CN102559186A - Infrared up-conversion fluorescent powder and preparation method thereof - Google Patents

Infrared up-conversion fluorescent powder and preparation method thereof Download PDF

Info

Publication number
CN102559186A
CN102559186A CN2010106024980A CN201010602498A CN102559186A CN 102559186 A CN102559186 A CN 102559186A CN 2010106024980 A CN2010106024980 A CN 2010106024980A CN 201010602498 A CN201010602498 A CN 201010602498A CN 102559186 A CN102559186 A CN 102559186A
Authority
CN
China
Prior art keywords
rare earth
infrared
preparation
fluorescent powder
product
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
Application number
CN2010106024980A
Other languages
Chinese (zh)
Other versions
CN102559186B (en
Inventor
陈雪梅
李丽平
高玮
李鹏
马新胜
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Shanghai Huaming Hi Tech Group Co Ltd
Original Assignee
Shanghai Huaming Hi Tech Group Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Shanghai Huaming Hi Tech Group Co Ltd filed Critical Shanghai Huaming Hi Tech Group Co Ltd
Priority to CN201010602498.0A priority Critical patent/CN102559186B/en
Publication of CN102559186A publication Critical patent/CN102559186A/en
Application granted granted Critical
Publication of CN102559186B publication Critical patent/CN102559186B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Landscapes

  • Luminescent Compositions (AREA)

Abstract

The invention provides infrared up-conversion fluorescent powder and a preparation method thereof. The infrared up-conversion fluorescent powder is characterized in that the system of red up-conversion fluorescent powder is NaY1-x-yYbxEryF4, wherein x is not smaller than 0.1 but is not greater than 0.25, and y is not smaller than 0.01 but is not greater than 0.08. A target product of the infrared up-conversion fluorescent powder is spherical, the monocrystal particle size is between 200nm and 400nm, bright macroscopic green light exists under the irradiation of infrared light of 980nm, and the luminous intensity is 1.36 times that of a product obtained by a traditional like technology. Compared with the prior art, the mixture ratio of the components of the product can be accurately controlled, the appearance of the particles of the product is regular and is spherical, the synthesizing process is simple, and the equipment cost is low; and the infrared up-conversion fluorescent powder has stable quality and strong repeatability and is suitable for large-scale production.

