CN104178161A - Samarium- ytterbium- co-doped rare earth gallate up-conversion luminescent materials, and preparing method and applications thereof - Google Patents
Samarium- ytterbium- co-doped rare earth gallate up-conversion luminescent materials, and preparing method and applications thereof Download PDFInfo
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Abstract
Samarium- ytterbium- co-doped rare earth gallate up-conversion luminescent materials are provided. The general chemical formula of the up-conversion luminescent materials is MeGaO3:xTm<3+>,yYb<3+>, wherein the x is 0.01-0.08, the y is 0.01-0.06, and the Me is one of yttrium, lanthanum, gadolinium and lutetium. In a photoluminescence spectrum of the up-conversion luminescent material, the excitation wavelength of the up-conversion luminescent material is 578 nm, and an obtained luminescence peak at 475 nm is formed by transition radiation from the 1G4 to the 3H6 of the Tm<3+>. The up-conversion luminescent materials can be adopted as blue luminescent materials. A preparing method of the up-conversion luminescent materials and an organic light emitting diode adopting the up-conversion luminescent materials are also provided.
Description
Technical field
The present invention relates to a kind of samarium ytterbium codoped rare earth gallate up-conversion luminescent material, preparation method and Organic Light Emitting Diode.
Background technology
Organic Light Emitting Diode (OLED) because unit construction is simple, the characteristic such as cheap, the luminous of production cost, reaction times be short, flexible, apply widely and obtained the utmost point.But owing to obtaining at present, the OLED blue light material of stability and high efficiency is more difficult, has limited greatly the development of white light OLED device and light source industry.
Upconverting fluorescent material can be launched visible ray under long wave (as infrared) radiation excitation, even UV-light, is with a wide range of applications in fields such as optical fiber communication technology, fibre amplifier, 3 D stereo demonstration, biomolecules fluorescence labelling, infrared detectives.But, can be by infrared, the long-wave radiations such as red-green glow inspire the samarium ytterbium codoped rare earth gallate up-conversion luminescent material of blue emission, have not yet to see report.
Summary of the invention
Based on this, being necessary to provide a kind of can be inspired samarium ytterbium codoped rare earth gallate up-conversion luminescent material, the preparation method of blue light and be used the Organic Light Emitting Diode of this samarium ytterbium codoped rare earth gallate up-conversion luminescent material by long-wave radiation.
A kind of samarium ytterbium codoped rare earth gallate up-conversion luminescent material, has following chemical formula MeGaO
3: xTm
3+, yYb
3+, wherein, x is that 0.01～0.08, y is that 0.01～0.06, Me is yttrium, lanthanum element, the one in gadolinium element and lutetium element.
X is that 0.04, y is 0.03.
A preparation method for samarium ytterbium codoped rare earth gallate up-conversion luminescent material, comprises the following steps: according to MeGaO
3: xTm
3+, yYb
3+the stoichiometric ratio of each element takes Me
2o
3, Ga
2o
3, Tm
2o
3and Yb
2o
3powder, wherein, x is that 0.01～0.08, y is that 0.01～0.06, Me is yttrium, lanthanum element, the one in gadolinium element and lutetium element;
The powder taking is mixed to be dissolved in and in acidic solution, carry out crystallization treatment and obtain crystallisate;
Crystallisate is dissolved in solvent, then add ammoniacal liquor to regulate pH value to be 1～6, to obtain mixing solutions;
Described mixing solutions is transferred in the stainless steel cauldron of tetrafluoroethylene lining, at 150 DEG C～500 DEG C, be incubated 2 hours～10 hours, be precipitated thing, after being adopted to washings washing, the throw out obtaining is dried, then by dried throw out 800 DEG C～1000 DEG C calcinations 0.5 hour～5 hours, obtaining chemical general formula is MeGaO
3: xTm
3+, yYb
3+samarium ytterbium codoped rare earth gallate up-conversion luminescent material.
X is that 0.04, y is 0.03.
Described mixing solutions is transferred in the stainless steel cauldron of tetrafluoroethylene lining, at 300 DEG C, is incubated 3 hours.
