CN102337127A - Long after-glow phosphorescent material and preparation method thereof - Google Patents
Long after-glow phosphorescent material and preparation method thereof Download PDFInfo
- Publication number
- CN102337127A CN102337127A CN201110324833XA CN201110324833A CN102337127A CN 102337127 A CN102337127 A CN 102337127A CN 201110324833X A CN201110324833X A CN 201110324833XA CN 201110324833 A CN201110324833 A CN 201110324833A CN 102337127 A CN102337127 A CN 102337127A
- Authority
- CN
- China
- Prior art keywords
- preparation
- long
- long afterglow
- afterglow luminous
- room temperature
- 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
Images
Landscapes
- Luminescent Compositions (AREA)
Abstract
The invention discloses a long after-glow phosphorescent material and a preparation method thereof. The chemical formula of the long after-glow phosphorescent material is A3-x-y(PO4)2:xEu2+,yB, wherein A is one or more of alkaline earth metal ions of Ca2+, Sr2+ and Ba2+; B is one or more of Tb3+, Gd3+, Dy3+, Ce3+, Pr3+ and La3+; x is more than 0 and less than or equal to 0.3; and y is more than or equal to 0 and less than or equal to 0.3. The long after-glow phosphorescent material has stable performance, high waterproofness, moisture resistance and high-temperature resistance, and zero radioactivity and cannot harm human bodies and environment; moreover, the preparation method is simple, easy to implement, low in equipment requirement and environment-friendly.
Description
Technical field
The invention belongs to the luminescent material technical field, be specifically related to a kind of luminescent material and preparation method thereof with long-persistence luminous effect.
Background technology
Long after glow luminous material is commonly called as luminescent powder, belongs to a kind of of embedded photoluminescent material, is meant the short irradiation through light sources such as daylight and long wave ultraviolets, close light source after, still can in a very long time, continue luminous material.Long after glow luminous material is as a kind of energy storage, energy-conservation " green light source material ", in the attention that more and more receives people today of energy worsening shortages, especially use aspect low light level illumination, the demonstration very extensive.At present; The long after glow luminous material goods have radioactive paint, paint, luminous printing ink, luminescent glaze, luminescent plastics, luminous rubber, Luminous leather, fluorescent glass, luminescent ceramic, luminous ornament stone, luminous composited aluminum and plastic decking, light-emitting workmanship etc., are widely used in every field such as building decoration, communications and transportation, security against fire, instrument, subway tunnel, printing printing and dyeing, advertising board, bullion.
People's research long-afterglow material early is a sulfide material, and typical case's representative of sulfide material is an alkaline earth sulfide series, like zinc sulphide and sulfurated lime etc.The most representative is that glow color is that yellowish green ZnS:Cu series, glow color are the CaS:Eu series of redness for blue CaS:Bi series and glow color.Advantage such as glow color is various though this type material has, extinction speed is fast under the low light level; But also exist significant disadvantages;, after time low like after-glow brightness weak point, unstable chemcial property, be prone to deliquescence, resistance to deterioration is poor; Can decompose slowly when contacting, and produce the deleterious H of pungency with steam
2S or H
2Se gas can't adapt to outdoor round-the-clock commercialization purpose.Though through add radioelement, means such as material coated overcome these shortcomings; Prolonged after time; But the adding of radioelement all works the mischief to health of human body and environment, so the application of this type long-afterglow material still receives restriction significantly.
Early 1990s, a kind of new long after glow luminous material SrAl
20
4: Eu
2+, Dy
3+Be developed success, compare, advantage such as this material has the luminous efficiency height, afterglow property is good, chemicalstability good and "dead" with yellow-green colour long-after-glow light material ZnS:Cu in traditional sulfide system.Its appearance has caused that once more people to seeking the very big interest of the efficient long after glow luminous material of environment-friendly energy-saving, have promoted the research and development of long after glow luminous material, simultaneously, has also quickened the industrialization paces of long after glow luminous material.It is poor that but also there is moisture resistance in the aluminates system long-afterglow material, shortcomings such as high, luminous single, the resistance to elevated temperatures difference of high to the purity requirement of raw material in the production, sintering temperature.