Description

Infrared up-conversion phosphor and preparation method thereof
Technical field
The present invention relates to a kind of infrared up-conversion phosphor and preparation method thereof, or rather, is up-conversion phosphor of the infrared ray excited macroscopic green glow of emitting bright down of a kind of 980nm and preparation method thereof.
Background technology
Infrared up-conversion luminous material is a kind of material that infrared light is converted into visible light.The photon energy that is characterized in launching is greater than the photon energy that absorbs.Infrared up-conversion luminous material has wide practical use at night vision system material, infrared quantum counter, photodiode, 3 D stereo demonstration, biological fluorescent labelling material, aspect such as false proof.The infrared up-conversion luminous material that uses at present mainly is the complex fluoride of rare-earth ion activated rare earth fluorine, rare earth metal and earth alkali metal, and their phonon energy is low, has reduced the loss of radiationless transition, therefore has higher last efficiency of conversion.In converting luminescent material of fluoride, NaYF 4: Yb, Er be because its luminous efficiency is high, good stability and being used widely.
The main preparation methods of up-conversion luminescent material has high temperature solid-state method, hydrothermal method, the precipitator method.
High temperature solid-state method prepares NaYF 4: Yb, Er are through rare earth fluorine and Sodium Silicofluoride 98min reaction, under protection of inert gas, carry out.Thereby cause environmental pollution because rare earth fluorine complicated process of preparation and its produce a large amount of silicon tetrafluoride toxic gases with Sodium Silicofluoride 98min in the process of reaction, therefore, improve its preparation method is the direction that people study always.
Wherein: hydrothermal method is low because of its synthesis temperature, mild condition and receive extensive concern.
CN 101195747A discloses a kind of red up-conversion phosphor NaY that under 180～220 ℃ hydrothermal condition, prepares 1-x-y-z(Yb xHo yCe z) F 4Method since the preparation process in the reaction be under high pressure to carry out, the cycle is longer, and the luminous efficiency of the luminescent material of preparing is lower, therefore, this method is not suitable for large-scale industrial production.
CN 101260561A has announced a kind of hydrothermal growing method at the light activated up-conversion fluoride crystal of near infrared, and complexing agent disperses and coating through adding, and obtains the NaYF of six side's phases 4Host crystal.Because added complexing agent among this preparation method, cost is higher, therefore be unfavorable for industrial production.
The precipitator method are convenient because of it, during joint, the sample purity advantages of higher of preparation becomes method commonly used in the luminescent material preparation.
CN101289616A has announced that a kind of is that solvent prepares the water-soluble conversion NaYF that goes up with the USP Kosher 4: Er 3+, Yb 3+Nanocrystalline method is with NaF, EDTA and Er (NO 3) 3, Yb (NO 3) 3, Y (NO 3) 3USP Kosher solution mix, at 200～297 ℃ of reaction 1～3h, after its product drying with 980nm when infrared ray excited, the visible up-conversion fluorescence that becomes clear of naked eyes.This preparation method has used organic solvent and complexing agent, and cost is higher.
CN 101020824A discloses a kind of infrared ray excited complex fluoride up-conversion luminescent material and preparation method thereof, and chemical constitution formula is NaY 1-x-yYb xRe yF 4, 0.05≤x≤0.3,0.001≤y≤0.1 wherein, Re is Er or Tm.With NaF is precipitation agent, in the aqueous solution, generates NaY with rare earths salt 1-x-yYb xRe yF 4, in protective atmosphere, to handle 1～10 hour in 500～700 ℃ then, cooling promptly obtains said luminescent material.Because the solubleness of NaF in water is smaller, cause producing in this preparing method's production process a large amount of waste water.And the sodium ion used of this method is a large amount of excessive, and unfavorable to the thing phase purity of product, background impurities peak at random appears in the X diffracting spectrum of product, causes the luminous intensity of product still on the low side.
Therefore the technology of preparing of existing infrared up-conversion phosphor, condition are relatively harsher, in the preparation process, add organic solvent or complexing agent, and cost is higher, is not suitable for industrial production.
Summary of the invention
