CN101050361A - Preparation method of jetting, burning luminescent material with long persistence - Google Patents
Preparation method of jetting, burning luminescent material with long persistence Download PDFInfo
- Publication number
- CN101050361A CN101050361A CN 200710099086 CN200710099086A CN101050361A CN 101050361 A CN101050361 A CN 101050361A CN 200710099086 CN200710099086 CN 200710099086 CN 200710099086 A CN200710099086 A CN 200710099086A CN 101050361 A CN101050361 A CN 101050361A
- Authority
- CN
- China
- Prior art keywords
- nitrate
- long
- gel
- temperature
- flame
- 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.)
- Granted
Links
- 239000000463 material Substances 0.000 title claims description 18
- 238000002360 preparation method Methods 0.000 title description 8
- 230000002688 persistence Effects 0.000 title description 2
- 238000000034 method Methods 0.000 claims abstract description 23
- 239000000843 powder Substances 0.000 claims abstract description 19
- KRKNYBCHXYNGOX-UHFFFAOYSA-N citric acid Chemical compound OC(=O)CC(O)(C(O)=O)CC(O)=O KRKNYBCHXYNGOX-UHFFFAOYSA-N 0.000 claims abstract description 18
- 239000008367 deionised water Substances 0.000 claims abstract description 11
- 229910021641 deionized water Inorganic materials 0.000 claims abstract description 11
- 239000007921 spray Substances 0.000 claims abstract description 11
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 11
- 238000001035 drying Methods 0.000 claims abstract description 10
- 238000002156 mixing Methods 0.000 claims abstract description 10
- GRYLNZFGIOXLOG-UHFFFAOYSA-N Nitric acid Chemical compound O[N+]([O-])=O GRYLNZFGIOXLOG-UHFFFAOYSA-N 0.000 claims abstract description 6
- 229910017604 nitric acid Inorganic materials 0.000 claims abstract description 6
- 238000003756 stirring Methods 0.000 claims abstract description 6
- 238000007873 sieving Methods 0.000 claims abstract description 3
- DHEQXMRUPNDRPG-UHFFFAOYSA-N strontium nitrate Chemical compound [Sr+2].[O-][N+]([O-])=O.[O-][N+]([O-])=O DHEQXMRUPNDRPG-UHFFFAOYSA-N 0.000 claims description 25
- 238000010304 firing Methods 0.000 claims description 13
- DVENVBCPDCQQGD-UHFFFAOYSA-N dysprosium(3+);trinitrate Chemical compound [Dy+3].[O-][N+]([O-])=O.[O-][N+]([O-])=O.[O-][N+]([O-])=O DVENVBCPDCQQGD-UHFFFAOYSA-N 0.000 claims description 10
- GAGGCOKRLXYWIV-UHFFFAOYSA-N europium(3+);trinitrate Chemical compound [Eu+3].[O-][N+]([O-])=O.[O-][N+]([O-])=O.[O-][N+]([O-])=O GAGGCOKRLXYWIV-UHFFFAOYSA-N 0.000 claims description 10
- 238000005303 weighing Methods 0.000 claims description 10
- 238000000227 grinding Methods 0.000 claims description 9
- 239000002243 precursor Substances 0.000 claims description 8
- 229910052761 rare earth metal Inorganic materials 0.000 claims description 6
- 239000000126 substance Substances 0.000 claims description 6
- BNGXYYYYKUGPPF-UHFFFAOYSA-M (3-methylphenyl)methyl-triphenylphosphanium;chloride Chemical compound [Cl-].CC1=CC=CC(C[P+](C=2C=CC=CC=2)(C=2C=CC=CC=2)C=2C=CC=CC=2)=C1 BNGXYYYYKUGPPF-UHFFFAOYSA-M 0.000 claims description 5
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 5
- 239000000567 combustion gas Substances 0.000 claims description 5
- 230000008676 import Effects 0.000 claims description 5
- 239000001301 oxygen Substances 0.000 claims description 5
- 229910052760 oxygen Inorganic materials 0.000 claims description 5
- 229910001404 rare earth metal oxide Inorganic materials 0.000 claims description 5
- 150000002910 rare earth metals Chemical class 0.000 claims description 5
- 238000005245 sintering Methods 0.000 abstract description 7
- 150000004645 aluminates Chemical class 0.000 abstract description 5
- 230000015572 biosynthetic process Effects 0.000 abstract description 4