Silicate systems is as another kind of new type long-persistence material; Because its chemical property is stable than aluminates system, glow color and aluminate long after glow luminous material can complementations, and the high-purity silicon dioxide raw material inexpensive, be easy to get; Sintering temperature is lower more than 100 ℃ than aluminates system; Being better than aluminate long after glow luminous material in some industry (like ceramic industry) application, be one type of extremely promising new type long-persistence material, but after-glow brightness and time also lags behind aluminate long after glow luminous material.
The long after glow luminous material that with phosphoric acid salt is matrix seldom has research to report.Chinese invention patent 03109879.7 has been reported a kind of Zn
3(PO
4): Mn
2+Type zn phosphate long after glow luminous material and preparation method thereof, Chinese invention patent 200510119082.2 provide a kind of RMg2 (PO
4)
2(R=Ca, Sr or Ba) type alkaline earth phosphate long afterglow luminous material and preparation method thereof, Chinese invention patent 200610033929.X has reported a kind of MgZn
2(PO
4)
2: xMn
2+, yM type trimagnesium phosphate zinc red long afterglow luminous material and preparation method thereof, but all do not relate to phosphoric acid salt be matrix, by rare-earth ion activated long after glow luminous material.
Summary of the invention
The object of the invention is exactly a kind of long after glow luminous material that provides for the deficiency that solves prior art; This material is matrix with phosphoric acid salt; With the divalent europium is dominant activator, is auxiliary activator with the metals ion of one or more high valence states, can launch blue-greenish colour, blueness or purple steady persistence.
Another object of the present invention provides the preparation method of above-mentioned phosphate long afterglow luminous material.
The present invention adopts following technical solution to realize above-mentioned purpose: a kind of phosphate long afterglow luminous material, it has following chemical formula and forms: A
3-x-y(PO
4)
2: xEu
2+, yB, wherein A is alkaline earth metal ion Ca
2+, Sr
2+Or Ba
2+One or more; B is Tb
3+, Gd
3+, Dy
3+, Ce
3+, Pr
3+, La
3+In one or more, and 0<x ≦ 0.3,0 ≦ y ≦ 0.3.
A kind of preparation method of phosphate long afterglow luminous material is characterized in that, includes following steps:
A, form, accurately take by weighing carbonate, oxide compound or the phosphatic raw materials of respective element by stoichiometric ratio according to described chemical formula;
B, the raw materials mix grinding of step a is even, calcining is cooled to room temperature, then with the levigate the finished product that promptly get of products therefrom.
As further specifying of such scheme, in said process step b process, raw materials mix was directly calcined 2 ~ 12 hours down in 800 ~ 1200 ℃ in reducing atmosphere after grinding evenly, was cooled to room temperature.
Press such scheme, described reducing atmosphere is nitrogen hydrogen mixeding gas or carbothermic reduction atmosphere.
In said process step b process, raw materials mix earlier 300 ~ 800 ℃ of following pre-burnings 2 ~ 6 hours, is cooled to room temperature after grinding evenly, behind the regrinding, in reducing atmosphere, calcines 2 ~ 12 hours down in 800 ~ 1200 ℃, naturally cools to room temperature.
Press such scheme, described in reducing atmosphere the preferred temperature of raw material incinerating be 950 ~ 1100 ℃.
Press such scheme, the described preferred time of raw material incinerating is 3 ~ 6 hours.
The beneficial effect that the present invention adopts above-mentioned technical solution to reach is:
(1) long after glow luminous material of the present invention is matrix with phosphoric acid salt, and the low and good stability of Tc, is easy to get at low in raw material cost, and production cost is low;
(2) long after glow luminous material stable in properties of the present invention, water-fast moisture resistance, high thermal resistance are good, "dead", can not work the mischief to human and environment;
(3) preparation method of the present invention is simple, and easy handling is low for equipment requirements, environmental friendliness.
Description of drawings
What Fig. 1 a and Fig. 1 b were respectively long after glow luminous material that the embodiment of the invention 1 provides excites (a) and emission (b) spectrum;
The decay of afterglow curve of the long after glow luminous material that Fig. 2 provides for the embodiment of the invention 1.