The object of the present invention is to provide a kind of infrared up-conversion phosphor and preparation method thereof, to overcome defectives such as working condition harshness that prior art exists, cost height.
Infrared up-conversion phosphor of the present invention, at the infrared ray excited up-conversion phosphor that sends bright macroscopic green glow down of 980nm, characteristic is that the system of red up-conversion phosphor is NaY for a kind of 1-x-yYb xEr yF 4
Wherein: 0.1≤x≤0.25,0.01≤y≤0.08.
The preparation method of red up-conversion phosphor of the present invention comprises the steps:
1) according to chemical formula NaY 1-x-yYb xEr yF 4, 0.1≤x≤0.25,0.01≤y≤0.08, preparation mixed solution of rare earth A;
Rare earth ion source in the described mixed solution of rare earth is selected from the soluble salt of nitrate salt or the muriate and so on of yttrium, ytterbium and erbium, or makes it to be converted into oxide compound, oxyhydroxide or the carbonate cpds of yttrium, ytterbium and the erbium of soluble salt through nitric acid or hydrochloric acid; The soluble salt of preferred yttrium, ytterbium and erbium;
Said mixed solution of rare earth A middle-weight rare earths ionic total concn is 0.5～1.0mol/L;
2) press trivalent rare earth fluorochemical chemical formula ReF 3The metering ratio, add NH to mixed solution of rare earth A 4F solution, precipitin reaction gets suspension-s;
Wherein: Re is rare earth element y, Yb and Er;
Said NH 4The concentration of F solution is 3～10mol/L;
3) suspension filtered, washing place 60～120 ℃ of down dry 2～12h with filter cake again, get solid B;
4) with solid B and the fusing assistant that contains Na and F, according to N Na/ N Re=0.98～1.10, N F/ N Na>=1.0 mole number metering is than mixing;
The fusing assistant of described Na of containing and F is selected from NH 4F and Na 2CO 3Mixture, NH 4F and NaHCO 3Mixture, NaF or Na 2SiF 6In one or both, preferred NaF;
N wherein NaAnd N FMole number for Na in the fusing assistant and F; N ReBe Y, Yb and Er REE total mole number;
5) step 4) gained mixture is placed specific atmosphere, 300～750 ℃ of following roasting 0.5～6h collect described infrared up-conversion phosphor product then.
Said specific atmosphere is H 2, N 2Or H 2And N 2Mixed gas or carbon reducing agent atmosphere; Preferred atmosphere is N 2
The preparation method of a kind of infrared up-conversion luminous material provided by the invention; The target product that is obtained is for spherical; The single crystal particle size has bright macroscopic green glow under the irradiation of 980nm infrared light between 200～400nm, luminous intensity is 1.36 times of existing similar technological products therefrom.Compared with prior art, beneficial effect of the present invention: the set of dispense ratio of product can accurately be controlled, and product granule-morphology rule is spherical in shape; Synthesis technique is simple, and cost of equipment is low; Steady quality, repeatability is strong, is suitable for scale operation.
Description of drawings
Fig. 1 is the X-ray diffractogram of the product of embodiment 1.
Fig. 2 is TEM (transmission electron microscope) photo of the product of embodiment 1.
Fig. 3 is that product and the product in Comparative Examples switching emission spectrogram: a under the 980nm laser excitation of embodiment 3 is the last convert light spectrogram of embodiment 3 preparing products, and b is the last convert light spectrogram of Comparative Examples preparing product.
Embodiment
Embodiment 1
With the rare earth oxide is raw material, takes by weighing 89.20g Y 2O 3, 39.41g Yb 2O 3, 1.91g Er 2O 3Adding in the 200ml deionized water, does the back that stirs add the 295.3g weight concentration and does? The nitric acid of %, insulation are at 70 ℃, and stirring is dissolved rare earth oxide fully, adds deionized water, is mixed with the 1000ml rare earth nitrate solution;
Get 112.0g NH 4F adds the 300ml deionized water makes its dissolving form NH 4F solution is added drop-wise to it in rare earth nitrate solution of continuous stirring then, leaves standstill, filters, washs after dripping, and dry 12h under 60 ℃ gets mixture, in N after fully grinding with 41.99g NaF then 2The following 500 ℃ of thermal treatment 1h of atmosphere, the cooling after pulverize the invention product:
NaY 0.79Yb 0.20Er 0.01F 4。
X-ray diffractogram is seen Fig. 1.TEM (transmission electron microscope) photo is seen Fig. 2.
Embodiment 2
With the rare earth nitrate is raw material, takes by weighing 200.68g Y (NO respectively 3) 3, 89.76g Yb (NO 3) 3, 7.07g Er (NO 3) 3Add deionized water, be mixed with into the 1600ml rare earth nitrate solution.Get 112.0gNH 4F adds makes its dissolving form NH in the 500ml deionized water 4F solution is added drop-wise to it in rare earth nitrate solution of continuous stirring then, and leave standstill, filter, wash after dripping, and in 120 ℃ of following dry 2h, then with 94.03g Na 2SiF 6Comminution by gas stream gets mixture, in H 2The following 300 ℃ of thermal treatment 6h of atmosphere, the cooling after pulverize the invention product:
