CN102660289A - Europium ion Eu<3+> activated tellurate red luminescence fluorescent powder, preparation method and application - Google Patents
Europium ion Eu<3+> activated tellurate red luminescence fluorescent powder, preparation method and application Download PDFInfo
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- CN102660289A CN102660289A CN2012101363304A CN201210136330A CN102660289A CN 102660289 A CN102660289 A CN 102660289A CN 2012101363304 A CN2012101363304 A CN 2012101363304A CN 201210136330 A CN201210136330 A CN 201210136330A CN 102660289 A CN102660289 A CN 102660289A
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Abstract
The invention discloses europium ion Eu<3+> activated tellurate red luminescence fluorescent powder, a preparation method and application. The fluorescent powder has a chemical formula of NMR1-xEux[TeO6], wherein N is one of Li<+> and Na<+>, M is one of Ca<2+>, Ba<2+> and Sr<2+>, R is one of La<3+>, Gd<3+> and Bi<3+>, x is the Eu<3+> doped mole percentage, and x is more than or equal to 0.0001 and is less than or equal to 1.0. The preparation method comprises the following steps of: weighing raw materials at a chemical molar ratio; evenly mixing; calcining under the air atmosphere; grinding the obtained mixture again; and evenly mixing; and calcining again under the air atmosphere to obtain red fluorescent powder. The red fluorescent powder has the advantages of strong activation near 395nm, high luminescence efficiency and good thermal stability. Under the activation of the near ultraviolet light, the fluorescent powder emits bright light, and the luminescence wavelength is mainly 613nm which is quite matched with the emission wavelength of a near ultraviolet light emitting diode (LED) chip. The europium ion Eu<3+> activated tellurate red luminescence fluorescent powder is used for preparing white-light LED illumination devices.
Description
Technical field
The present invention relates to a kind of trivalent europium ion Eu
3+The red luminescent phosphor of activated tellurate, preparation method and application belong to inorganic fluorescent material technical field.
Background technology
White light LEDs be after incandescent light, fluorescent lamp and electricity-saving lamp the 4th generation lighting electric light source; The green light source that is called as 21 century, have environmental protection, overlong service life, energy-efficient, anti-adverse environment, simple in structure, volume is little, in light weight, response is fast and the good characteristics of security.Reported first was with YAG:Ce in 1997
3+Yellow emitting fluorescence is as light-converting material, up to the present, and blue led and YAG:Ce
3+The luminous efficiency of the white light LEDs of phosphor combination has surpassed 100lm/W, has surpassed the luminous efficiency of luminescent lamp.Yet, with the blue light and the YAG:Ce of blue led
3+There is its inherent defective in high-brightness white-light LED that the sodium yellow of fluorescent material combines: lack red light and cause the bad problem of color developing.
At present, the commercial red fluorescence powder of white light LEDs is europkium-activated yttrium oxide Y
2O
3: Eu
3+Or yttrium oxysulfide Y
2O
2S:Eu
3+Although glow color is pure, exist main drawback to be: luminous efficiency is low under the exciting of near-ultraviolet light or blue light, is green powder ZnS:Cu
+, Al
3+With blue powder BaMgAl
10O
17: Eu
2+1/8th, and the life-span is also short than green powder and blue powder.Therefore the red fluorescence powder of development of new is a focus both domestic and external.
Tellurate matrix be one type good luminous with excite matrix, have good luminescent properties, thermostability and chemicalstability, wide material sources, cheap extremely people's attention.For example Chinese invention patent CN101224947 discloses the luminous oxyhalide tellurite glass of a kind of 2 mu m wavebands, and this glass is through common scorification preparation.It is good that the oxyhalide tellurite glass of this invention has infrared transmittivity height, transparent no crystallization, no bubble striped, physico-chemical property; In 2 mu m waveband luminous efficiency advantages of higher, be applicable to infrared special optical fiber substrate material among 2 mu m waveband mid-infrared laser optical lens or the 2 μ m.
Rear-earth-doped tellurate or halogen tellurate and Luminescence Study of Modified Porous thereof are the emphasis that people pay close attention to always.Literature survey shows, with rare-earth ion activated with
NMR
1-xEu
x[TeO
6] (N is an alkalimetal ion, and M is an alkaline earth metal ion, and R is a rare earth ion) see disclosure of the Invention and report for the fluorescence powder of substrate material.
