CN103173225B - Blue fluosilicate fluorescent powder as well as preparation method and application - Google Patents
Blue fluosilicate fluorescent powder as well as preparation method and application Download PDFInfo
- Publication number
- CN103173225B CN103173225B CN201310114889.1A CN201310114889A CN103173225B CN 103173225 B CN103173225 B CN 103173225B CN 201310114889 A CN201310114889 A CN 201310114889A CN 103173225 B CN103173225 B CN 103173225B
- Authority
- CN
- China
- Prior art keywords
- fluorescent powder
- preparation
- silicofluoride
- blue
- 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.)
- Active
Links
Abstract
The invention discloses a blue fluosilicate fluorescent powder as well as a preparation method and application thereof, belonging to the technical field of an inorganic luminescent material. The chemical formula of the fluorescent powder is Ca[2-2x]Eu2xNaSi4O10F, wherein x is larger than 0.0001 and smaller than or equal to 0.25, and the fluorescent powder is prepared by adopting high temperature solid state method. The fluorescent powder transmits blue fluorescence with a central wavelength close to 450 nm under excitation of ultraviolet light with a wavelength of 350-420 nm, and has high luminescent intensity and good stability; by excitation of near ultraviolet light, the wavelength of the fluorescent powder is highly engaged with the transmission wavelength of a near ultraviolet semiconductor chip, so the fluorescent powder can be used as fluorescent powder for white light LED excited by near ultraviolet light. Moreover, the fluorescent powder contains alkaline-earth metals and rare-earth metals as main positive ions, is simple in sintering process and has good reproducibility; the product obtained has stable quality; and the preparation method is beneficial to operation and industrial production.
Description
Technical field
The present invention relates to a kind of fluorescent material and preparation method thereof, be particularly useful for high-brightness blue silicofluoride fluorescent material of LED and preparation method thereof, belong to rare earth luminescent material technical field.
Background technology
Along with global energy worsening shortages and environmental stress increase day by day, energy-conserving and environment-protective become the current important topic facing, and in general lighting field, white light LEDs product is just attracting increasing concern.White light LEDs is as novel green illuminating product, has that photoelectric efficiency is high, the life-span is long, volume is little, power is low, an advantage such as solid-state energy-conservation and environmental protection, is generally acknowledged novel illumination light source, must become following development trend.21st century is by the novel illumination light source epoch that enter taking LED as representative.Fluorescent material is as the important component part of white light LEDs, has great importance for improving the performance index such as the luminous efficiency, work-ing life, colour temperature, colour rendering index of such LED.
At present, the approach that realizes of White-light LED illumination mainly contains three kinds: the combined and volume subtype of light conversion hysteria, polychrome.Wherein, adopting the light transformation approach of the luminous formation mixed white light of LED excitated fluorescent powder LED is current mainstream technology, and reported luminous efficiency white light LEDs product the highest and that commercially produced is all based on this method.Business-like white light LEDs is that the blue light (approximately 450 nanometer) that Japanese Nichia company uses GaN base LED chip to send carrys out excitation rare-earth fluorescent material YAG (Y the earliest
3al
5o
12): Ce
3+yellow light-emitting low temperature, thus white light formed.But, because of shortcomings such as it lack red light portion radiation, and product exists colour rendering index low, and color reducibility is poor, be restricted in widespread adoption and the popularization of high-end lighting field.The emission wavelength of current I nGaN chip blue shift, near ultraviolet region, can provide higher excitation energy for fluorescent material.The combination of ultraviolet or near ultraviolet LED and three primary colors fluorescent powder, its color developing is best, and fluorescent material luminous efficiency is lower.Therefore development of new redness, green and blue colour fluorescent powder efficient, Heat stability is good is the key that improves white light LEDs luminous mass.