NaY 0.73Yb 0.25Er 0.02F 4。
Embodiment 3
With the rare earth carbonate is raw material, takes by weighing 159.24g Y respectively 2(CO 3) 3, 26.31g Yb 2(CO 3) 3, 2.57g Er 2(CO 3) 3Add the 200ml deionized water, the back that stirs adds the 295.3g concentrated nitric acid, and dissolving fully adds deionized water, is mixed with the 2000ml rare earth nitrate solution.Get 113.0g NH 4F adds the 300ml deionized water makes its dissolving form NH 4F solution is added drop-wise to it in rare earth nitrate solution of continuous stirring then, and leave standstill, filter, wash after dripping, and in 80 ℃ of following dry 6h, then with 37.04g NH 4F, 84.01g NaHCO 3Behind ball milling, get mixture, in N 2The following 600 ℃ of thermal treatment 1h of atmosphere, the cooling after pulverize the invention product: NaY 0.89Yb 0.10Er 0.01F 4
Embodiment 4
With the rare-earth hydroxide is raw material, takes by weighing 100.75g Y (OH) respectively 3, 44.81g Yb (OH) 3, 17.46g Er (OH) 3Add in the 200ml deionized water, the back that stirs adds the 295.3g concentrated nitric acid, and dissolving adds deionized water fully, is mixed with the 1500ml rare earth nitrate solution.Get 123.0g NH 4F adds makes its dissolving form NH in the 1000ml deionized water 4F solution; Then it is added drop-wise in the rare earth nitrate solution of continuous stirring; Leave standstill after dripping, filter, wash, and, get mixture after fully grinding with 41.99g NaF then in 100 ℃ of following dry 4h; 750 ℃ of thermal treatment 0.5h under the air atmosphere that carbon dust provides, the cooling after pulverize the invention product: NaY 0.72Yb 0.20Er 0.08F 4
Embodiment 5
With the rare earth chloride is raw material, takes by weighing 136.69g YCl respectively 3, 69.85g YbCl 3, 13.68gErCl 3Add in the deionized water, be mixed with the 1200ml rare-earth chloride solution.Getting in the 113.0g NH4F adding 600ml deionized water makes its dissolving form NH 4F solution is added drop-wise to it in rare-earth chloride solution of continuous stirring then, and leave standstill, filter, wash after dripping, and in 120 ℃ of following dry 2h, then with 94.03g Na 2SiF 6Get mixture after fully grinding, in H 2The following 300 ℃ of thermal treatment 6h of atmosphere, the cooling after pulverize the invention product:
NaY 0.70Yb 0.25Er 0.05F 4。
Comparative Examples 1
According to the described preparation method of patent CN 101020824A, preparation is formed identical up-conversion with the embodiment of the invention 3.Take by weighing 15.92g Y respectively 2(CO 3) 3, 2.63g Yb 2(CO 3) 3, 0.26gEr 2(CO 3) 3Add in the 100ml deionized water, the back that stirs adds an amount of concentrated nitric acid to dissolving fully, forms rare earth nitrate solution; Get 4.20g NaF and be dissolved in and obtain the NaF aqueous solution in the 300ml deionized water, rare-earth ion solution is added drop-wise in the NaF solution of continuous stirring gradually forms deposition then, leave standstill after continuing to stir for some time; Outwell supernatant; Filter, wash throw out, throw out is in 120 ℃ of dry 2h down, again at N 2The following 600 ℃ of thermal treatment 1h of atmosphere, cool off, pulverize, wash, dry the contrast product:
NaY 0.89Yb 0.10Er 0.01F 4。
Adopting JEM-1200EX II type transmission electron microscope (TEM) to observe particle diameter, the pattern of product, is excitaton source with 980nm LD laser apparatus, the up-conversion luminescence of Fluorolog-3-P type ultraviolet-visible-near-infrared fluorescent spectrophotometer product.The single crystal particle size of embodiment 1 has bright macroscopic green glow under the irradiation of 980nm infrared light between 200～400nm, luminous intensity is 1.33 times of comparative example 1.The single crystal particle size of embodiment 2 has bright macroscopic green glow under the irradiation of 980nm infrared light between 200～350nm, luminous intensity is 1.28 times of comparative example 1.The single crystal particle size of embodiment 3 has bright macroscopic green glow under the irradiation of 980nm infrared light between 300～400nm, luminous intensity is 1.36 times of comparative example 1.The single crystal particle size of embodiment 4 has bright macroscopic green glow under the irradiation of 980nm infrared light between 250～400nm, luminous intensity is 1.21 times of comparative example 1.The single crystal particle size of embodiment 5 has bright macroscopic green glow under the irradiation of 980nm infrared light between 200～400nm, luminous intensity is 1.18 times of comparative example 1.

