SiO13:Ce3+, Tb3+, Eu3+ phosphor", 《CERAMICS INTERNATIONAL》 * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112194376A (en) * | 2020-09-29 | 2021-01-08 | 华南理工大学 | Red light emitting glass ceramic, preparation method thereof and LED/LD light emitting device |
| CN112194376B (en) * | 2020-09-29 | 2021-12-21 | 华南理工大学 | Red light emitting glass ceramic, preparation method thereof and LED/LD light emitting device |
| WO2022068144A1 (en) * | 2020-09-29 | 2022-04-07 | 华南理工大学 | Red light emitting glass-ceramic, manufacturing method therefor, and led/ld light emitting device |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| TWI363793B (en) | ||
| Tiwari et al. | Tunable lanthanide/transition metal ion‐doped novel phosphors for possible application in w‐LEDs: a review | |
| CN104877675B (en) | A kind of mixed valence europium ion-doped single-matrix Color tunable fluorescent material and preparation method thereof | |
| CN101921589A (en) | Niobate or tantalite fluorescent material used for white light LED and preparation method thereof | |
| Yongqing et al. | Properties of red-emitting phosphors Sr2MgSi2O7: Eu3+ prepared by gel-combustion method assisted by microwave | |
| CN115368893B (en) | Sodium gadolinium gallium germanium garnet Dan Jiqing light fluorescent powder and preparation method thereof | |
| CN104403668B (en) | Silicate green fluorescent powder and preparation method thereof | |
| CN103740370A (en) | Apatite-structure fluorescent powder capable of exciting blue green light and preparation method thereof | |
| CN107722982A (en) | Silicon substrate nitrogen oxides hanced cyan fluorescent powder of Fluorescence Increasing and preparation method thereof | |
| CN106590646A (en) | Near-UV excitation blue light fluorescent powder used for white light LED and preparation method thereof | |
| CN102286281B (en) | Aluminate-based red fluorescent material and preparation method thereof | |
| CN107987828A (en) | A kind of mayenite structure fluorescent powder of LED white light emissions | |
| CN105623660B (en) | The warm white fluorescent material that a kind of ultraviolet LED excites | |
| CN107746709A (en) | A kind of tunable luminescence rare earth ion doping Mg2Al4Si5O18Fluorescent material and preparation method thereof | |
| CN108276998B (en) | Trivalent samarium ion doped barium gadolinium titanate red fluorescent powder and preparation method thereof | |
| CN107163943B (en) | Spectrum-adjustable fluorescent powder suitable for near ultraviolet excitation and preparation method thereof | |
| CN106367062B (en) | White light LEDs full spectrum fluorescent powder and preparation method thereof and White LED light-emitting device | |
| US7758775B2 (en) | Green-emitting phosphors and process for producing the same | |
| CN106978174A (en) | A kind of tungsten boric acid lanthanum fluorescent material of doping and preparation method and application | |
| CN110373186A (en) | A kind of red fluorescence powder and preparation method thereof without rare earth | |
| CN105586034B (en) | Near ultraviolet excitated photochromic adjustable fluorescent material of single-matrix and preparation method thereof | |
| Zhou et al. | Ce3+ luminescence, near-UV excitation enhancement of Tb3+ emission via energy transfer in Y4Zn4 (SiO4) 5: Ce3+, Tb3+ phosphor for white LED application | |
| CN115261017B (en) | Blue light luminescent material capable of being excited by purple light and preparation method thereof | |
| CN108441213A (en) | A kind of red fluorescence powder and preparation method thereof | |
| CN102899042A (en) | Pr, Eu/Tb co-doped tungstate/molybdate fluorescent powder and preparation method thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20180302 |
|
| WD01 | Invention patent application deemed withdrawn after publication |