At present, can be used for the blue colour fluorescent powder of near ultraviolet (350～420 nanometer) type white light LEDs (NUV-LED) use also few.Wherein, studying more is aluminate base blue colour fluorescent powder, mainly taking high temperature solid-state method as main.As Chinese invention patent CN1415695A discloses the preparation method of the blue aluminate fluorescent powder that a kind of vacuum ultraviolet rays activates.That the method has is easy and simple to handle, technique simple, low cost and other advantages, but thing is assorted and particle is thick mutually, and pattern is irregular, and follow-up disintegrating process can cause declining to a great extent of light-emitting phosphor performance and use properties; Chinese invention patent CN1190115A discloses BaMgAl
14o
23: the preparation method of Eu blue colour fluorescent powder, this patent is that carbon dust is directly covered on starting material, this preparation method, because carbon dust is directly to contact with starting material, causes fluorescent material part Prevent Carbon Contamination, thereby causes the waste of starting material in preparation process.Therefore, this preparation method can not meet the needs of actual production well.But, silicate has good chemical stability and thermostability as inorganic fluorescent material, raw material is cheap, also be the fluorescence synthetic materials with high-luminous-efficiency simultaneously, and there are higher crystallinity and visible light permeability, it is a kind of better luminescent material, can be applied in preferably in the fluorescent material that near ultraviolet type white light LEDs uses, as Chinese invention patent CN102703066A discloses a kind of silicofluoride fluorescent material and preparation method thereof, this fluorescent material is rare-earth ion activated lithium fluosilicate calcium fluorescent material, and its chemical expression is Ca
2-xliSiO
4f:xR
2+, 0<x<0.1, R
2+for Eu
2+; Or be Ca
2-2xliSiO
4f:x (R
3++ Li
+), 0<x<0.5, R
3+for Eu
3+, Sm
3+, Tb
3+, Dy
3+, Ce
3+in one.The silicate blue fluorescent powder of this invention can be excited by 250～350 nano-ultraviolet lights, sends the blue colour fluorescent powder of efficient main emission peak in 460 nanometer range.But such fluorescent material need to be at H
2+ N
2among reducing atmosphere, synthesize H in building-up process
2+ N
2can not be penetrated into for a full due among synthetic fluorescent material powder Deng reducing gas, make the active ions of fluorescent material can not be reduced to fully Ce
3+, badly influence the luminous of fluorescent material; Also due to H
2+ N
2reducing gas has danger, and misoperation can set off an explosion, and therefore, its production has been subject to certain restriction.
Silicate systems fluorescent material is except the good warm and chemical stability advantage of matrix, also there are raw material sources abundant simultaneously, the advantages such as synthesis technique adaptability is extensive, find the high sapphirine silicate systems fluorescent material effectively being excited near ultraviolet 350-420 nano waveband, be expected to be used in white light LEDs field.
Summary of the invention
The deficiency existing in order to overcome prior art, the object of this invention is to provide one can be excited by ultraviolet leds, there is good luminous characteristic and physical and chemical performance, silicofluoride blue colour fluorescent powder for LED that manufacturing process is simple, pollution-free, cost is low and preparation method thereof, to overcome deficiency of the prior art.
For reaching above object, the technical solution used in the present invention is: a kind of silicofluoride blue colour fluorescent powder is provided, and its chemical formula is Ca
2-2xeu
2xnaSi
4o
10f, wherein 0.0001 < x≤0.25; Be under the ultraviolet excitation of 350～420 nanometers at wavelength, launch the blue-fluorescence that main wavelength is 450～475 nanometers.
Prepare a silicofluoride blue colour fluorescent powder method as above, adopt high temperature solid-state method, comprise the following steps:
(1) to contain calcium ion Ca
2+compound, contain sodium ion Na
+compound, contain silicon ion Si
4+compound, europium ion Eu
3+for raw material, by molecular formula Ca
2-2xeu
2xnaSi
4o
10in F (wherein 0.0001 < x≤0.25), the stoichiometric ratio of corresponding element takes each raw material; The raw material taking is ground respectively, and remix is even, obtains mixture;
(2) other mixtures except fluorochemical are calcined under air atmosphere, calcining temperature is 100～500 DEG C, and calcination time is 1～10 hour;
(3) by the mixture naturally cooling after calcining, grind and mix, sintering (described reducing atmosphere is active carbon granule reducing atmosphere) in the atmosphere of reduction, calcining temperature is 600～1000 DEG C, calcination time is 2～8 hours;
(4) by the mixture naturally cooling after calcining; add fluorochemical to grind and mix; sintering (described reducing atmosphere is active carbon granule reducing atmosphere) in the atmosphere of reduction; calcining temperature is 800～1200 DEG C; calcination time is 2～10 hours, obtains a kind of silicofluoride blue colour fluorescent powder.