Claims (8)

1. infrared up-conversion phosphor is characterized in that, the system that is red up-conversion phosphor is NaY 1-x-yYb xEr yF 4Wherein: 0.1≤x≤0.25,0.01≤y≤0.08.
2. the preparation method of red up-conversion phosphor according to claim 1 comprises the steps:
1) according to chemical formula NaY 1-x-yYb xEr yF 4, 0.1≤x≤0.25,0.01≤y≤0.08, preparation mixed solution of rare earth A;
Rare earth ion source in the described mixed solution of rare earth is selected from the soluble salt of nitrate salt or the muriate and so on of yttrium, ytterbium and erbium, or makes it to be converted into oxide compound, oxyhydroxide or the carbonate cpds of yttrium, ytterbium and the erbium of soluble salt through nitric acid or hydrochloric acid;
2) press trivalent rare earth fluorochemical chemical formula ReF 3The metering ratio, add NH to mixed solution of rare earth A 4F solution, precipitin reaction gets suspension-s;
Wherein: Re is rare earth element y, Yb and Er;
3) suspension filtered, washing place 60～120 ℃ of down dry 2～12h with filter cake again, get solid B;
4) with solid B and the fusing assistant that contains Na and F, according to N Na/ N Re=0.98～1.10, N F/ N Na>=1.0 mole number metering is than mixing;
5) step 4) gained mixture is placed specific atmosphere, 300～750 ℃ of following roasting 0.5～6h collect described infrared up-conversion phosphor product then.
3. method according to claim 2 is characterized in that, the rare earth ion source in the described mixed solution of rare earth is the soluble salt of yttrium, ytterbium and erbium.
4. method according to claim 3 is characterized in that, said mixed solution of rare earth A middle-weight rare earths ionic total concn is 0.5～1.0mol/L.
5. method according to claim 2 is characterized in that, said NH 4The concentration of F solution is 3～10mol/L.
6. method according to claim 2 is characterized in that the fusing assistant of described Na of containing and F is selected from NH 4F and Na 2CO 3Mixture, NH 4F and NaHCO 3Mixture, NaF or Na 2SiF 6In one or both.
7. method according to claim 2 is characterized in that, the fusing assistant of described Na of containing and F is NaF.
8. according to each described method of claim 2～7, it is characterized in that said specific atmosphere is H 2, N 2Or H 2And N 2Mixed gas or carbon reducing agent atmosphere.
CN201010602498.0A 2010-12-23 2010-12-23 Infrared up-conversion fluorescent powder and preparation method thereof Active CN102559186B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201010602498.0A CN102559186B (en) 2010-12-23 2010-12-23 Infrared up-conversion fluorescent powder and preparation method thereof

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201010602498.0A CN102559186B (en) 2010-12-23 2010-12-23 Infrared up-conversion fluorescent powder and preparation method thereof

Publications (2)

Publication Number Publication Date
CN102559186A true CN102559186A (en) 2012-07-11
CN102559186B CN102559186B (en) 2014-07-30

Family

ID=46405824

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201010602498.0A Active CN102559186B (en) 2010-12-23 2010-12-23 Infrared up-conversion fluorescent powder and preparation method thereof

Country Status (1)

Country Link
CN (1) CN102559186B (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102585829A (en) * 2011-12-15 2012-07-18 上海华明高纳稀土新材料有限公司 Infrared up-conversion rare earth luminescent material and preparation method thereof
CN105112056A (en) * 2015-09-16 2015-12-02 福州大学 Preparation method for Er<3+>-Yb<3+>-co-doped NaYF4 fluorescent powder
CN106947470A (en) * 2017-03-31 2017-07-14 英特美光电（苏州）有限公司 LED and remote fluorescence device small size salt a kind of novel processing step

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101020824A (en) * 2007-03-12 2007-08-22 中国科学院长春应用化学研究所 Infrared ray excited up-conversion luminescent material and its prepn
CN101289616A (en) * 2008-05-30 2008-10-22 东北电力大学 Process for preparing water-soluble up-conversion NaYF4:Er<3+>,Yb<3+> nano-crystalline using glycyl alcohol as solvent
CN101575515A (en) * 2009-06-08 2009-11-11 北京工商大学 Method for preparing NaYF4 type up-conversion materials

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101020824A (en) * 2007-03-12 2007-08-22 中国科学院长春应用化学研究所 Infrared ray excited up-conversion luminescent material and its prepn
CN101289616A (en) * 2008-05-30 2008-10-22 东北电力大学 Process for preparing water-soluble up-conversion NaYF4:Er<3+>,Yb<3+> nano-crystalline using glycyl alcohol as solvent
CN101575515A (en) * 2009-06-08 2009-11-11 北京工商大学 Method for preparing NaYF4 type up-conversion materials

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
孙家跃等: "共沉淀法制备NaYF4:Tm3+,Yb3+的上转换发光", 《发光学报》, vol. 30, no. 2, 30 April 2009 (2009-04-30) *