Described crystallisate is dissolved in solvent, wherein said solvent is the mixing solutions of distilled water or distilled water and dehydrated alcohol.
Described acidic solution is nitric acid, sulfuric acid or hydrochloric acid.
Described pH value is 5.
Described washings is distilled water and dehydrated alcohol.
A kind of Organic Light Emitting Diode, comprise the substrate, negative electrode, organic luminous layer, anode and the transparent encapsulated layer that stack gradually, in described transparent encapsulated layer, doped with samarium ytterbium codoped rare earth gallate up-conversion luminescent material, the chemical formula of this samarium ytterbium codoped rare earth gallate up-conversion luminescent material is MeGaO
3: xTm
3+, yYb
3+, wherein, x is that 0.01～0.08, y is that 0.01～0.06, Me is yttrium, lanthanum element, the one in gadolinium element and lutetium element.
Hydrothermal method mild condition, the synthesis temperature of above-mentioned samarium ytterbium codoped rare earth gallate up-conversion luminescent material are low more easy to control, and granularity and the pattern of product are controlled, the powder complete crystallization of preparation, good dispersity, cost is lower, produces comparatively environmental protection in simultaneous reactions process without the three wastes; In the photoluminescence spectra of the samarium ytterbium codoped rare earth gallate up-conversion luminescent material of preparation, the excitation wavelength of samarium ytterbium codoped rare earth gallate up-conversion luminescent material is 578nm, and the glow peak of the 475nm obtaining, is Tm
3+ion
1g
4→
3h
6transition radiation luminous, can be used as blue light emitting material.
Brief description of the drawings
Fig. 1 is the structural representation of the Organic Light Emitting Diode of an embodiment.
Fig. 2 is the photoluminescence spectrogram of the samarium ytterbium codoped rare earth gallate up-conversion luminescent material prepared of embodiment 1.
Fig. 3 is the XRD spectra of the samarium ytterbium codoped rare earth gallate up-conversion luminescent material prepared of embodiment 1.
Fig. 4 is the spectrogram of the Organic Light Emitting Diode that forms doped with samarium ytterbium codoped rare earth gallate up-conversion luminescent material in the transparent encapsulated layer prepared of embodiment 1.
Embodiment
Below in conjunction with the drawings and specific embodiments, samarium ytterbium codoped rare earth gallate up-conversion luminescent material and preparation method thereof is further illustrated.
The samarium ytterbium codoped rare earth gallate up-conversion luminescent material of one embodiment, its chemical formula is MeGaO
3: xTm
3+, yYb
3+, wherein, x is that 0.01～0.08, y is that 0.01～0.06, Me is yttrium, lanthanum element, the one in gadolinium element and lutetium element.
Preferably, x is that 0.04, y is 0.03.
In the photoluminescence spectra of this samarium ytterbium codoped rare earth gallate up-conversion luminescent material, the excitation wavelength of samarium ytterbium codoped rare earth gallate up-conversion luminescent material is 578nm, and the glow peak of the 475nm obtaining, is Tm
3+ion
1g
4→
3h
6transition radiation luminous, can be used as blue light emitting material.
The preparation method of above-mentioned samarium ytterbium codoped rare earth gallate up-conversion luminescent material, comprises the following steps:
Step S11, according to MeGaO
3: xTm
3+, yYb
3+the stoichiometric ratio of each element takes Me
2o
3, Ga
2o
3, Tm
2o
3and Yb
2o
3powder, wherein, x is that 0.01～0.08, y is that 0.01～0.06, Me is yttrium, lanthanum element, the one in gadolinium element and lutetium element.
In this step, preferred, x is that 0.04, y is 0.03.
In this step, preferably, Me
2o
3, Ga
2o
3, Tm
2o
3and Yb
2o
3powder mol ratio is (0.86～0.98): 1:(0.01～0.08): (0.01～0.06);
Step S13, the powder taking is mixed to be dissolved in acidic solution, carry out crystallization treatment and obtain crystallisate in step S11, crystallisate is dissolved in solvent, then add ammoniacal liquor to regulate pH value to be 1～6, to obtain mixing solutions.