When the present invention adopts high temperature solid-state method, the described calcining temperature of step (2) is 300～500 DEG C, and calcination time is 3～8 hours; The described calcining temperature of step (3) is 700～1000 DEG C, and calcination time is 4～7 hours; The described calcining temperature of step (4) is 1000～1200 DEG C, and calcination time is 5～10 hours.
The calcium ion Ca that contains of the present invention
2+compound comprise the one in calcium oxide, calcium carbonate; Contain sodium ion Na
+compound comprise the one in sodium oxide, sodium carbonate; Contain silicon ion Si
4+compound be silicon-dioxide; Contain fluorion F
-compound comprise Calcium Fluoride (Fluorspan) or Calcium Fluoride (Fluorspan) and Sodium Fluoride; The described europium ion Eu that contains
3+compound oxidation europium, europium nitrate in one.
The blue colour fluorescent powder of silicofluoride provided by the invention, is coordinated appropriate redness, green emitting phosphor, applies and is packaged in outside InGaN diode, prepares white light LEDs illuminating device.
Compared with prior art, the advantage of technical solution of the present invention is:
1, the silicofluoride that prepared by the present invention has good chemical stability and thermostability, and raw material is cheap, wide material sources, and cost is lower, is also the fluorescence synthetic materials with high-luminous-efficiency simultaneously, resistance to uv irradiation.
2, the fluorescent material of this invention has very wide excitation spectrum near ultraviolet region (350-420 nanometer), can stick on indium gallium nitride near-ultraviolet light LED chip and obtain efficient blue-light-emitting, coordinate again near ultraviolet excitated redness, green emitting phosphor, can realize white luminous that near-ultraviolet light LED excites, prepare White-light LED illumination device.
3, silicofluoride blue-fluorescence powder preparation technique provided by the invention is simple, easy handling, with the comparison of aluminates system fluorescent material, synthesis temperature low (1000～1200 DEG C), thereby obviously reduce energy consumption and product cost, material preparation for the requirement of equipment well below similar fluorescent material.
4, synthesis material Sodium Fluoride used in the present invention, Calcium Fluoride (Fluorspan) all have the effect of fluxing, and reduce temperature of reaction, improve reactive behavior, have wide application prospect.Product easily collecting simultaneously, without waste water and gas discharge, environmental friendliness, is especially applicable to serialization and produces.
Brief description of the drawings
Fig. 1 is the X-ray powder diffraction collection of illustrative plates of the material sample prepared by the embodiment of the present invention 1 technical scheme;
Fig. 2 is the material sample prepared by the embodiment of the present invention 1 technical scheme luminescent spectrum figure under the optical excitation of 395 nanometers;
Fig. 3 is the exciting light spectrogram of the ultraviolet that obtains under the light detection of 450 nanometers of the material sample prepared by the embodiment of the present invention 1 technical scheme to blue region;
Fig. 4 is that the material sample of preparing by the embodiment of the present invention 1 technical scheme is 355 nanometers in excitation wavelength, and monitoring wavelength is the decay of luminescence curve of 430 nanometers.
Embodiment
Below in conjunction with drawings and Examples, technical solution of the present invention is further described.