Embodiment
A kind of phosphate long afterglow luminous material of the present invention, it has following chemical formula and forms: A
3-x-y(PO
4)
2: xEu
2+, yB, wherein A is alkaline earth metal ion Ca
2+, Sr
2+Or Ba
2+One or more; B is Tb
3+, Gd
3+, Dy
3+, Ce
3+, Pr
3+, La
3+In one or more, and 0<x ≦ 0.3,0 ≦ y ≦ 0.3.
A kind of preparation method of phosphate long afterglow luminous material is characterized in that, includes following steps: 1) form according to aforesaid chemical formula, accurately take by weighing carbonate, oxide compound or the phosphatic raw materials of respective element by stoichiometric ratio; 2) raw materials mix of step 1) is ground evenly; Directly in reducing atmosphere, calcined 2 ~ 12 hours down, or, be cooled to room temperature earlier 300 ~ 800 ℃ of following pre-burnings 2 ~ 6 hours in 800 ~ 1200 ℃; Behind the regrinding; In reducing atmosphere, calcined 2 ~ 12 hours down, naturally cool to room temperature, then with the levigate the finished product that promptly get of products therefrom in 800 ~ 1200 ℃.
Press such scheme, the preferred temperature of described raw material incinerating is 950 ~ 1100 ℃.
Press such scheme, the described preferred time of raw material incinerating is 3 ~ 6 hours.
Press such scheme, described reducing atmosphere is nitrogen hydrogen mixeding gas or carbothermic reduction atmosphere.
Following instance is that the present invention comprises but is not limited to following instance to the further specifying of technology of the present invention.
Embodiment 1
Raw material is CaCO
3(analytical pure), (NH
4)
2HPO
4(analytical pure), Eu
2O
3(99.99%) and Gd
2O
3(99.99%), the mol ratio between them is 2.91:2:0.015:0.03, and it is even accurately to take by weighing each raw material and mixed grinding, places crucible, puts into High Temperature Furnaces Heating Apparatus, at 5%H
2/ 95%N
2Reducing atmosphere in 1100 ℃ of calcination 4 hours, naturally cool to room temperature, levigate, obtain phosphate long afterglow luminous material Ca
2.91(PO
4)
2: 0.03Eu
2+, 0.06Gd
3+, principal phase is Ca
3(PO
4)
2What Fig. 1 a and Fig. 1 b were respectively long after glow luminous material that present embodiment provides excites (a) and emission (b) spectrum; The decay of afterglow curve of the long after glow luminous material that Fig. 2 provides for present embodiment.
Embodiment 2
Raw material is SrCO
3(analytical pure), (NH
4)
2HPO
4(analytical pure), Eu
2O
3(99.99%) and Gd
2O
3(99.99%), the mol ratio between them is 2.91:2:0.015:0.03, and it is even accurately to take by weighing each raw material and mixed grinding, places crucible, puts into High Temperature Furnaces Heating Apparatus, at 5%H
2/ 95%N
2Reducing atmosphere in 1100 ℃ of calcination 4 hours, naturally cool to room temperature, levigate, obtain phosphate long afterglow luminous material Sr
2.91(PO
4)
2: 0.03Eu
2+, 0.06Gd
3+, principal phase is Sr
3(PO
4)
2
Embodiment 3
Raw material is BaCO
3(analytical pure), (NH
4)
2HPO
4(analytical pure), Eu
2O
3(99.99%) and Gd
2O
3(99.99%), the mol ratio between them is 2.91:2:0.015:0.03, and it is even accurately to take by weighing each raw material and mixed grinding, places crucible, puts into High Temperature Furnaces Heating Apparatus, at 10%H
2/ 90%N
2Reducing atmosphere in 1100 ℃ of calcination 4 hours, naturally cool to room temperature, levigate, obtain phosphate long afterglow luminous material Ba
2.91(PO
4)
2: 0.03Eu
2+, 0.06Gd
3+, principal phase is Ba
3(PO
4)
2
Embodiment 4
Raw material is CaCO
3(analytical pure), BaCO
3(analytical pure), (NH
4)
2HPO
4(analytical pure), Eu
2O
3(99.99%) and Gd
2O
3(99.99%), the mol ratio between them is 2.88:0.03:2:0.015:0.03, and it is even accurately to take by weighing each raw material and mixed grinding; Place crucible; Put into High Temperature Furnaces Heating Apparatus, in carbothermic reduction atmosphere,, naturally cool to room temperature in 1200 ℃ of calcination 4 hours; Levigate, obtain phosphate long afterglow luminous material Ca