- 239000002994 raw material Substances 0.000 abstract description 3
- 238000005286 illumination Methods 0.000 abstract description 2
- 239000007790 solid phase Substances 0.000 abstract description 2
- 238000003786 synthesis reaction Methods 0.000 abstract description 2
- 229910002651 NO3 Inorganic materials 0.000 abstract 1
- NHNBFGGVMKEFGY-UHFFFAOYSA-N Nitrate Chemical compound [O-][N+]([O-])=O NHNBFGGVMKEFGY-UHFFFAOYSA-N 0.000 abstract 1
- 238000000498 ball milling Methods 0.000 abstract 1
- NLQFUUYNQFMIJW-UHFFFAOYSA-N dysprosium(III) oxide Inorganic materials O=[Dy]O[Dy]=O NLQFUUYNQFMIJW-UHFFFAOYSA-N 0.000 abstract 1
- RSEIMSPAXMNYFJ-UHFFFAOYSA-N europium(III) oxide Inorganic materials O=[Eu]O[Eu]=O RSEIMSPAXMNYFJ-UHFFFAOYSA-N 0.000 abstract 1
- 230000002045 lasting effect Effects 0.000 abstract 1
- 239000000047 product Substances 0.000 description 11
- 238000004519 manufacturing process Methods 0.000 description 10
- 239000000499 gel Substances 0.000 description 9
- 239000013078 crystal Substances 0.000 description 4
- 239000000203 mixture Substances 0.000 description 4
- 108010010803 Gelatin Proteins 0.000 description 3
- 239000008273 gelatin Substances 0.000 description 3
- 229920000159 gelatin Polymers 0.000 description 3
- 235000019322 gelatine Nutrition 0.000 description 3
- 235000011852 gelatine desserts Nutrition 0.000 description 3
- 238000003980 solgel method Methods 0.000 description 3
- 230000036561 sun exposure Effects 0.000 description 3
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- 229910052693 Europium Inorganic materials 0.000 description 2
- OGPBJKLSAFTDLK-UHFFFAOYSA-N europium atom Chemical compound [Eu] OGPBJKLSAFTDLK-UHFFFAOYSA-N 0.000 description 2
- 239000012535 impurity Substances 0.000 description 2
- 238000001228 spectrum Methods 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 1
- BPQQTUXANYXVAA-UHFFFAOYSA-N Orthosilicate Chemical compound [O-][Si]([O-])([O-])[O-] BPQQTUXANYXVAA-UHFFFAOYSA-N 0.000 description 1
- 229910003668 SrAl Inorganic materials 0.000 description 1
- UCKMPCXJQFINFW-UHFFFAOYSA-N Sulphide Chemical compound [S-2] UCKMPCXJQFINFW-UHFFFAOYSA-N 0.000 description 1
- 239000012190 activator Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008033 biological extinction Effects 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 238000009841 combustion method Methods 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000000695 excitation spectrum Methods 0.000 description 1
- 239000012467 final product Substances 0.000 description 1
- 235000013312 flour Nutrition 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 238000004020 luminiscence type Methods 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 230000002085 persistent effect Effects 0.000 description 1
- -1 rare-earth ion Chemical class 0.000 description 1
Images
Landscapes
- Luminescent Compositions (AREA)
Abstract
This invention discloses a method for preparing long-afterglow luminescent powder by combination of sol-gel technique and jet burning. The method solves the problems of high synthesis temperature and ununiforms raw materials mixing faced by traditional high-temperature solid-phase sintering method. The method comprises: adding Eu2O3 and Dy2O3 into nitric acid to obtain nitrate solution, adding deionized water, dissolving, mixing uniformly, adding citric acid, stirring at constant temperature to obtain a uniform sol, drying in a drier to obtain a dried gel, ball-milling in a ball mill, sieving with a 50 mesh sieve, introducing into the flame of a spray gun, and burning under 0.10-0.35 MPa to obtain aluminate long-afterglow luminescent powder with afterglow lasting 30 h after 30 min sunlight illumination.