Summary of the invention
The present invention is in order to overcome the low defective with poor stability near ultraviolet and blue region launching efficiency of present red fluorescent powder for white radiation LED; A kind of launching efficiency height, stable performance are provided; And preparation technology is simple, free of contamination finely ground particle red fluorescent powder and preparation method thereof; And be applied to be engaged near the 395nm this novel tellurate red fluorescence powder and near the led chip the 470nm, preparation White-light LED illumination device.
For reaching above purpose, the technical scheme that the present invention adopts provides a kind of europium ion Eu
3+The red luminescent phosphor of activated tellurate, its chemical formula does
NMR 1-xEu
x[TeO
6], wherein,
NBe lithium ion Li
+, sodium ion Na
+In a kind of,
MBe calcium ion Ca
2+, barium ion Ba
2+, strontium ion Sr
2+In a kind of,
RBe lanthanum ion La
3+, gadolinium ion Gd
3+, bismuth ion Bi
3+In a kind of;
xBe europium ion Eu
3+The doping molecular fraction, 0.0001≤
x≤1.0.
A kind of europium ion Eu
3+The preparation method of the red luminescent phosphor of activated tellurate comprises the steps:
(1) presses chemical formula
NMR 1-xEu
x[TeO
6] in the atomic molar ratio, to contain basic metal
NIon, earth alkali metal
MIon, rare earth
RIon, europium ion Eu
3+, tellurium ion Te
6+Compound grind and mix;
NBe lithium ion Li
+, sodium ion Na
+In a kind of,
MBe calcium ion Ca
2+, barium ion Ba
2+, strontium ion Sr
2+In a kind of,
RBe lanthanum ion La
3+, gadolinium ion Gd
3+, bismuth ion Bi
3+In a kind of;
xBe europium ion Eu
3+The doping molecular fraction, 0.0001≤
x≤1.0;
(2) with mixture presintering under air atmosphere of step (1), sintering temperature is 300～750 ℃, and sintering time is 1～10 hour;
(3) behind the mixture naturally cooling with step (2), grind and mix, calcining under air atmosphere, calcining temperature is 750～1000 ℃, calcination time is 1～10 hour, obtains a kind of europium ion Eu
3+Activated tellurate red fluorescence powder.
The described basic metal that contains
NThe ionic compound,
NBe lithium ion Li
+Compound be one or more the combination in sodium oxide, yellow soda ash, SODIUMNITRATE, sodium hydroxide, the sodium sulfate;
NBe sodium ion Na
+Compound be one or more the combination in Lithium Oxide 98min, Quilonum Retard, lithium nitrate, Lithium Hydroxide MonoHydrate, the Lithium Sulphate.
The described earth alkali metal that contains
MCompound,
MBe calcium ion Ca
2+Compound be one or more the combination in quicklime, calcium hydroxide, lime carbonate, the nitrocalcite;
MBe barium ion Ba
2+Compound be one or more the combination in barium oxide, hydrated barta, barium carbonate, the nitrate of baryta;
MBe strontium ion Sr
2+Compound be one or more the combination in strontium oxide, strontium hydroxide, Strontium carbonate powder, the strontium nitrate.
The described rare earth ion that contains
RCompound,
RBe lanthanum ion La
3+Compound be one or both the mixture in lanthanum trioxide, the Lanthanum trinitrate;
RBe gadolinium ion Gd
3+Compound be one or both the mixture in gadolinium sesquioxide, the Gadolinium trinitrate;
RBe bismuth ion Bi
3+Compound be one or both the mixture in bismuth oxide, the Bismuth trinitrate.
The described tellurium ion Te that contains
6+Compound be tellurium trioxide.
The described europium ion Eu that contains
3+Compound be a kind of or their combination in europium sesquioxide, europium, the europium nitrate.
A prioritization scheme of the present invention is: the described pre-burning of step (2) is become 1～3 time, and sintering temperature is 350～600 ℃, and sintering time is 3～5 hours; The described calcining temperature of step (3) is 800～950 ℃, and calcination time is 5～8 hours.
A kind of europium ion Eu of the present invention
3+The application of the red luminescent phosphor of activated tellurate is blueness and the green emitting phosphor with its matched with proper, applies and is packaged in outside ultraviolet and the blue-ray LED diode chip for backlight unit, preparation White-light LED illumination device.