2.88Ba
0.03(PO
4)
2: 0.03Eu
2+, 0.06Gd
3+, principal phase is Ca
3(PO
4)
2
Embodiment 5
Raw material is CaCO
3(analytical pure), SrCO
3(analytical pure), (NH
4)
2HPO
4(analytical pure), Eu
2O
3(99.99%) and Dy
2O
3(99.99%), the mol ratio between them is 2.88:0.03:2:0.015:0.03, and it is even accurately to take by weighing each raw material and mixed grinding; Place crucible; Put into High Temperature Furnaces Heating Apparatus, in the reducing atmosphere of carbon heat,, naturally cool to room temperature in 1200 ℃ of calcination 4 hours; Levigate, obtain phosphate long afterglow luminous material Ca
2.88Sr
0.03(PO
4)
2: 0.03Eu
2+, 0.06Dy
3+, principal phase is Ca
3(PO
4)
2
Embodiment 6
Raw material is CaCO
3(analytical pure), (NH
4)
2HPO
4(analytical pure), Eu
2O
3(99.99%) and Tb
4O
7(99.99%), the mol ratio between them is 2.91:2:0.015:0.015, and it is even accurately to take by weighing each raw material and mixed grinding, places crucible, puts into High Temperature Furnaces Heating Apparatus, at 5%H
2/ 95%N
2Reducing atmosphere in 900 ℃ of calcination 10 hours, naturally cool to room temperature, levigate, obtain phosphate long afterglow luminous material Ca
2.91(PO
4)
2: 0.03Eu
2+, 0.06Tb
3+, principal phase is Ca
3(PO
4)
2
Embodiment 7
Raw material is CaCO
3(analytical pure), (NH
4)
2HPO
4(analytical pure), Eu
2O
3(99.99%) and CeO
2(99.99%), the mol ratio between them is 2.91:2:0.015:0.06, and it is even accurately to take by weighing each raw material and mixed grinding, places crucible, puts into High Temperature Furnaces Heating Apparatus, at 5%H
2/ 95%N
2Reducing atmosphere in 1100 ℃ of calcination 4 hours, naturally cool to room temperature, levigate, obtain phosphate long afterglow luminous material Ca
2.91(PO
4)
2: 0.03Eu
2+, 0.06Ce
3+, principal phase is Ca
3(PO
4)
2
Embodiment 8
Raw material is CaCO
3(analytical pure), (NH
4)
2HPO
4(analytical pure), Eu
2O
3(99.99%) and Pr
6O
11(99.99%), the mol ratio between them is 2.91:2:0.015:0.01, and it is even accurately to take by weighing each raw material and mixed grinding, places crucible, puts into High Temperature Furnaces Heating Apparatus, at 5%H
2/ 95%N
2Reducing atmosphere in 1100 ℃ of calcination 4 hours, naturally cool to room temperature, levigate, obtain phosphate long afterglow luminous material Ca
2.91(PO
4)
2: 0.03Eu
2+, 0.06Pr
3+, principal phase is Ca
3(PO
4)
2
Embodiment 9
Raw material is CaCO
3(analytical pure), (NH
4)
2HPO
4(analytical pure), Eu
2O
3(99.99%) and La
2O
3(99.99%), the mol ratio between them is 2.91:2:0.015:0.03, and it is even accurately to take by weighing each raw material and mixed grinding, places crucible, puts into High Temperature Furnaces Heating Apparatus, at 5%H
2/ 95%N
2Reducing atmosphere in 1000 ℃ of calcination 6 hours, naturally cool to room temperature, levigate, obtain phosphate long afterglow luminous material Ca
2.91(PO
4)
2: 0.03Eu
2+, 0.06La
3+, principal phase is Ca
3(PO
4)
2
Embodiment 10
Raw material is CaCO
3(analytical pure), (NH
4)
2HPO
4(analytical pure), Eu
2O
3(99.99%), Gd
2O
3(99.99%) and Tb
4O
7(99.99%), the mol ratio between them is 2.91:2:0.015:0.015:0.0075, and it is even accurately to take by weighing each raw material and mixed grinding, places crucible, puts into High Temperature Furnaces Heating Apparatus, at 5%H
2/ 95%N
2Reducing atmosphere in 1100 ℃ of calcination 4 hours, naturally cool to room temperature, levigate, obtain phosphate long afterglow luminous material Ca
2.91(PO
4)
2: 0.03Eu
2+, 0.03Gd
3+, 0.03Tb
3+, principal phase is Ca
3(PO
4)
2
Above-described only is preferred implementation of the present invention, should be pointed out that for the person of ordinary skill of the art, under the prerequisite that does not break away from the invention design, can also make some distortion and improvement, and these all belong to protection scope of the present invention.
