CN104212447A - Thulium doped dual alkaline-earth metal aluminosilicate up-conversion luminescent material, preparation method and applications thereof - Google Patents
Thulium doped dual alkaline-earth metal aluminosilicate up-conversion luminescent material, preparation method and applications thereof Download PDFInfo
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Abstract
The invention relates to a thulium doped dual alkaline-earth metal aluminosilicate up-conversion luminescent material, which is represented by a chemical formula: AmB<1-m>Si2O8:xTm3+, wherein the x is in a range of 0.01 to 0.05, m is in a range of 0.1 to 0.9, the A represents a magnesium element, a calcium element, a strontium element, or a barium element; and the B represents a magnesium element, a calcium element, a strontium element, or a barium element. In the photoluminescence spectrum of the thulium doped dual alkaline-earth metal aluminosilicate up-conversion luminescent material, the excitation wavelength of the material is at 796 nm; in the 475 nm wavelength zone, the Tm3+ ion jumps from the 1G4 energy level to the 3H6 energy level and forms a luminescent peak, so the material can be used as a blue light luminescent material. The invention also provided a preparation method of the luminescent material and an organic light emitting diode using the luminescent material.
Description
Technical field
The present invention relates to the doping of a kind of thulium two alkaline earth alumino-silicate 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 is short, flexible, and obtain a very wide range of application.But because the OLED blue light material obtaining stability and high efficiency is at present more difficult, significantly limit the development of white light OLED device and light source industry.
Upconverting fluorescent material can launch visible ray under long wave (as infrared) radiation excitation, even UV-light, is with a wide range of applications in the field such as optical fiber communication technology, fibre amplifier, 3 D stereo display, biomolecules fluorescence labelling, infrared detective.But, can by infrared, the long-wave radiations such as red-green glow inspire the two alkaline earth alumino-silicate up-conversion luminescent material of thulium doping of blue emission, have not yet to see report.
Summary of the invention
Based on this, be necessary to provide a kind of thulium that can inspire blue light by long-wave radiation to adulterate two alkaline earth alumino-silicate up-conversion luminescent material, preparation method and use this thulium to adulterate the Organic Light Emitting Diode of two alkaline earth alumino-silicate up-conversion luminescent material.
The two alkaline earth alumino-silicate up-conversion luminescent material of a kind of thulium doping, its chemical formula is A
mb
1-mal
2si
2o
8: xTm
3+, wherein, x is 0.01 ~ 0.05, m be 0.1 ~ 0.9, A is magnesium elements, calcium constituent, the one in strontium element and barium element, and B is magnesium elements, calcium constituent, the one in strontium element and barium element.
Described x is 0.03, m is 0.5.
A preparation method for the two alkaline earth alumino-silicate up-conversion luminescent material of thulium doping, comprises the following steps:
Step one, according to A
mb
1-mal
2si
2o
8: xTm
3+the stoichiometric ratio of each element takes AO, BO, Al
2o
3, SiO, and Tm
2o
3powder, wherein, x is 0.01 ~ 0.05, m be 0.1 ~ 0.9, A is magnesium elements, calcium constituent, the one in strontium element and barium element, and B is magnesium elements, calcium constituent, the one in strontium element and barium element;
Step 2, the powder taken mixed obtain presoma in described step one;
Step 3, by the calcination 0.5 hour ~ 5 hours at 800 DEG C ~ 1000 DEG C of the presoma in described step 2,
Step 4, the precursor after process in described step 3 is cooled to 100 DEG C ~ 300 DEG C, then be incubated 0.5 hour ~ 3 hours, cool to room temperature, obtaining chemical general formula is A
mb
1-mal
2si
2o
8: xTm
3+the two alkaline earth alumino-silicate up-conversion luminescent material of thulium doping.
Described AO, BO, Al
2o
3, SiO and Tm
2o
3the each component molar of powder is than being (0.1 ~ 0.9): (0.1 ~ 0.9): 1:2:(0.01 ~ 0.05).
Described AO, BO, Al
2o
3, SiO, and Tm
2o
3the each component molar of powder is than being 0.5:0.47:1:2:0.03.
Described in step 2, mixing is that described powder is ground 20 minutes ~ 60 minutes in corundum alms bowl.