Compared with prior art, the advantage of technical scheme of the present invention is:
1, the substrate material that provides of technical scheme of the present invention, owing to contain rare earth ion R in the lattice, so be easy to realize Eu
3+High-concentration dopant, Eu
3+Doping content can reach 70mol% and luminous quencher can not occur, this characteristic helps red fluorescence powder and resists highdensity exciting irradiation and luminescence quenching do not occur.
2, with existing red fluorescence powder, for example Y
2O
2S:Eu
3+, Y
2O
3: Eu
3+Luminescent material is compared; Red fluorescence powder by technical scheme preparation of the present invention has stronger exciting about near ultraviolet 395nm; This zone is the radiation wavelength of near ultraviolet and blue-light LED chip; With the blueness and the green emitting phosphor of its matched with proper, and apply and be packaged in outside ultraviolet and the blue-ray LED diode chip for backlight unit, can be applicable to prepare White-light LED illumination equipment.
3, with other sulfide Y
2O
2S:Eu
3+, telluride is that the red fluorescence powder of substrate material is compared, no waste water and gas discharging is pollution-free in the preparation process of substrate material of the present invention, and preparation technology is simple, and is lower for the requirement of equipment, helps suitability for industrialized production and applies.
Description of drawings
Fig. 1 is the material sample LiBaLa by technology implementation example of the present invention 1 preparation
0.9Eu
0.1[TeO
6] X-ray diffractogram;
Fig. 2 is the material sample LiBaLa by technology implementation example of the present invention 1 preparation
0.9Eu
0.1[TeO
6] emmission spectrum figure under excitation spectrum under 613 nm and 395 nm;
Fig. 3 is the material sample NaBaLa by technology implementation example of the present invention 2 preparations
0.75Eu
0.25[TeO
6] X-ray diffractogram;
Fig. 4 is the material sample NaBaLa by technology implementation example of the present invention 2 preparations
0.9Eu
0.1[TeO
6] emmission spectrum figure under excitation spectrum under 613 nm and 395 nm;
Fig. 5 is the material sample NaCaBi by technology implementation example of the present invention 3 preparations
0.95Eu
0.05[TeO
6] X-ray diffractogram;
Fig. 6 is the material sample NaCaBi by technology implementation example of the present invention 3 preparations
0.95Eu
0.05[TeO
6] under 613 nm excitation spectrum and the emmission spectrum figure under 395 nm.
Embodiment
Below in conjunction with accompanying drawing and embodiment technical scheme of the present invention is done further to set forth.
According to chemical formula LiBaLa
0.9Eu
0.1[TeO
6] in the stoichiometric ratio of each element take by weighing respectively: europium sesquioxide 0.0704 gram, lanthanum trioxide 0.5865 gram, barium carbonate 0.7892 gram, Quilonum Retard 0.15 gram, tellurium trioxide 0.6384 gram; All raw materials that take by weighing are ground in agate mortar and mix; Select air atmosphere, the raw material that gained is mixed 350 ℃ of following pre-burnings 7 hours, is cooled to room temperature in retort furnace; Regrinding and mix after, in retort furnace,, be cooled to room temperature and obtain red luminescent phosphor LiBaLa 850 ℃ of following sintering 10 hours
0.9Eu
0.1[TeO
6].
Referring to accompanying drawing 1, it is the X-ray diffractogram that present embodiment prepares sample, and the result shows that this structure is typical calcium titanium ore structure, is single pure phase.
Referring to accompanying drawing 2, it is that present embodiment prepares the emmission spectrum figure of sample under excitation spectrum under 613 nm and 395 nm.From to finding out that the red luminous of this material has effective absorption near ultraviolet 275nm and 395nm zone the exciting light spectrogram that obtains by the present invention's technology preparation sample monitoring emission light 613 nm; This zone is the radiation wavelength of near ultraviolet and blue-light LED chip, with the blueness and the green emitting phosphor of its matched with proper, and applies and is packaged in outside ultraviolet and the blue-ray LED diode chip for backlight unit, can be applicable to prepare White-light LED illumination equipment.Excite down at near-ultraviolet light 395nm, can be found out by figure, this material is main luminous at red luminous wave band 613 nm.
Embodiment 2
According to chemical formula NaBaLa
0.75Eu
0.25[TeO
6] in the stoichiometric ratio of each element take by weighing respectively: europium sesquioxide 1.76 grams, lanthanum trioxide 0.4888 gram, barium carbonate 0.7894 gram, yellow soda ash 0.202 gram, tellurium trioxide 0.6384 gram; All raw materials that take by weighing are ground in agate mortar and mix; Select air atmosphere, the raw material that gained is mixed 380 ℃ of following pre-burnings 2 hours, is cooled to room temperature in retort furnace; Regrinding and mix after, in retort furnace 800 ℃ of following sintering 10 hours, be cooled to mixed at room temperature even red luminescent phosphor NaBaLa
0.75Eu
0.25[TeO
6].