Description
Technical field:
The present invention relates to the method that a kind of torch firing prepares long after glow luminous material, belong to the application field of light emitting materials.
Background technology:
Long after glow luminous material belongs to embedded photoluminescent material, it be a kind of can be under sunlight and ultraviolet short irradiation, absorb light and the material that luminous energy is stored.After illumination stopped, this material can send light constantly, and in the place of dark, the human eye visible is luminous can be continued more than 10 hours.At present, long after glow luminous material has been widely used in the facilities such as communications and transportation, fire-fighting emergent, for example: the safety of public places such as subway, office block, airport, theater indicates all has long-afterglow material to use.
At present, long afterglow luminescence material mainly contains sulfide, alkaline earth aluminate and silicate three big systems, in the market aluminate serial commonly.In recent years, with SrAl
2O
4: Eu
2+, Dy
3+, Sr
4Al
14O
25: Eu
2+, Dy
3+, for the rare-earth ion activated alkaline earth aluminates phosphors of representative with its excellent luminescent properties and long afterglow property.
Alkaline earth aluminate persistent luminescent material uses the high temperature solid-phase sintering method to make usually, at present the marketization.But there is the synthesis temperature height in this method, and raw material is difficult for mixing, and the individual event compound is difficult to obtain, crystal grain is thick, product hardness height, product are destroyed or sneak into shortcomings such as the impurity luminosity reduces significantly because of crystal formation after fine grinding, thereby have reduced the use properties of product.In addition, be divalent europium for what guarantee to occur in the product, all require to use reducing atmosphere [carbon reduction, or hydrogen adds the reduction of nitrogen], complicated process of preparation.
Summary of the invention
The object of the present invention is to provide that a kind of production technique is simple, with short production cycle, the torch firing novel preparation method of the long-afterglow luminescent powder that do not need reducing atmosphere.
The invention provides the method that a kind of torch firing prepares long after glow luminous material, it is characterized in that, may further comprise the steps:
1) at first takes by weighing rare earth oxide Eu
2O
3, Dy
2O
3, join in the nitric acid respectively and dissolve, add deionized water and make europium nitrate and the Dysprosium trinitrate solution for standby that concentration is 0.1mol/L-0.5mol/L;
2) Sr (NO in molar ratio
3)
2: Al (NO
3)
39H
2O=1.0: 2.0-3.0 takes by weighing needed strontium nitrate and aluminum nitrate, is dissolved in the deionized water, and moving into amount of substance again is that strontium nitrate 1%-5% europium nitrate solution and amount of substance are the Dysprosium trinitrate solution of strontium nitrate 2%-10%, mixes standby;
3) be that strontium nitrate 3-6 citric acid doubly joins in the mixing solutions for preparing above with amount of substance, stir under 60-90 ℃ of temperature with agitator to make its thorough mixing and formed gel in 3-4 hour;
4) above-mentioned gel is put into thermostatic drying chamber, under 90-150 ℃ of temperature dry 5-10 hour, form xerogel, again the xerogel presoma is put into grinding in ball grinder, cross 50 purpose sieves;
5) will sieving afterwards, the Gel Precursor powder imports in the flame of spray gun, combustion gases are industrial oxygen, and adding rotation wind at the nozzle place of spray gun, gaseous tension is 0.10-0.35MPa, makes precursor powder burn till the long-afterglow luminescent powder that contains rare earth in the flame that rotation is risen.
The present invention combines sol-gel method and torch firing, because sol-gel method is adopted in the preparation of presoma, so raw material mixes, process then is the torch firing preparation, so preparation cycle is short, in addition, because of torch firing and flour, overcome after fine grinding destroyed or sneak into shortcoming such as impurity amplitude reduction because of crystal formation.In addition, because product preparation of the present invention is to carry out, do not need reducing atmosphere in air, therefore, production cost has the reduction of increasing.