Embodiment 1:
Preparation Ca
1.998eu
0.002naSi
4o
10f
According to chemical formula Ca
1.998eu
0.002naSi
4o
10in F, the stoichiometric ratio of each element takes respectively calcium carbonate CaCO
3: 0.999 gram, europium sesquioxide Eu
2o
3: 0.004 gram, silicon-dioxide SiO
2: 2.404 grams, after grinding in agate mortar and mixing, select air atmosphere to calcine for the first time, temperature is 500 DEG C, calcination time 3 hours, is then cooled to room temperature, takes out sample; By the raw material of calcining for the first time, fully mixed grinding is even again, the sintering that (is embedded in activated carbon powder) again in reducing atmosphere, and 700 DEG C of temperature, calcination time 7 hours, is then chilled to room temperature, takes out sample; Finally add Sodium Fluoride NaF:0.420 gram, Calcium Fluoride (Fluorspan) CaF
2: 0.281 gram, after fully being ground again, it is placed on reducing atmosphere sintering in retort furnace, and calcining temperature is 1000 DEG C, and calcination time is 10 hours, obtains powder shaped silicofluoride blue emitting material.
Referring to accompanying drawing 1, it is the X-ray powder diffraction collection of illustrative plates of the material sample prepared by the present embodiment technical scheme, and XRD test result shows, prepared material is silicofluoride Ca
2naSi
4o
10f monophase materials.
Referring to accompanying drawing 2, it is 0.1% concentration Eu
2+ion is at Ca
1.998eu
0.002naSi
4o
10in F fluorescent material, excite with near-ultraviolet light 395 nanometers the luminescent spectrum obtaining, the main center emission wavelength of this material is the blue-light-emitting wave band of approximately 450 nanometers, calculate by CIE simultaneously, the coordinate of learning it is x=0.172, y=0.161, also just in time drop on blue region, it can finely be applicable to the white light LEDs that near-ultraviolet light is excitation light source.
Referring to accompanying drawing 3, what obtain from material sample monitoring utilizing emitted light 450 nanometers to preparing by the technology of the present invention can find out the exciting light spectrogram of ultraviolet blue region, the blue-light-emitting of this material excite main near ultraviolet (NUV) region between 350～420 nanometers, source, can mate well near ultraviolet LED chip.
Referring to accompanying drawing 4, it is that the material sample of preparing by the present embodiment technical scheme is 355 nanometers at excitation wavelength, and monitoring optical wavelength is the decay of luminescence curve of 430 nanometers, and be 1.604 microseconds the fall time that can calculate this blue colour fluorescent powder from figure.
Embodiment 2:
Preparation Ca
1.98eu
0.02naSi
4o
10f
According to chemical formula Ca
1.98eu
0.02naSi
4o
10in F, the stoichiometric ratio of each element takes respectively calcium oxide CaO:0.550 gram, europium nitrate Eu (NO
3)
3: 0.068 gram, silicon-dioxide SiO
2: 2.404 grams, sodium oxide Na
2o:0.310 gram, after grinding and mixing, selects air atmosphere to calcine for the first time in agate mortar, and temperature is 300 DEG C, and calcination time 8 hours, is then cooled to room temperature, takes out sample; By the raw material of calcining for the first time, fully mixed grinding is even again, the sintering that (is embedded in activated carbon powder) again in reducing atmosphere, and 1000 DEG C of temperature, calcination time 4 hours, is then chilled to room temperature, takes out sample; Finally add Calcium Fluoride (Fluorspan) CaF
2: 0.281 gram, after fully being ground again, it is placed on reducing atmosphere sintering in retort furnace, and calcining temperature is 1200 DEG C, and calcination time is 5 hours, obtains powder shaped silicofluoride blue emitting material.Its main structure properties, excitation spectrum, luminescent spectrum and extinction curve are similar to embodiment 1.
Embodiment 3:
Preparation Ca
1.9eu
0.1naSi
4o
10f
According to chemical formula Ca
1.9eu
0.1naSi
4o
10in F, the stoichiometric ratio of each element takes respectively calcium carbonate CaCO
3: 0.901 gram, europium sesquioxide Eu
2o
3: 0.176 gram, silicon-dioxide SiO
2: 2.404 grams, after grinding in agate mortar and mixing, select air atmosphere to calcine for the first time, temperature is 400 DEG C, calcination time 6 hours, is then cooled to room temperature, takes out sample; By the raw material of calcining for the first time, fully mixed grinding is even again, the sintering that (is embedded in activated carbon powder) again in reducing atmosphere, and 800 DEG C of temperature, calcination time 5 hours, is then chilled to room temperature, takes out sample; Finally add Sodium Fluoride NaF:0.420 gram, Calcium Fluoride (Fluorspan) CaF
2: 0.281 gram, after fully being ground again, it is placed on reducing atmosphere sintering in retort furnace, and calcining temperature is 1050 DEG C, and calcination time is 9 hours, obtains powder shaped silicofluoride blue emitting material.Its main structure properties, excitation spectrum, luminescent spectrum and extinction curve are similar to embodiment 1.