By the calcination 3 hours at 950 DEG C of described presoma in step 3.
Cooling temperature in step 4 is 200 DEG C, and soaking time is 2 hours.
A kind of 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, be dispersed with the two alkaline earth alumino-silicate up-conversion luminescent material of thulium doping in described transparent encapsulated layer, the chemical formula of the two alkaline earth alumino-silicate up-conversion luminescent material of described thulium doping is A
mb
1-mal
2si
2o
8: xTm
3+, wherein, x is 0.01 ~ 0.05, m be 0.1 ~ 0.9, A is magnesium elements, calcium constituent, the one in strontium element and barium element, and B is magnesium elements, calcium constituent, the one in strontium element and barium element.
X is 0.03, m is 0.5.
The preparation method of the two alkaline earth alumino-silicate up-conversion luminescent material of above-mentioned thulium doping is comparatively simple, and cost is lower, produces, comparatively environmental protection in simultaneous reactions process without the three wastes; In the photoluminescence spectra of the two alkaline earth alumino-silicate up-conversion luminescent material of thulium doping of preparation, the excitation wavelength of the two alkaline earth alumino-silicate up-conversion luminescent material of thulium doping is 796nm, in 475nm wavelength zone by Tm
3+ion
1g
4→
3h
6transition radiation formed glow peak, can as blue light emitting material.
Accompanying drawing explanation
Fig. 1 is the structural representation of the Organic Light Emitting Diode of an embodiment.
Fig. 2 is the photoluminescence spectrogram of the two alkaline earth alumino-silicate up-conversion luminescent material of thulium doping prepared by embodiment 1.
Fig. 3 is the Raman spectrum of the two alkaline earth alumino-silicate up-conversion luminescent material of thulium doping prepared by embodiment 1.
Fig. 4 is the spectrogram forming the Organic Light Emitting Diode emitted white light in the transparent encapsulated layer of embodiment 1 preparation doped with the two alkaline earth alumino-silicate up-conversion luminescent material of thulium doping.
Embodiment
Below in conjunction with the drawings and specific embodiments, two alkaline earth alumino-silicate up-conversion luminescent material of thulium doping and preparation method thereof is illustrated further.
The two alkaline earth alumino-silicate up-conversion luminescent material of thulium doping of one embodiment, its chemical formula is A
mb
1-mal
2si
2o
8: xTm
3+, wherein, x is 0.01 ~ 0.05, m be 0.1 ~ 0.9, A is magnesium elements, calcium constituent, the one in strontium element and barium element, and B is magnesium elements, calcium constituent, the one in strontium element and barium element.
Preferably, x is 0.03, m is 0.5.
Preferably, elements A and B are two kinds of not identical elements.
The preparation method of the two alkaline earth alumino-silicate up-conversion luminescent material of above-mentioned thulium doping, comprises the following steps:
Step S11, according to A
mb
1-mal
2si
2o
8: xTm
3+the stoichiometric ratio of each element takes AO, BO, Al
2o
3, SiO, and Tm
2o
3powder, wherein, x is 0.01 ~ 0.05, m be 0.1 ~ 0.9, A is magnesium elements, calcium constituent, the one in strontium element and barium element, and B is magnesium elements, calcium constituent, the one in strontium element and barium element.
In this step, described AO, BO, Al
2o
3, SiO and Tm
2o
3the each component molar of powder is than being (0.1 ~ 0.9): (0.1 ~ 0.9): 1:2:(0.01 ~ 0.05).
In this step, described AO, BO, Al
2o
3, SiO and Tm
2o
3the each component molar of powder is than being 0.5:0.47:1:2:0.03.
Step S13, the powder taken mixed obtain presoma in step S11.
In this step, powder is ground in corundum alms bowl the presoma obtaining mixing for 20 minutes ~ 60 minutes, preferred grinding 40 minutes.
Step S15, by presoma calcination 0.5 hour ~ 5 hours at 800 DEG C ~ 1000 DEG C,
Preferably, presoma calcination 3 hours at 950 DEG C.