In this step, preferred, described fluorine-containing acidic solution comprises nitric acid, sulfuric acid or hydrochloric acid;
In this step, preferred, described solvent is the mixing solutions of distilled water or distilled water and dehydrated alcohol.
Step S15, described mixing solutions is transferred in the stainless steel cauldron of tetrafluoroethylene lining, at 150 DEG C～500 DEG C, be incubated 2 hours～10 hours, be precipitated thing, after being adopted to washings washing, the throw out obtaining is dried, then by dried throw out 800 DEG C～1000 DEG C calcinations 0.5 hour～5 hours, obtaining samarium ytterbium codoped rare earth gallate up-conversion luminescent material chemical general formula is MeGaO
3: xTm
3+, yYb
3+, wherein, x is that 0.01～0.08, y is that 0.01～0.06, Me is yttrium, lanthanum element, the one in gadolinium element and lutetium element.
In this step, preferred, mixing solutions is transferred in the stainless steel cauldron of tetrafluoroethylene lining, at 300 DEG C, is incubated 3 hours.
In this step, preferred, described washings is distilled water and dehydrated alcohol.
In this step, preferred, x is that 0.04, y is 0.03.
Hydrothermal method mild condition, the synthesis temperature of above-mentioned samarium ytterbium codoped rare earth gallate up-conversion luminescent material are low more easy to control, and granularity and the pattern of product are controlled, the powder complete crystallization of preparation, good dispersity, cost is lower, produces comparatively environmental protection in simultaneous reactions process without the three wastes; In the photoluminescence spectra of the samarium ytterbium codoped rare earth gallate up-conversion luminescent material of preparation, the excitation wavelength of samarium ytterbium codoped rare earth gallate up-conversion luminescent material is 578nm, and the glow peak of the 475nm obtaining, is Tm
3+ion
1g
4→
3h
6transition radiation luminous, can be used as blue light emitting material.
Refer to Fig. 1, the Organic Light Emitting Diode 100 of an embodiment, this Organic Light Emitting Diode 100 comprises the substrate 1, negative electrode 2, organic luminous layer 3, transparent anode 4 and the transparent encapsulated layer 5 that stack gradually.In transparent encapsulated layer 5, be dispersed with samarium ytterbium codoped rare earth gallate up-conversion luminescent material 6, the chemical formula of samarium ytterbium codoped rare earth gallate up-conversion luminescent material is MeGaO
3: xTm
3+, yYb
3+, wherein, x is that 0.01～0.08, y is that 0.01～0.06, Me is yttrium, lanthanum element, the one in gadolinium element and lutetium element.
In the transparent encapsulated layer 5 of Organic Light Emitting Diode 100, be dispersed with samarium ytterbium codoped rare earth gallate up-conversion luminescent material 6, samarium ytterbium codoped rare earth gallate up-conversion luminescent material excitation wavelength be 578nm, the glow peak of the 475nm obtaining, is Tm
3+ion
1g
4→
3h
6transition radiation luminous, excite and can launch blue light by red-green glow, after blue light mixes with red-green glow, form the Organic Light Emitting Diode that emits white light.
Be specific embodiment below.
Embodiment 1
Select Y
2o
3, Ga
2o
3, Tm
2o
3and Yb
2o
3powder is 0.93mmol by each component mole number, 1mmol, and 0.04mmol and 0.03mmol mix.After mixing, be dissolved in and in salpeter solution, carry out crystallization treatment and obtain crystallisate, then crystallisate is dissolved in distilled water and in solution and adds ammoniacal liquor, regulating pH value is 5.Then mixing solutions is transferred in the stainless steel cauldron of teflon lined, at 300 DEG C of insulation 3h, be precipitated thing.Again ethanol and distilled water repetitive scrubbing for the throw out that obtains, evaporate to dryness at 100 DEG C, dried throw out is put into retort furnace calcination 3 hours under 950 DEG C of conditions, and obtaining chemical general formula is YGaO
3: 0.04Tm
3+, 0.03Yb
3+up-conversion phosphor.