The invention has the beneficial effects as follows:
Adopt the present invention to simplify production technique, the big at present high-temperature sintering process of using always of producing need mix through batching, drying, and sintering, operations such as fine grinding, technological process is numerous and diverse, and the production cycle is long, and a production cycle needs 3-5 talent to finish; And the present invention only need prepare the precursor powder torch firing and gets final product, and in the torch firing process, produces nature and burns and form among a small circle reducing atmosphere, reaches the environment that forms divalent europium, thereby forms the steady persistence activator.Whole torch firing process only needs can finish about ten seconds, not only saves time but also laborsaving; High-temperature sintering process not only the production cycle long, and sintering temperature height (being generally more than 1400 degree), the initial product crystal grain that sintering obtains is thick, and hardness is big, must can be used as luminescent material through the fine grinding rear uses, the whole process of production power consumption is very big, and the present invention is not only with short production cycle, and Prepared by Sol Gel Method temperature low (about 100 ℃), product is that spumescence is loose porous, very easily pulverize, and combine in the torch firing method, the torch firing process time is than combustion method shorter (about ten seconds).In addition, because product preparation of the present invention is to carry out, do not need reducing atmosphere in air, therefore, production cost has the reduction of increasing.
Description of drawings:
Fig. 1 is the excitation spectrum and the luminescent spectrum of embodiments of the invention 1 prepared sample.
Fig. 2 is the time extinction curve of the luminescent spectrum of embodiments of the invention 1 prepared sample.
Embodiment
Once the present invention is described in detail in conjunction with example, but the present invention be not subjected to these make embodiment limit.
Embodiment 1: for achieving the above object, at first take by weighing rare earth oxide Eu
2O
3, Dy
2O
3, join in the nitric acid respectively and dissolve, adding deionized water degree of making is europium nitrate and the Dysprosium trinitrate solution for standby of 0.1mol/L.By following mol ratio Sr (NO
3)
2: Al (NO
3)
39H
2O=1.0: 2.0, take by weighing needed strontium nitrate and aluminum nitrate, be dissolved in the deionized water, move into the Dysprosium trinitrate solution of molar percentage 1% europium nitrate solution and 2% again, mix standby.Be stoichiometric ratio that the citric acid of 3 times of strontium nitrates joins in the solution for preparing above again, stir under 60 ℃ of temperature with agitator to make its thorough mixing and formed gel in 4 hours.Gel is put into thermostatic drying chamber, drying is 10 hours under 90 ℃ of temperature, forms xerogel, again the xerogel presoma is put into ball mill grinding and grinds, cross 50 purpose sieves, at last, Gelatin powder imports in the flame of spray gun, and combustion gases are industrial oxygen, and add rotation wind at the nozzle place of spray gun, gaseous tension is 0.10MPa, makes precursor powder burn till the long-afterglow luminescent powder that contains rare earth in the flame that rotation is risen, and is finished product.After 30 minutes, twilight sunset was 25 hours this material at sun exposure.
Embodiment 2: for achieving the above object, at first take by weighing rare earth oxide Eu
2O
3, Dy
2O
3, join in the nitric acid respectively and dissolve, adding deionized water degree of making is europium nitrate and the Dysprosium trinitrate solution for standby of 0.2mol/L.By following mol ratio Sr (NO
3)
2: Al (NO
3)
39H
2O=1.0: 2.5, take by weighing needed strontium nitrate and aluminum nitrate, be dissolved in the deionized water, move into the Dysprosium trinitrate solution of molar percentage 3% europium nitrate solution and 6% again, mix standby.Be stoichiometric ratio that the citric acid of 5 times of strontium nitrates joins in the solution for preparing above again, stir under 80 ℃ of temperature with agitator to make its thorough mixing and formed gel in 3.5 hours.Gel is put into thermostatic drying chamber, drying is 8 hours under 120 ℃ of temperature, forms xerogel, again the xerogel presoma is put into ball mill grinding and grinds, cross 50 purpose sieves, at last, Gelatin powder imports in the flame of spray gun, and combustion gases are industrial oxygen, and add rotation wind at the nozzle place of spray gun, gaseous tension is 0.20MPa, makes precursor powder burn till the long-afterglow luminescent powder that contains rare earth in the flame that rotation is risen, and is finished product.After 30 minutes, twilight sunset was 28 hours this material at sun exposure.