Claims (7)
1. phosphate long afterglow luminous material, it has following chemical formula and forms: A
3-x-y(PO
4)
2: xEu
2+, yB, wherein A is alkaline earth metal ion Ca
2+, Sr
2+Or Ba
2+One or more; B is Tb
3+, Gd
3+, Dy
3+, Ce
3+, Pr
3+, La
3+In one or more, and 0<x ≦ 0.3,0 ≦ y ≦ 0.3.
2. the preparation method of the described phosphate long afterglow luminous material of claim 1 is characterized in that, includes following steps:
A, form, accurately take by weighing carbonate, oxide compound or the phosphatic raw materials of respective element by stoichiometric ratio according to described chemical formula;
B, the raw materials mix grinding of step a is even, calcining is cooled to room temperature, then with the levigate the finished product that promptly get of products therefrom.
3. the preparation method of phosphate long afterglow luminous material according to claim 2 is characterized in that, in said process step b process, raw materials mix was directly calcined 2 ~ 12 hours down in 800 ~ 1200 ℃ in reducing atmosphere after grinding evenly, was cooled to room temperature.
4. the preparation method of phosphate long afterglow luminous material according to claim 2 is characterized in that, in said process step b process; After raw materials mix is ground evenly; 300 ~ 800 ℃ of following pre-burnings 2 ~ 6 hours, be cooled to room temperature, behind the regrinding earlier; In reducing atmosphere, calcined 2 ~ 12 hours down, naturally cool to room temperature in 800 ~ 1200 ℃.
5. according to the preparation method of claim 3 or 4 described phosphate long afterglow luminous materials, it is characterized in that, press such scheme, described reducing atmosphere is nitrogen hydrogen mixeding gas or carbothermic reduction atmosphere.
6. according to the preparation method of claim 3 or 4 described phosphate long afterglow luminous materials, it is characterized in that, press such scheme, described in reducing atmosphere the preferred temperature of raw material incinerating be 950 ~ 1100 ℃.
7. according to the preparation method of claim 3 or 4 described phosphate long afterglow luminous materials, it is characterized in that, press such scheme, the described preferred time of raw material incinerating is 3 ~ 6 hours.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110324833XA CN102337127A (en) | 2011-10-24 | 2011-10-24 | Long after-glow phosphorescent material and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110324833XA CN102337127A (en) | 2011-10-24 | 2011-10-24 | Long after-glow phosphorescent material and preparation method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102337127A true CN102337127A (en) | 2012-02-01 |
Family
ID=45513084
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201110324833XA Pending CN102337127A (en) | 2011-10-24 | 2011-10-24 | Long after-glow phosphorescent material and preparation method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102337127A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103835465A (en) * | 2014-03-03 | 2014-06-04 | 范新晖 | Long-afterglow fluorescent ceramic tile |
| CN105969350A (en) * | 2016-06-03 | 2016-09-28 | 闽南师范大学 | Blue-green long-afterglow luminescent material and preparation method thereof |
| CN108485667A (en) * | 2018-03-28 | 2018-09-04 | 青岛科技大学 | A kind of novel luminescent color is adjustable to fluorescent powder of white light and preparation method thereof |
| CN113620599A (en) * | 2021-06-15 | 2021-11-09 | 福建江夏学院 | Novel long-afterglow luminescent glass-ceramic and preparation method thereof |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1775902A (en) * | 2005-12-16 | 2006-05-24 | 中国科学院长春应用化学研究所 | Alkaline earth phosphate long afterglow luminous material and its preparing method |
-
2011
- 2011-10-24 CN CN201110324833XA patent/CN102337127A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1775902A (en) * | 2005-12-16 | 2006-05-24 | 中国科学院长春应用化学研究所 | Alkaline earth phosphate long afterglow luminous material and its preparing method |