The substrate 1 that the preparation of Organic Light Emitting Diode stacks gradually uses soda-lime glass, negative electrode 2 to use metal A g layer, organic luminous layer 3 to use Ir (piq)
2(acac) Chinese name two (1-phenyl-isoquinoline 99.9) (methyl ethyl diketones) close iridium (III), transparent anode 4 uses tin indium oxide ITO, and transparent encapsulated layer 5 tetrafluoroethylene.In transparent encapsulated layer 5, be dispersed with samarium ytterbium codoped rare earth gallate up-conversion luminescent material 6, the chemical formula of samarium ytterbium codoped rare earth gallate up-conversion luminescent material is YGaO
3: 0.04Tm
3+, 0.03Yb
3+.
Refer to Fig. 2, Figure 2 shows that the samarium ytterbium codoped rare earth gallate up-conversion luminescent material chemical general formula that this enforcement obtains is YGaO
3: 0.04Tm
3+, 0.03Yb
3+photoluminescence spectra figure.As seen from Figure 2, curve 1 for the excitation wavelength of the samarium ytterbium codoped rare earth gallate up-conversion luminescent material that the present embodiment obtains be 578nm, the glow peak of the 475nm obtaining, is Tm
3+ion
1g
4→
3h
6transition radiation luminous, this samarium ytterbium codoped rare earth gallate up-conversion luminescent material can be used as blue light emitting material, curve 2 is not containing the comparative example of Yb element, has added as seen from the figure the codoped sample of Yb element, has better luminous efficiency.
Refer to Fig. 3, in Fig. 3, curve is the XRD curve of implementing the samarium ytterbium codoped rare earth gallate up-conversion luminescent material of 1 preparation, test comparison standard P DF card.Contrast PDF card, shown in diffraction peak be depicted as the peak crystallization of rare earth gallate, there is not the diffraction peak of doped element and other impurity, illustrate that the product that this preparation method obtains has good crystalline quality.
Fig. 4 is the spectrogram of the Organic Light Emitting Diode that forms doped with samarium ytterbium codoped rare earth gallate up-conversion luminescent material in the transparent encapsulated layer prepared of embodiment 1, and curve 2 is not for adding the contrast of fluorescent material.In figure, can find out, fluorescent material can be excited and can be launched blue light by red-green glow, after blue light mixes with red-green glow, forms and emits white light.
Embodiment 2
Select Y
2o
3, Ga
2o
3, Tm
2o
3and Yb
2o
3powder is 0.98mmol by each component mole number, 1mmol, and 0.01mmol and 0.01mmol mix.After mixing, be dissolved in and in salpeter solution, carry out crystallization treatment and obtain crystallisate, then crystallisate is dissolved in distilled water and in solution and adds ammoniacal liquor, regulating pH value is 1.Then mixing solutions is transferred in the stainless steel cauldron of teflon lined, at 150 DEG C of insulation 2h, be precipitated thing.Again ethanol and distilled water repetitive scrubbing for the throw out that obtains, evaporate to dryness at 100 DEG C, dried throw out is put into retort furnace calcination 2 hours under 800 DEG C of conditions, and obtaining chemical general formula is YGaO
3: 0.01Tm
3+, 0.01Yb
3+up-conversion phosphor.
Embodiment 3
Select Y
2o
3, Ga
2o
3, Tm
2o
3and Yb
2o
3powder is 0.86mmol by each component mole number, 1mmol, and 0.08mmol and 0.06mmol mix.After mixing, in vitriolization solution, carry out crystallization treatment and obtain crystallisate, then crystallisate is dissolved in distilled water and in solution and adds ammoniacal liquor, regulating pH value is 5.Then mixing solutions is transferred in the stainless steel cauldron of teflon lined, at 300 DEG C of insulation 3h, be precipitated thing.Again ethanol and distilled water repetitive scrubbing for the throw out that obtains, evaporate to dryness at 100 DEG C, dried throw out is put into retort furnace calcination 3 hours under 1000 DEG C of conditions, and obtaining chemical general formula is Mg
0.86al
2o
4: 0.08Pr
3+, 0.06Ho
3+up-conversion phosphor.