Embodiment 3: for achieving the above object, at first take by weighing rare earth oxide Eu
2O 3, Dy
2O
3, join in the nitric acid respectively and dissolve, adding deionized water degree of making is europium nitrate and the Dysprosium trinitrate solution for standby of 0.5mol/L.By following mol ratio Sr (NO
3)
2: Al (NO
3)
39H
2O=1.0: 3.0, take by weighing needed strontium nitrate and aluminum nitrate, be dissolved in the deionized water, move into the Dysprosium trinitrate solution of molar percentage 5% europium nitrate solution and 10% again, mix standby.Be stoichiometric ratio that the citric acid of 6 times of strontium nitrates joins in the solution for preparing above again, stir under 90 ℃ of temperature with agitator to make its thorough mixing and formed gel in 3 hours.Gel is put into thermostatic drying chamber, drying is 5 hours under 150 ℃ of temperature, forms xerogel, again the xerogel presoma is put into ball mill grinding and grinds, cross 50 purpose sieves, at last, Gelatin powder imports in the flame of spray gun, and combustion gases are industrial oxygen, and add rotation wind at the nozzle place of spray gun, gaseous tension is 0.35MPa, makes precursor powder burn till the long-afterglow luminescent powder that contains rare earth in the flame that rotation is risen, and is finished product.After 30 minutes, twilight sunset was 25 hours this material at sun exposure.
Claims (1)
1, a kind of torch firing prepares the method for long after glow luminous material, it is characterized in that, may further comprise the steps:
1) at first takes by weighing rare earth oxide Eu
2O
3, Dy
2O
3, join in the nitric acid respectively and dissolve, add deionized water and make europium nitrate and the Dysprosium trinitrate solution for standby that concentration is 0.1mol/L-0.5mol/L;
2) Sr (NO in molar ratio
3)
2: Al (NO
3)
39H
2O=1.0: 2.0-3.0 takes by weighing needed strontium nitrate and aluminum nitrate, is dissolved in the deionized water, and moving into amount of substance again is that strontium nitrate 1%-5% europium nitrate solution and amount of substance are the Dysprosium trinitrate solution of strontium nitrate 2%-10%, mixes standby;
3) be that strontium nitrate 3-6 citric acid doubly joins in the mixing solutions for preparing above with amount of substance, stir under 60-90 ℃ of temperature with agitator to make its thorough mixing and formed gel in 3-4 hour;
4) above-mentioned gel is put into thermostatic drying chamber, under 90-150 ℃ of temperature dry 5-10 hour, form xerogel, again the xerogel presoma is put into grinding in ball grinder, cross 50 purpose sieves;
5) will sieving afterwards, the Gel Precursor powder imports in the flame of spray gun, combustion gases are industrial oxygen, and adding rotation wind at the nozzle place of spray gun, gaseous tension is 0.10-0.35MPa, makes precursor powder burn till the long-afterglow luminescent powder that contains rare earth in the flame that rotation is risen.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2007100990868A CN100497520C (en) | 2007-05-11 | 2007-05-11 | Torchfiring preparation method of luminescent material with long afterglow |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2007100990868A CN100497520C (en) | 2007-05-11 | 2007-05-11 | Torchfiring preparation method of luminescent material with long afterglow |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101050361A true CN101050361A (en) | 2007-10-10 |
| CN100497520C CN100497520C (en) | 2009-06-10 |
Family
ID=38781966
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2007100990868A Expired - Fee Related CN100497520C (en) | 2007-05-11 | 2007-05-11 | Torchfiring preparation method of luminescent material with long afterglow |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN100497520C (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103665967A (en) * | 2013-11-29 | 2014-03-26 | 江苏帕齐尼铜业有限公司 | Color-changing coating for copper |
| CN107945690A (en) * | 2017-11-29 | 2018-04-20 | 四川三盛恒业科技有限公司 | A kind of long afterglow self-luminescence public identifier board and preparation method thereof |
| CN112160158A (en) * | 2020-09-15 | 2021-01-01 | 浙江夜光明光电科技股份有限公司 | Preparation process of printed light-reflecting and light-storing fabric prepared by same |