Referring to accompanying drawing 3, it is the X-ray diffractogram that present embodiment prepares sample, and the result shows that this structure is typical calcium titanium ore structure, is single pure phase.
Referring to accompanying drawing 4; From to finding out the exciting light spectrogram that obtains by the present invention's technology preparation sample monitoring emission light 613 nm; The red luminous blue region near ultraviolet 395nm and 460nm of this material has effective absorption, can mate near ultraviolet and blue-light LED chip well.Excite the luminescent spectrum that obtains down at near-ultraviolet light 395nm, can be found out by figure, this material is main luminous at red luminous wave band 613 nm.
Fluorescent material has very strong launching efficiency near ultraviolet region and blue region; This zone is the radiation wavelength of near ultraviolet and blue-light LED chip; Therefore; Blueness and green emitting phosphor with the tellurate red fluorescence powder matched with proper for preparing apply and are packaged in outside ultraviolet and the blue-ray LED diode chip for backlight unit, preparation White-light LED illumination device.
Embodiment 3
According to chemical formula NaCaBi
0.95Eu
0.05[TeO
6] in the stoichiometric ratio of each element take by weighing respectively: europium sesquioxide 0.0352 gram, bismuth oxide 0.932 gram, lime carbonate 0.4004 gram, yellow soda ash 0.202 gram, tellurium trioxide 0.6384 gram; All raw materials that take by weighing are ground in agate mortar and mix; Select air atmosphere, the raw material that gained is mixed 400 ℃ of following pre-burnings 3 hours, is cooled to room temperature in retort furnace; Regrinding and mix after, in retort furnace 880 ℃ of following sintering 9 hours, be cooled to mixed at room temperature even red luminescent phosphor NaCaBi
0.95Eu
0.05[TeO
6].
Referring to accompanying drawing 5 is that the result shows that this structure is typical calcium titanium ore structure, is single pure phase by the X-ray diffractogram of originally executing example preparation sample.
Referring to accompanying drawing 6; From to finding out the exciting light spectrogram that obtains by the present invention's technology preparation sample monitoring emission light 613 nm; The red luminous of this material has effective absorption at the near ultraviolet 394nm of 394nm and the blue region of 485nm, can mate near ultraviolet and blue-light LED chip well.Excite the luminescent spectrum that obtains down at near-ultraviolet light 394nm, can be found out by figure, this material is main luminous at red luminous wave band 613 nm.
Embodiment 4
According to chemical formula LiCaLa
0.8Eu
0.2[TeO
6] in the stoichiometric ratio of each element take by weighing respectively: europium sesquioxide 0.1408 gram, lanthanum trioxide 0.5212 gram, lime carbonate 0.4004 gram, Quilonum Retard 0.15 gram, tellurium trioxide 0.6384 gram; All raw materials that take by weighing are ground in agate mortar and mix; Select air atmosphere, the raw material that gained is mixed 430 ℃ of following pre-burnings 6 hours, is cooled to room temperature in retort furnace; Regrinding and mix after, in retort furnace 900 ℃ of following sintering 8 hours, be cooled to mixed at room temperature even red luminescent phosphor: LiCaLa
0.8Eu
0.2[TeO
6].
Its main structure properties, excitation spectrum and luminescent spectrum are similar with embodiment 1.
Embodiment 5
According to chemical formula LiSrLa
0.6Eu
0.4[TeO
6] in the stoichiometric ratio of each element take by weighing respectively: europium sesquioxide 0.2816 gram, lanthanum trioxide 0.3912 gram, Strontium carbonate powder 0.5904 gram, Quilonum Retard 0.15 gram, tellurium trioxide 0.6384 gram; All raw materials that take by weighing are ground in agate mortar and mix; Select air atmosphere, the raw material that gained is mixed 480 ℃ of following pre-burnings 6 hours, is cooled to room temperature in retort furnace; Regrinding and mix after, in retort furnace 950 ℃ of following sintering 7 hours, be cooled to mixed at room temperature even red luminescent phosphor: LiSrLa
0.6Eu
0.4[TeO
6].