Embodiment 4
Select La
2o
3, Ga
2o
3, Tm
2o
3and Yb
2o
3powder is 0.93mmol by each component mole number, 1mmol, and 0.04mmol and 0.03mmol mix.After mixing, be dissolved in and in salpeter solution, carry out crystallization treatment and obtain crystallisate, then crystallisate is dissolved in distilled water and in solution and adds ammoniacal liquor, regulating pH value is 5.Then mixing solutions is transferred in the stainless steel cauldron of teflon lined, at 300 DEG C of insulation 3h, be precipitated thing.Again ethanol and distilled water repetitive scrubbing for the throw out that obtains, evaporate to dryness at 100 DEG C, dried throw out is put into retort furnace calcination 3 hours under 950 DEG C of conditions, and obtaining chemical general formula is LaGaO
3: 0.04Tm
3+, 0.03Yb
3+up-conversion phosphor.
Embodiment 5
Select La
2o
3, Ga
2o
3, Tm
2o
3and Yb
2o
3powder is 0.98mmol by each component mole number, 1mmol, and 0.01mmol and 0.01mmol mix.After mixing, be dissolved in and in salpeter solution, carry out crystallization treatment and obtain crystallisate, then crystallisate is dissolved in distilled water and in solution and adds ammoniacal liquor, regulating pH value is 1.Then mixing solutions is transferred in the stainless steel cauldron of teflon lined, at 150 DEG C of insulation 2h, be precipitated thing.Again ethanol and distilled water repetitive scrubbing for the throw out that obtains, evaporate to dryness at 100 DEG C, dried throw out is put into retort furnace calcination 2 hours under 800 DEG C of conditions, and obtaining chemical general formula is LaGaO
3: 0.01Tm
3+, 0.01Yb
3+up-conversion phosphor.
Embodiment 6
Select La
2o
3, Ga
2o
3, Tm
2o
3and Yb
2o
3powder is 0.86mmol by each component mole number, 1mmol, and 0.08mmol and 0.06mmol mix.After mixing, in vitriolization solution, carry out crystallization treatment and obtain crystallisate, then crystallisate is dissolved in distilled water and in solution and adds ammoniacal liquor, regulating pH value is 5.Then mixing solutions is transferred in the stainless steel cauldron of teflon lined, at 300 DEG C of insulation 3h, be precipitated thing.Again ethanol and distilled water repetitive scrubbing for the throw out that obtains, evaporate to dryness at 100 DEG C, dried throw out is put into retort furnace calcination 3 hours under 1000 DEG C of conditions, and obtaining chemical general formula is LaGaO
3: 0.08Tm
3+, 0.06Yb
3+up-conversion phosphor.
Embodiment 7
Select Gd
2o
3, Ga
2o
3, Tm
2o
3and Yb
2o
3powder is 0.93mmol by each component mole number, 1mmol, and 0.04mmol and 0.03mmol mix.After mixing, be dissolved in and in salpeter solution, carry out crystallization treatment and obtain crystallisate, then crystallisate is dissolved in distilled water and in solution and adds ammoniacal liquor, regulating pH value is 5.Then mixing solutions is transferred in the stainless steel cauldron of teflon lined, at 300 DEG C of insulation 3h, be precipitated thing.Again ethanol and distilled water repetitive scrubbing for the throw out that obtains, evaporate to dryness at 100 DEG C, dried throw out is put into retort furnace calcination 3 hours under 950 DEG C of conditions, and obtaining chemical general formula is GdGaO
3: 0.04Tm
3+, 0.03Yb
3+up-conversion phosphor.
Embodiment 8
Select Gd
2o
3, Ga
2o
3, Tm
2o
3and Yb
2o
3powder is 0.98mmol by each component mole number, 1mmol, and 0.01mmol and 0.01mmol mix.After mixing, be dissolved in and in salpeter solution, carry out crystallization treatment and obtain crystallisate, then crystallisate is dissolved in distilled water and in solution and adds ammoniacal liquor, regulating pH value is 1.Then mixing solutions is transferred in the stainless steel cauldron of teflon lined, at 150 DEG C of insulation 2h, be precipitated thing.Again ethanol and distilled water repetitive scrubbing for the throw out that obtains, evaporate to dryness at 100 DEG C, dried throw out is put into retort furnace calcination 2 hours under 800 DEG C of conditions, and obtaining chemical general formula is GdGaO
3: 0.01Tm
3+, 0.01Yb
3+up-conversion phosphor.