Embodiment 4:
Preparation Ca
1.8eu
0.2naSi
4o
10f
According to chemical formula Ca
1.8eu
0.2naSi
4o
10in F, the stoichiometric ratio of each element takes respectively calcium carbonate CaCO
3: 0.801 gram, europium nitrate Eu (NO
3)
3: 0.677 gram, silicon-dioxide SiO
2: 2.404 grams, sodium carbonate Na
2cO
3: 0.530 gram, after grinding in agate mortar and mixing, select air atmosphere to calcine for the first time, temperature is 450 DEG C, calcination time 8 hours, is then cooled to room temperature, takes out sample; By the raw material of calcining for the first time, fully mixed grinding is even again, the sintering that (is embedded in activated carbon powder) again in reducing atmosphere, and 950 DEG C of temperature, calcination time 5 hours, is then chilled to room temperature, takes out sample; Finally add Calcium Fluoride (Fluorspan) CaF
2: 0.281 gram, after fully being ground again, it is placed on reducing atmosphere sintering in retort furnace, and calcining temperature is 1100 DEG C, and calcination time is 8 hours, obtains powder shaped silicofluoride blue emitting material.Its main structure properties, excitation spectrum, luminescent spectrum and extinction curve are similar to embodiment 1.
Embodiment 5:
Preparation Ca
1.5eu
0.5naSi
4o
10f
According to chemical formula Ca
1.5eu
0.5naSi
4o
10in F, the stoichiometric ratio of each element takes respectively calcium oxide CaO:0.281 gram, europium sesquioxide Eu
2o
3: 0.88 gram, silicon-dioxide SiO
2: 2.404 grams, after grinding in agate mortar and mixing, select air atmosphere to calcine for the first time, temperature is 500 DEG C, calcination time 4 hours, is then cooled to room temperature, takes out sample; By the raw material of calcining for the first time, fully mixed grinding is even again, the sintering that (is embedded in activated carbon powder) again in reducing atmosphere, and 900 DEG C of temperature, calcination time 6 hours, is then chilled to room temperature, takes out sample; Finally add Sodium Fluoride NaF:0.420 gram, Calcium Fluoride (Fluorspan) CaF
2: 0.281 gram, after fully being ground again, it is placed on reducing atmosphere sintering in retort furnace, and calcining temperature is 1100 DEG C, and calcination time is 7 hours, obtains powder shaped silicofluoride blue emitting material.Its main structure properties, excitation spectrum, luminescent spectrum and extinction curve are similar to embodiment 1.
Claims (5)
1. a preparation method for silicofluoride blue colour fluorescent powder, the chemical formula of described silicofluoride blue colour fluorescent powder is Ca
2-2xeu
2xnaSi
4o
10f, wherein 0.0001 < x≤0.25; Under wavelength is 350～420 nanometers near ultraviolet excitated, launch the blue-fluorescence that main wavelength is 450～475 nanometers; It is characterized in that adopting high temperature solid-state method, comprise the following steps:
(1) to contain calcium ion Ca
2+compound, contain sodium ion Na
+compound, contain silicon ion Si
4+compound, europium ion Eu
3+for raw material, by molecular formula Ca
2-2xeu
2xnaSi
4o
10in F, the stoichiometric ratio of corresponding element takes each raw material, wherein 0.0001 < x≤0.25; The raw material taking is ground respectively, and remix is even, obtains mixture;
(2) other mixtures except fluorochemical are calcined under air atmosphere, calcining temperature is 100～500 DEG C, and calcination time is 1～10 hour;
(3) by the mixture naturally cooling after calcining, grind and mix, sintering in the atmosphere of reduction, described reducing atmosphere is active carbon granule reducing atmosphere, and calcining temperature is 600～1000 DEG C, and calcination time is 2～8 hours;
(4) by the mixture naturally cooling after calcining, add fluorochemical to grind and mix, sintering in the atmosphere of reduction; described reducing atmosphere is active carbon granule reducing atmosphere; calcining temperature is 800～1200 DEG C, and calcination time is 2～10 hours, obtains a kind of silicofluoride blue colour fluorescent powder.