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102585829A (en) * 2011-12-15 2012-07-18 上海华明高纳稀土新材料有限公司 Infrared up-conversion rare earth luminescent material and preparation method thereof
CN105112056A (en) * 2015-09-16 2015-12-02 福州大学 Preparation method for Er<3+>-Yb<3+>-co-doped NaYF4 fluorescent powder
CN105112056B (en) * 2015-09-16 2017-09-22 福州大学 A kind of Er3+, Yb3+It is co-doped with NaYF4The preparation method of fluorescent material
CN106947470A (en) * 2017-03-31 2017-07-14 英特美光电（苏州）有限公司 LED and remote fluorescence device small size salt a kind of novel processing step

Also Published As

Publication number Publication date
CN102559186B (en) 2014-07-30

Similar Documents

Publication Publication Date Title
Zeng et al. Synthesis of complex rare earth fluoride nanocrystal phosphors
Sarakovskis et al. Upconversion luminescence in erbium doped transparent oxyfluoride glass ceramics containing hexagonal NaYF4 nanocrystals
Yadav et al. Enhanced white light emission from a Tm 3+/Yb 3+/Ho 3+ co-doped Na 4 ZnW 3 O 12 nano-crystalline phosphor via Li+ doping
Zhai et al. Morphology-controlled synthesis and luminescence properties of green-emitting NaGd (WO4) 2: Tb3+ phosphors excited by n-UV excitation
Pavitra et al. Pump power induced tunable upconversion emissions from Er 3+/Tm 3+/Yb 3+ ions tri-doped SrY 2 O 4 nanocrystalline phosphors
Li et al. Synthesis and upconversion luminescence of Lu2O3: Yb3+, Tm3+ nanocrystals
Jiang et al. Citric acid-assisted phase controlled synthesis of NaYF4: Yb3+, Tm3+ crystals and their intense ultraviolet upconversion emissions
Lü et al. The two-photon excitation of SiO2-coated Y2O3: Eu3+ nanoparticles by a near-infrared femtosecond laser
Li et al. Rapid, morphology-controllable synthesis of GdOF: Ln 3+(Ln= Eu, Tb) crystals with multicolor-tunable luminescence properties
Pang et al. Upconversion luminescence properties of Er3+–Bi3+ codoped CaSnO3 nanocrystals with perovskite structure
CN102559186B (en) Infrared up-conversion fluorescent powder and preparation method thereof
CN100519697C (en) Infrared ray excited up-conversion luminescent material preparing method
Li et al. Synthesis of an efficient lanthanide doped glass-ceramic based near-infrared photocatalyst by a completely waterless solid-state reaction method
CN102337135A (en) Blue-light infrared up-conversion luminescent material and preparation method thereof
Wu et al. Improved photoluminescence behavior of Eu3+-activated Ca5 (PO4) 3F red nanophosphor by adding Li+, Au3+, and Bi3+ as co-dopants
Zhao et al. Ionic liquid-assisted synthesis of Yb3+-Tm3+ codoped Y7O6F9 petal shaped microcrystals with enhanced upconversion emission
Wei et al. Hydrothermal synthesis and tunable luminescence of NaBaPO4: Eu2+/Tb3+ phosphors
CN103849401B (en) Eu 3+ion doping gadolinium fluoride/controllable luminous powder, preparation method thereof of gadolinium fluoride sodium crystalline phase
CN102585829A (en) Infrared up-conversion rare earth luminescent material and preparation method thereof
Liu et al. Facile synthesis and multicolor luminescence properties of Gd4O3F6: Ln3+ (Ln= Eu, Tb, Dy, Sm, Ho, Tm, Yb/Er, Yb/Ho) microcrystals
Qiang et al. The crystal structure and upconversion properties of Yb 3+, Er 3+/Ho 3+ codoped BaLiF 3 microcrystals with different morphologies
Sun et al. Controllable multicolor upconversion luminescence of lanthanide doped NaGdF4 nanocrystals through single laser excitation at 980 nm
He et al. High-energy organic group-induced spectrally pure upconversion emission in novel zirconate-/hafnate-based nanocrystals
Huang et al. Synthesis of Yb3+/Er3+ co‐dopants sodium yttrium fluoride up‐conversion fluorescence materials
JP5867924B2 (en) Phosphor and method for producing the same

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