Step S17, be cooled to 100 DEG C ~ 500 DEG C by after the precursor after process in step S15, then be incubated 0.5 hour ~ 3 hours, cool to room temperature, obtaining chemical general formula is A
mb
1-mal
2si
2o
8: xTm
3+, wherein, x is 0.01 ~ 0.05, m be 0.1 ~ 0.9, A is magnesium elements, calcium constituent, the one in strontium element and barium element, and B is magnesium elements, calcium constituent, the one in strontium element and barium element.
Preferably, the precursor after process in step S15 is cooled to 200 DEG C, then is incubated 2 hours.
The preparation method of the two alkaline earth alumino-silicate up-conversion luminescent material of above-mentioned thulium doping is comparatively simple, and cost is lower, produces, comparatively environmental protection in simultaneous reactions process without the three wastes; In the photoluminescence spectra of the two alkaline earth alumino-silicate up-conversion luminescent material of thulium doping of preparation, the excitation wavelength of the two alkaline earth alumino-silicate up-conversion luminescent material of thulium doping is 796nm, in 475nm wavelength zone by Tm
3+ion
1g
4→
3h
6transition radiation formed glow peak, can 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.Be dispersed with the two alkaline earth alumino-silicate up-conversion luminescent material 6 of thulium doping in transparent encapsulated layer 5, the chemical formula of the two alkaline earth alumino-silicate up-conversion luminescent material of thulium doping is A
mb
1-mal
2si
2o
8: xTm
3+, wherein, x is 0.01 ~ 0.05, m is 0.1 ~ 0.9, A is magnesium elements, calcium constituent, the one in strontium element and barium element, B is magnesium elements, calcium constituent, the one in strontium element and barium element, the organic luminous layer 3 in this device sends red-green glow, part red-green glow excites in transparent encapsulated layer 5 and is dispersed with the two alkaline earth alumino-silicate up-conversion luminescent material 6 of thulium doping and sends blue light, and last redgreenblue just blendes together white light.
Be specific embodiment below.
Embodiment 1
Select purity be 99.99% powder, by MgO, CaO, Al
2o
3, SiO and Tm
2o
3the each component of powder is 0.5mmol by mole number, 0.47mmol, 1mmol, 2mmol and 0.03mmol grinds and makes its Homogeneous phase mixing in 40 minutes in corundum mortar, then calcination 3 hours at 950 DEG C in retort furnace, be then cooled to 200 DEG C to be incubated 2 hours, then furnace cooling takes out to room temperature, obtain block materials, can obtain chemical general formula after pulverizing is Mg
0.5ca
0.47al
2si
2o
8: 0.03Tm
3+up-conversion phosphor.
Process prepared by Organic Light Emitting Diode:
The substrate 1 stacked gradually uses soda-lime glass, negative electrode 2 uses metal A g layer, organic luminous layer 3 uses Ir (piq) 2 (acac) Chinese name (methyl ethyl diketone) closes iridium (III), transparent anode 4 uses tin indium oxide ITO two (1-phenyl-isoquinoline 99.9), and transparent encapsulated layer 5 tetrafluoroethylene.Be dispersed with the two alkaline earth alumino-silicate up-conversion luminescent material 6 of thulium doping in transparent encapsulated layer 5, the chemical formula of the two alkaline earth alumino-silicate up-conversion luminescent material of thulium doping is Mg
0.5ca
0.47al
2si
2o
8: 0.03Tm
3+.
Refer to Fig. 2, Figure 2 shows that the photoluminescence spectra figure of the two alkaline earth alumino-silicate up-conversion luminescent material of thulium doping obtained.As seen from Figure 2, the excitation wavelength of the two alkaline earth alumino-silicate up-conversion luminescent material of thulium doping that the present embodiment obtains is 796nm, in 475nm wavelength zone by Tm
3+ion
1g
4→
3h
6transition radiation form glow peak, the two alkaline earth alumino-silicate up-conversion luminescent material of this thulium doping can be used as blue light emitting material.
Refer to Fig. 3, in Fig. 3, curve is the Raman spectrum of the two alkaline earth alumino-silicate up-conversion luminescent material of thulium doping prepared by enforcement 1, Raman peaks in figure is depicted as two alkaline earth alumino-silicate characteristic peak, there is not the peak of doped element and other impurity, illustrate that doped element and substrate material define good bonding.