Its main structure properties, excitation spectrum and luminescent spectrum are similar with embodiment 2.
Embodiment 6
According to chemical formula LiSrGa
0.7Eu
0.3[TeO
6] in the stoichiometric ratio of each element take by weighing respectively: europium sesquioxide 0.2112 gram, gadolinium sesquioxide 0.5184 gram, Strontium carbonate powder 0.5904 gram, Quilonum Retard 0.15 gram, tellurium trioxide 0.6384 gram; All raw materials that take by weighing are ground in agate mortar and mix; Select air atmosphere, the raw material that gained is mixed 500 ℃ of following pre-burnings 3 hours, is cooled to room temperature in retort furnace; Regrinding and mix after, in retort furnace 850 ℃ of following sintering 7 hours, be cooled to mixed at room temperature even red luminescent phosphor: LiSrGa
0.7Eu
0.3[TeO
6].
Its main structure properties, excitation spectrum and luminescent spectrum are similar with embodiment 3.
Embodiment 7
According to chemical formula NaCaBi
0.3Eu
0.7[TeO
6] in the stoichiometric ratio of each element take by weighing respectively: europium sesquioxide 0.4928 gram, bismuth oxide 0.2796 gram, yellow soda ash 0.202 gram, lime carbonate 0.4004 gram, tellurium trioxide 0.6384 gram; All raw materials that take by weighing are ground in agate mortar and mix; Select air atmosphere, the raw material that gained is mixed 550 ℃ of following pre-burnings 4 hours, is cooled to room temperature in retort furnace; Regrinding and mix after, in retort furnace 800 ℃ of following sintering 6 hours, be cooled to mixed at room temperature even red luminescent phosphor: NaCaBi
0.3Eu
0.7[TeO
6].
Its main structure properties, excitation spectrum and luminescent spectrum are similar with embodiment 3.
Embodiment 8
According to chemical formula NaSrLa
0.5Eu
0.5[TeO
6] in the stoichiometric ratio of each element, take by weighing respectively: europium sesquioxide 0.352 gram, lanthanum trioxide 0.326 gram, yellow soda ash 0.15 gram, Strontium carbonate powder 0.5904 gram, tellurium trioxide 0.6384 gram; All raw materials that take by weighing are ground in agate mortar and mix; Select air atmosphere, the raw material that gained is mixed 500 ℃ of following pre-burnings 4 hours, is cooled to room temperature in retort furnace; Regrinding and mix after, in retort furnace 830 ℃ of following sintering 7 hours, be cooled to mixed at room temperature even red luminescent phosphor: NaSrLa
0.5Eu
0.5[TeO
6].
Its main structure properties, excitation spectrum and luminescent spectrum are similar with embodiment 1.
Claims (10)
1. europium ion Eu
3+The red luminescent phosphor of activated tellurate is characterized in that: its chemical formula does
NMR 1-xEu
x[TeO
6], wherein,
NBe lithium ion Li
+, sodium ion Na
+In a kind of,
MBe calcium ion Ca
2+, barium ion Ba
2+, strontium ion Sr
2+In a kind of,
RBe lanthanum ion La
3+, gadolinium ion Gd
3+, bismuth ion Bi
3+In a kind of;
xBe europium ion Eu
3+The doping molecular fraction, 0.0001≤
x≤1.0.
2. europium ion Eu as claimed in claim 1
3+The preparation method of the red luminescent phosphor of activated tellurate is characterized in that comprising the steps:
(1) presses chemical formula
NMR 1-xEu
x[TeO
6] in the atomic molar ratio, to contain basic metal
NIon, earth alkali metal
MIon, rare earth
RIon, europium ion Eu
3+, tellurium ion Te
6+Compound grind and mix;
NBe lithium ion Li
+, sodium ion Na
+In a kind of,
MBe calcium ion Ca
2+, barium ion Ba
2+, strontium ion Sr
2+In a kind of,
RBe lanthanum ion La
3+, gadolinium ion Gd
3+, bismuth ion Bi
3+In a kind of;
xBe europium ion Eu
3+The doping molecular fraction, 0.0001≤
x≤1.0;
(2) with mixture presintering under air atmosphere of step (1), sintering temperature is 300～750 ℃, and sintering time is 1～10 hour;
(3) behind the mixture naturally cooling with step (2), grind and mix, calcining under air atmosphere, calcining temperature is 750～1000 ℃, calcination time is 1～10 hour, obtains a kind of europium ion Eu
3+Activated tellurate red fluorescence powder.