-
2007
- 2007-05-11 CN CNB2007100990868A patent/CN100497520C/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103665967A (en) * | 2013-11-29 | 2014-03-26 | 江苏帕齐尼铜业有限公司 | Color-changing coating for copper |
| CN107945690A (en) * | 2017-11-29 | 2018-04-20 | 四川三盛恒业科技有限公司 | A kind of long afterglow self-luminescence public identifier board and preparation method thereof |
| CN107945690B (en) * | 2017-11-29 | 2020-03-06 | 四川三盛恒业科技有限公司 | Long-afterglow self-luminous public signboard and manufacturing method thereof |
| CN112160158A (en) * | 2020-09-15 | 2021-01-01 | 浙江夜光明光电科技股份有限公司 | Preparation process of printed light-reflecting and light-storing fabric prepared by same |
| CN112160158B (en) * | 2020-09-15 | 2022-10-04 | 浙江夜光明光电科技股份有限公司 | Preparation process of printed light-reflecting and light-storing fabric prepared by same |
Also Published As
| Publication number | Publication date |
|---|---|
| CN100497520C (en) | 2009-06-10 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| Peng et al. | Combustion synthesis and photoluminescence of SrAl2O4: Eu, Dy phosphor nanoparticles | |
| Yongqing et al. | Properties of red-emitting phosphors Sr2MgSi2O7: Eu3+ prepared by gel-combustion method assisted by microwave | |
| CN1803974A (en) | Method for preparing oxide core shell structured spherical luminescent material | |
| Guo et al. | Effect of Eu3+ contents on the structure and properties of BaLa2ZnO5: Eu3+ phosphors | |
| CN100497520C (en) | Torchfiring preparation method of luminescent material with long afterglow | |
| CN101338188B (en) | Method for preparing long persistence luminescent material with high initial fluorescent intensity | |
| CN101565614B (en) | Orange-red long afterglow Luminescent Material | |
| Zhou et al. | Morphology control and luminescence properties of BaMgAl10O17: Eu2+ phosphors prepared by spray pyrolysis | |
| CN108559500B (en) | Solvent heat-assisted method for preparing complex-phase titanate red long-afterglow fluorescent powder | |
| US20130099162A1 (en) | Borate based red light emitting material and preparation method thereof | |
| CN101851509A (en) | Method for preparing rare earth cerium ion-doped yttrium aluminum garnet fluorescent powder from network gel | |
| CN101760191B (en) | High-brightness barium-silicate-based blue-green fluorescent powder for LED and high-temperature reducing preparation method thereof | |
| CN1133710C (en) | Photoluminescent spherical porous ceramic material with ultra-long afterglow and its synthesizing process | |
| CN102220132B (en) | Luminescent material doped with metal nanoparticles and preparation method thereof | |
| CN106978177B (en) | Red long afterglow luminescent material and production method thereof | |
| CN1632053A (en) | Method for self-propagating combustion synthesis of strontium europium dysprosium aluminate long afterglow luminescent materials | |
| CN107163943A (en) | It is a kind of to be suitable near ultraviolet excitated regulatable fluorescent material of spectrum and preparation method thereof | |
| CN102911667B (en) | Synthesis method of Sr2CeO4 luminescent material doped with two rare earth elements Eu<3+> and Re | |
| CN1861737A (en) | Preparation process of long afterglow luminescent powder superfine powder of alkaline earth aluminate by codeposition/microwave method | |
| Xing et al. | Characterization of superfine Sr2CeO4 powder prepared by microemulsion-heating method | |
| CN106701082B (en) | A kind of preparation method based on Sm2+ ion up-conversion luminescence composite materials | |
| CN113980680B (en) | Ion co-doped ultraviolet long afterglow luminescent material, preparation method and application thereof | |
| CN1580181A (en) | Process for preparing strontium aluminate series luminescence material by self-spreading synthesis method | |
| CN102888224A (en) | Method for preparing ultraviolet excited or vacuum ultraviolet excited green emitting phosphor | |
| CN103361045B (en) | Nitrogen oxide fluorescent powder used in white-light LED, 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 | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20090610 Termination date: 20100511 |