Non-Patent Citations (1)
| Title |
|---|
| W J SCHIPPER ET AL.: "Trapping of electrons by H+ in the X-ray storage phosphor Ba3(PO4)2:Eu2+, La3+", 《J. PHYS. D: APPL. PHYS.》 * |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103835465A (en) * | 2014-03-03 | 2014-06-04 | 范新晖 | Long-afterglow fluorescent ceramic tile |
| CN105969350A (en) * | 2016-06-03 | 2016-09-28 | 闽南师范大学 | Blue-green long-afterglow luminescent material and preparation method thereof |
| CN108485667A (en) * | 2018-03-28 | 2018-09-04 | 青岛科技大学 | A kind of novel luminescent color is adjustable to fluorescent powder of white light and preparation method thereof |
| CN108485667B (en) * | 2018-03-28 | 2020-09-22 | 青岛科技大学 | Novel fluorescent powder with adjustable light-emitting color to white light and preparation method thereof |
| CN113620599A (en) * | 2021-06-15 | 2021-11-09 | 福建江夏学院 | Novel long-afterglow luminescent glass-ceramic and preparation method thereof |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| Guo et al. | High-efficiency and thermal-stable Eu3+-activated Ca3Y (AlO) 3 (BO3) 4 red-emitting phosphors for near-UV-excited white LEDs | |
| CN101624521B (en) | Vanadate garnet type fluorescent material as well as preparation method and application thereof | |
| CN101962542B (en) | Niobate-based red fluorescent powder for white LED as well as preparation method and application thereof | |
| CN107189776B (en) | Green silicate long-afterglow luminescent material and preparation method thereof | |
| CN101768441B (en) | Rare earth borate luminescent material and preparation material thereof | |
| CN103484112B (en) | Rare-earth europium-activated single-component white-light fluorescent powder and preparation method thereof | |
| CN101402857B (en) | Red luminous material for LED and producing process thereof | |
| CN102660274A (en) | Vanadate single-matrix yellow fluorescent powder and preparation method thereof | |
| CN101575510B (en) | Silicate green long afterglow material and preparation method thereof | |
| CN107418571B (en) | Mn (manganese)2+Doped yellow long-afterglow luminescent material and preparation method thereof | |
| CN102492423A (en) | Red fluorescent material used for white LED (light-emitting diode) and preparation method thereof | |
| CN101974324B (en) | Ultra-long afterglow silicate long afterglow phosphors and preparation method thereof | |
| CN102337127A (en) | Long after-glow phosphorescent material and preparation method thereof | |
| CN102660266A (en) | Yellow long afterglow light-emitting material and preparing method thereof | |
| CN104479676B (en) | Yellow long-lasting phosphor material light emitting material and preparation method thereof | |
| CN101899297B (en) | Orange-yellow long-afterglow luminescent material and preparation method thereof | |
| CN103740364B (en) | A kind of yellow orange-orange red orthosilicate fluorescent material and preparation method thereof | |
| CN103965897B (en) | A kind of LED aluminosilicate yellowish green fluorescent powder and preparation method thereof | |
| Ma et al. | Photoluminescence properties of the high-brightness Eu3+-doped KNaCa2 (PO4) 2 phosphors | |
| CN103396796B (en) | Antimonate long-afterglow fluorescent powder and preparation method thereof | |
| CN102127441A (en) | Eu<2+> activated strontium pyrophosphate photoluminescence material and preparation method thereof | |
| CN108276998B (en) | Trivalent samarium ion doped barium gadolinium titanate red fluorescent powder and preparation method thereof | |
| CN108034423B (en) | Mn (manganese)2+Ion-doped silicate red fluorescent powder, preparation method and application | |
| CN102286281A (en) | Aluminate-based red fluorescent material and preparation method thereof | |
| CN102250614B (en) | High brightness mechanical luminescent material and preparation method 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 | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20120201 |