Embodiment 9
Select Gd
2o
3, Ga
2o
3, Tm
2o
3and Yb
2o
3powder is 0.86mmol by each component mole number, 1mmol, and 0.08mmol and 0.06mmol mix.After mixing, in vitriolization solution, carry out crystallization treatment and obtain crystallisate, then crystallisate is dissolved in distilled water and in solution and adds ammoniacal liquor, regulating pH value is 5.Then mixing solutions is transferred in the stainless steel cauldron of teflon lined, at 300 DEG C of insulation 3h, be precipitated thing.Again ethanol and distilled water repetitive scrubbing for the throw out that obtains, evaporate to dryness at 100 DEG C, dried throw out is put into retort furnace calcination 3 hours under 1000 DEG C of conditions, and obtaining chemical general formula is GdGaO
3: 0.08Tm
3+, 0.06Yb
3+up-conversion phosphor.
Embodiment 10
Select Lu
2o
3, Ga
2o
3, Tm
2o
3and Yb
2o
3powder is 0.93mmol by each component mole number, 1mmol, and 0.04mmol and 0.03mmol mix.After mixing, be dissolved in and in salpeter solution, carry out crystallization treatment and obtain crystallisate, then crystallisate is dissolved in distilled water and in solution and adds ammoniacal liquor, regulating pH value is 5.Then mixing solutions is transferred in the stainless steel cauldron of teflon lined, at 300 DEG C of insulation 3h, be precipitated thing.Again ethanol and distilled water repetitive scrubbing for the throw out that obtains, evaporate to dryness at 100 DEG C, dried throw out is put into retort furnace calcination 3 hours under 950 DEG C of conditions, and obtaining chemical general formula is LuGaO
3: 0.04Tm
3+, 0.03Yb
3+up-conversion phosphor.
Embodiment 11
Select Lu
2o
3, Ga
2o
3, Tm
2o
3and Yb
2o
3powder is 0.98mmol by each component mole number, 1mmol, and 0.01mmol and 0.01mmol mix.After mixing, be dissolved in and in salpeter solution, carry out crystallization treatment and obtain crystallisate, then crystallisate is dissolved in distilled water and in solution and adds ammoniacal liquor, regulating pH value is 1.Then mixing solutions is transferred in the stainless steel cauldron of teflon lined, at 150 DEG C of insulation 2h, be precipitated thing.Again ethanol and distilled water repetitive scrubbing for the throw out that obtains, evaporate to dryness at 100 DEG C, dried throw out is put into retort furnace calcination 2 hours under 800 DEG C of conditions, and obtaining chemical general formula is LuGaO
3: 0.01Tm
3+, 0.01Yb
3+up-conversion phosphor.
Embodiment 12
Select Lu
2o
3, Ga
2o
3, Tm
2o
3and Yb
2o
3powder is 0.86mmol by each component mole number, 1mmol, and 0.08mmol and 0.06mmol mix.After mixing, in vitriolization solution, carry out crystallization treatment and obtain crystallisate, then crystallisate is dissolved in distilled water and in solution and adds ammoniacal liquor, regulating pH value is 5.Then mixing solutions is transferred in the stainless steel cauldron of teflon lined, at 300 DEG C of insulation 3h, be precipitated thing.Again ethanol and distilled water repetitive scrubbing for the throw out that obtains, evaporate to dryness at 100 DEG C, dried throw out is put into retort furnace calcination 3 hours under 1000 DEG C of conditions, and obtaining chemical general formula is LuGaO
3: 0.08Tm
3+, 0.06Yb
3+up-conversion phosphor.
The above embodiment has only expressed several embodiment of the present invention, and it describes comparatively concrete and detailed, but can not therefore be interpreted as the restriction to the scope of the claims of the present invention.It should be pointed out that for the person of ordinary skill of the art, without departing from the inventive concept of the premise, can also make some distortion and improvement, these all belong to protection scope of the present invention.Therefore, the protection domain of patent of the present invention should be as the criterion with claims.