2. the preparation method of a kind of silicofluoride blue colour fluorescent powder according to claim 1, is characterized in that: the described calcium ion Ca that contains
2+compound comprise the one in calcium oxide, calcium carbonate; Described fluorochemical comprises Calcium Fluoride (Fluorspan) or Calcium Fluoride (Fluorspan) and Sodium Fluoride.
3. the preparation method of a kind of silicofluoride blue colour fluorescent powder according to claim 1, is characterized in that: the described sodium ion Na that contains
+compound comprise the one in sodium oxide, sodium carbonate.
4. the preparation method of a kind of silicofluoride blue colour fluorescent powder according to claim 1, is characterized in that: the described silicon ion Si that contains
4+compound be silicon-dioxide; The described europium ion Eu that contains
3+compound oxidation europium, europium nitrate in one.
5. the preparation method of a kind of silicofluoride blue colour fluorescent powder according to claim 1, is characterized in that: the described calcining temperature of step (2) is 300～500 DEG C, and calcination time is 3～8 hours; The described calcining temperature of step (3) is 700～1000 DEG C, and calcination time is 4～7 hours; The described calcining temperature of step (4) is 1000～1200 DEG C, and calcination time is 5～10 hours.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310114889.1A CN103173225B (en) | 2013-04-03 | 2013-04-03 | Blue fluosilicate fluorescent powder as well as preparation method and application |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310114889.1A CN103173225B (en) | 2013-04-03 | 2013-04-03 | Blue fluosilicate fluorescent powder as well as preparation method and application |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103173225A CN103173225A (en) | 2013-06-26 |
| CN103173225B true CN103173225B (en) | 2014-07-16 |
Family
ID=48633429
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310114889.1A Active CN103173225B (en) | 2013-04-03 | 2013-04-03 | Blue fluosilicate fluorescent powder as well as preparation method and application |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103173225B (en) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104830343B (en) * | 2015-04-21 | 2017-03-22 | 内蒙古科技大学 | Fluorine boron silicate luminescent material and its preparation method |
| CN105694886B (en) * | 2015-12-23 | 2017-12-26 | 江苏师范大学 | Eu (Eu)2+Preparation method and application of doped fluosilicate-based luminescent material |
| CN105482818B (en) * | 2015-12-23 | 2017-12-12 | 江苏师范大学 | Made of Eu2+Preparation method and application of activated blue fluoride fluorescent powder |
| CN106947472B (en) * | 2017-01-24 | 2019-06-07 | 江苏师范大学 | A kind of fluosilicic acid alkali red fluorescence ceramic material, preparation method and application |
| CN106811197B (en) * | 2017-01-24 | 2019-01-11 | 江苏师范大学 | A kind of fluosilicic acid alkali up-conversion luminescence ceramic material and preparation method thereof |
| CN107446573A (en) * | 2017-08-18 | 2017-12-08 | 苏州轻光材料科技有限公司 | A kind of UV excited white lights LED fluorescent material and preparation method thereof |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101336279A (en) * | 2005-12-02 | 2008-12-31 | 沙诺夫公司 | Metal silicate halide phosphors and led lighting devices using the same |
| CN102660263A (en) * | 2012-05-04 | 2012-09-12 | 苏州大学 | Eu<2+>-activated chorine calcium silicate salt fluorescent powder and preparation method and application thereof |
| CN102703066A (en) * | 2012-06-13 | 2012-10-03 | 中国计量学院 | Fluorosilicate fluorescent powder and preparation method thereof |
-
2013
- 2013-04-03 CN CN201310114889.1A patent/CN103173225B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101336279A (en) * | 2005-12-02 | 2008-12-31 | 沙诺夫公司 | Metal silicate halide phosphors and led lighting devices using the same |
| CN102660263A (en) * | 2012-05-04 | 2012-09-12 | 苏州大学 | Eu<2+>-activated chorine calcium silicate salt fluorescent powder and preparation method and application thereof |