3. a kind of europium ion Eu according to claim 2
3+The preparation method of the red luminescent phosphor of activated tellurate is characterized in that: the described basic metal that contains
NThe ionic compound,
NBe lithium ion Li
+Compound be one or more the combination in sodium oxide, yellow soda ash, SODIUMNITRATE, sodium hydroxide, the sodium sulfate;
NBe sodium ion Na
+Compound be one or more the combination in Lithium Oxide 98min, Quilonum Retard, lithium nitrate, Lithium Hydroxide MonoHydrate, the Lithium Sulphate.
4. a kind of europium ion Eu according to claim 2
3+The preparation method of the red luminescent phosphor of activated tellurate is characterized in that: the described earth alkali metal that contains
MCompound,
MBe calcium ion Ca
2+Compound be one or more the combination in quicklime, calcium hydroxide, lime carbonate, the nitrocalcite;
MBe barium ion Ba
2+Compound be one or more the combination in barium oxide, hydrated barta, barium carbonate, the nitrate of baryta;
MBe strontium ion Sr
2+Compound be one or more the combination in strontium oxide, strontium hydroxide, Strontium carbonate powder, the strontium nitrate.
5. a kind of europium ion Eu according to claim 2
3+The preparation method of the red luminescent phosphor of activated tellurate is characterized in that: the described rare earth ion that contains
RCompound,
RBe lanthanum ion La
3+Compound be one or both the mixture in lanthanum trioxide, the Lanthanum trinitrate;
RBe gadolinium ion Gd
3+Compound be one or both the mixture in gadolinium sesquioxide, the Gadolinium trinitrate;
RBe bismuth ion Bi
3+Compound be one or both the mixture in bismuth oxide, the Bismuth trinitrate.
6. a kind of europium ion Eu according to claim 2
3+The preparation method of the red luminescent phosphor of activated tellurate is characterized in that: the described tellurium ion Te that contains
6+Compound be tellurium trioxide.
7. a kind of europium ion Eu according to claim 2
3+The preparation method of the red luminescent phosphor of activated tellurate is characterized in that: the described europium ion Eu that contains
3+Compound be a kind of or their combination in europium sesquioxide, europium, the europium nitrate.
8. a kind of europium ion Eu according to claim 2
3+The preparation method of the red luminescent phosphor of activated tellurate is characterized in that: the described pre-burning of step (2) is become 1～3 time, and sintering temperature is 350～600 ℃, and sintering time is 3～5 hours.
9. a kind of europium ion Eu according to claim 2
3+The preparation method of the red luminescent phosphor of activated tellurate is characterized in that: the described calcining temperature of step (3) is 800～950 ℃, and calcination time is 5～8 hours.
10. a kind of europium ion Eu as claimed in claim 1
3+The application of the red luminescent phosphor of activated tellurate is characterized in that: with the blueness and the green emitting phosphor of its matched with proper, apply and be packaged in outside ultraviolet and the blue-ray LED diode chip for backlight unit, preparation White-light LED illumination device.
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103788953A (en) * | 2014-02-28 | 2014-05-14 | 淮南师范学院 | Europium-activated tellurate red phosphor and preparation method thereof |
| CN104694127A (en) * | 2014-12-25 | 2015-06-10 | 陕西科技大学 | Red fluorescent powder and preparation method thereof |
| CN107503159A (en) * | 2017-07-20 | 2017-12-22 | 浙江工业职业技术学院 | A kind of preparation method of salmon pink warning garment material |
| CN114540031A (en) * | 2022-02-21 | 2022-05-27 | 南昌大学 | Mn (manganese)4+Ion-doped tellurate red fluorescent powder and preparation method and application thereof |
| CN115710507A (en) * | 2022-11-17 | 2023-02-24 | 广东工业大学 | Tellurate near-infrared fluorescent material and preparation method and application thereof |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103788953A (en) * | 2014-02-28 | 2014-05-14 | 淮南师范学院 | Europium-activated tellurate red phosphor and preparation method thereof |
| CN103788953B (en) * | 2014-02-28 | 2016-02-24 | 淮南师范学院 | A kind of europkium-activated tellurate red fluorescence powder and preparation method thereof |
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| CN115710507B (en) * | 2022-11-17 | 2023-10-31 | 广东工业大学 | Tellurate near infrared fluorescent material and preparation method and application thereof |
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Application publication date: 20120912 |