Claims (10)
1. a samarium ytterbium codoped rare earth gallate up-conversion luminescent material, is characterized in that: have following chemical general formula MeGaO
3: xTm
3+, yYb
3+, wherein, x is that 0.01～0.08, y is that 0.01～0.06, Me is yttrium, lanthanum element, the one in gadolinium element and lutetium element.
2. samarium ytterbium codoped rare earth gallate up-conversion luminescent material according to claim 1, is characterized in that, described x is that 0.04, y is 0.03.
3. a preparation method for samarium ytterbium codoped rare earth gallate up-conversion luminescent material, is characterized in that, comprises the following steps:
According to MeGaO
3: xTm
3+, yYb
3+the stoichiometric ratio of each element takes Me
2o
3, Ga
2o
3, Tm
2o
3and Yb
2o
3powder, wherein, x is that 0.01～0.08, y is that 0.01～0.06, Me is yttrium, lanthanum element, the one in gadolinium element and lutetium element;
The powder taking is mixed and is dissolved in acidic solution, carry out crystallization treatment and obtain crystallisate;
Crystallisate is dissolved in solvent, then add ammoniacal liquor to regulate pH value to be 1～6, to obtain mixing solutions; And
Described mixing solutions is transferred in the stainless steel cauldron of tetrafluoroethylene lining, at 150 DEG C～500 DEG C, be incubated 2 hours～10 hours, be precipitated thing, after being adopted to washings washing, the throw out obtaining is dried, then by dried throw out 800 DEG C～1000 DEG C calcinations 0.5 hour～5 hours, obtaining chemical general formula is MeGaO
3: xTm
3+, yYb
3+samarium ytterbium codoped rare earth gallate up-conversion luminescent material.
4. the preparation method of samarium ytterbium codoped rare earth gallate up-conversion luminescent material according to claim 3, is characterized in that, described x is that 0.04, y is 0.03.
5. the preparation method of samarium ytterbium codoped rare earth gallate up-conversion luminescent material according to claim 3, is characterized in that, described mixing solutions is transferred in the stainless steel cauldron of tetrafluoroethylene lining, at 300 DEG C, is incubated 3 hours.
6. the preparation method of samarium ytterbium codoped rare earth gallate up-conversion luminescent material according to claim 3, is characterized in that, described crystallisate is dissolved in solvent, and wherein said solvent is the mixing solutions of distilled water or distilled water and dehydrated alcohol.
7. the preparation method of samarium ytterbium codoped rare earth gallate up-conversion luminescent material according to claim 3, is characterized in that, described acidic solution is nitric acid, sulfuric acid or hydrochloric acid.
8. the preparation method of samarium ytterbium codoped rare earth gallate up-conversion luminescent material according to claim 3, is characterized in that, described pH value is 5.
9. the preparation method of samarium ytterbium codoped rare earth gallate up-conversion luminescent material according to claim 3, is characterized in that, described washings is distilled water and dehydrated alcohol.
10. an Organic Light Emitting Diode, comprise the substrate, negative electrode, organic luminous layer, anode and the transparent encapsulated layer that stack gradually, it is characterized in that, in described transparent encapsulated layer, doped with samarium ytterbium codoped rare earth gallate up-conversion luminescent material, the chemical general formula of described samarium ytterbium codoped rare earth gallate up-conversion luminescent material is MeGaO
3: xTm
3+, yYb
3+, wherein, x is that 0.01～0.08, y is that 0.01～0.06, Me is yttrium, lanthanum element, the one in gadolinium element and lutetium element.
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| CN201310194873.6A Pending CN104178161A (en) | 2013-05-22 | 2013-05-22 | Samarium- ytterbium- co-doped rare earth gallate up-conversion luminescent materials, and preparing method and applications thereof |
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| CN106118638A (en) * | 2016-06-13 | 2016-11-16 | 郑甘裕 | A kind of additive Mn gallate luminous material, preparation method and applications |
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