| CN102703066A (en) * | 2012-06-13 | 2012-10-03 | 中国计量学院 | Fluorosilicate fluorescent powder and preparation method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103173225A (en) | 2013-06-26 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| Zhou et al. | Improved luminescence and energy-transfer properties of Ca 14 Al 10 Zn 6 O 35: Ti 4+, Mn 4+ deep-red-emitting phosphors with high brightness for light-emitting diode (LED) plant-growth lighting | |
| CN103173225B (en) | Blue fluosilicate fluorescent powder as well as preparation method and application | |
| CN103627392B (en) | A kind of stibnate base red fluorescent powder and its preparation method and application | |
| CN103242830B (en) | Fluorosilicate-based blue-green fluorescent powder as well as preparation method and applications of fluorescent powder | |
| CN105694886B (en) | Eu (Eu)2+Preparation method and application of doped fluosilicate-based luminescent material | |
| CN102373057B (en) | Silicate green fluorescent material for white-light LED (Light-Emitting-Diode) and preparation method thereof | |
| CN103254895B (en) | Aluminosilicate green fluorescent powder and preparation method thereof | |
| CN103059838B (en) | Eu<2+> activated silicate yellow fluorescent powder as well as preparation method and application thereof | |
| CN103305216B (en) | Borate red fluorescent powder and preparation method and application thereof | |
| CN103059849B (en) | Silicophosphate green fluorescent powder activated by Eu<2+> and preparation method as well as application thereof | |
| CN103468249B (en) | Eu<2+> activated sodium-calcium silicate green phosphor and preparation and application | |
| CN103396800B (en) | Boron aluminate-based blue fluorescent powder, preparation method and application | |
| CN100595258C (en) | Alkaline earth halogen silicate phosphor powder and preparation method thereof | |
| CN105670613A (en) | Non-rare-earth-ion-doped silicate yellow fluorescent powder, and preparation method and application thereof | |
| CN103468252B (en) | Silicate phosphor excited by ultraviolet light and blue light and preparation method and application thereof | |
| CN102492422A (en) | Green emitting phosphor for white-light LEDs and preparation method thereof | |
| CN104804731B (en) | Magnesium silicate potassium blue-green fluorescent powder that a kind of Eu2+ activates and its preparation method and application | |
| CN103627393B (en) | Tungsten molybdate red phosphor powder and preparation method and application thereof | |
| CN113861981A (en) | Dy (Dy)3+Activated gallate yellow fluorescent powder and preparation method and application thereof | |
| CN102585806B (en) | Green fluorescent powder suitable for excitation of near ultraviolet light and blue light and preparation method thereof | |
| CN105419798A (en) | Preparation method and application of orange-red antimonate fluorescent material | |
| CN104804742B (en) | Red fluorescent powder for white light LED and preparation method thereof | |
| CN104610969A (en) | Terbium ion doped yttrium phosphate barium green phosphor and preparation method thereof | |
| CN103497761A (en) | Eu<2+>-activated aluminum-barium fluoborate fluorescent powder as well as preparation method and application thereof | |
| CN103113891B (en) | Vanadate green emitting phosphor as well as preparation method and application thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CB03 | Change of inventor or designer information | ||
| CB03 | Change of inventor or designer information |
Inventor after: Li Changsong Inventor before: Huang Yanlin Inventor before: Tao Zhengxu Inventor before: Qin Lin Inventor before: Guan Ying Inventor before: Wei Donglei |
|
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20171115 Address after: 225600 Jiangsu Gaoyou hi tech Industrial Development Zone East West Avenue Patentee after: Yangzhou Feng Feng hi tech Industry Investment Development Group Co., Ltd. Address before: 215123 Suzhou City, Suzhou Province Industrial Park, No. love road, No. 199 Patentee before: Soochow University |