Refer to Fig. 4, Fig. 4 curve 1 is the spectrogram forming the Organic Light Emitting Diode emitted white light in transparent encapsulated layer doped with the two alkaline earth alumino-silicate up-conversion luminescent material material of thulium doping, and curve 2 is not doped with the contrast of the two alkaline earth alumino-silicate up-conversion luminescent material material of thulium doping in transparent encapsulated layer.Can find out in figure, up-conversion luminescent material by the red light of long wave, can inspire the blue light of shortwave, forms white light after blue light mixes with ruddiness.
Embodiment 2
Select purity be 99.99% powder, by MgO, CaO, Al
2o
3, SiO and Tm
2o
3the each component of powder is 0.3mmol by mole number, 0.69mmol, 1mmol, 2mmol and 0.01mmol grinds and makes its Homogeneous phase mixing in 20 minutes in corundum mortar, then calcination 3 hours at 800 DEG C in retort furnace, be then cooled to 250 DEG C to be incubated 2 hours, then furnace cooling takes out to room temperature, obtain block materials, can obtain chemical general formula after pulverizing is Mg
0.3ca
0.69al
2si
2o
8: 0.01Tm
3+up-conversion phosphor.
Embodiment 3
Select purity be 99.99% powder, by MgO, SrO, Al
2o
3, SiO and Tm
2o
3the each component of powder is 0.2mmol by mole number, 0.75mmol, 1mmol, 2mmol and 0.05mmol grinds and makes its Homogeneous phase mixing in 60 minutes in corundum mortar, then calcination 3 hours at 1000 DEG C in retort furnace, be then cooled to 250 DEG C to be incubated 2 hours, then furnace cooling takes out to room temperature, obtain block materials, can obtain chemical general formula after pulverizing is Mg
0.2sr
0.75al
2si
2o
8: 0.05Tm
3+up-conversion phosphor.
Embodiment 4
Select purity be 99.99% powder, by MgO, SrO, Al
2o
3, SiO and Tm
2o
3the each component of powder is 0.3mmol by mole number, 0.68mmol, 1mmol, 2mmol and 0.02mmol grinds and makes its Homogeneous phase mixing in 40 minutes in corundum mortar, then calcination 3 hours at 950 DEG C in retort furnace, be then cooled to 250 DEG C to be incubated 2 hours, then furnace cooling takes out to room temperature, obtain block materials, can obtain chemical general formula after pulverizing is Mg
0.3sr
0.68al
2si
2o
8: 0.02Tm
3+up-conversion phosphor.
Embodiment 5
Select purity be 99.99% powder, by MgO, BaO, Al
2o
3, SiO and Tm
2o
3the each component of powder is 0.4mmol by mole number, 0.57mmol, 1mmol, 2mmol and 0.03mmol, in corundum mortar, grinding makes its Homogeneous phase mixing in 20 minutes, then calcination 5 hours at 800 DEG C in retort furnace, then 100 DEG C are cooled to be incubated 3 hours, furnace cooling takes out to room temperature again, and obtain block materials, can obtain chemical general formula after pulverizing is Mg
0.4ba
0.57al
2si
2o
8: 0.03Tm
3+up-conversion phosphor.
Embodiment 6
Select purity be 99.99% powder, by MgO, BaO, Al
2o
3, SiO and Tm
2o
3the each component of powder is 0.39mmol by mole number, 0.6mmol, 1mmol, 2mmol and 0.01mmol grinds and makes its Homogeneous phase mixing in 60 minutes in corundum mortar, then calcination 3 hours at 1000 DEG C in retort furnace, be then cooled to 500 DEG C to be incubated 0.5 hour, then furnace cooling takes out to room temperature, obtain block materials, can obtain chemical general formula after pulverizing is Mg
0.39ba
0.6al
2si
2o
8: 0.01Tm
3+up-conversion phosphor.
Embodiment 7
Select purity be 99.99% powder, by CaO, BaO, Al
2o
3, SiO and Tm
2o
3the each component of powder is 0.49mmol by mole number, 0.5mmol, 1mmol, 2mmol and 0.01mmol grinds and makes its Homogeneous phase mixing in 40 minutes in corundum mortar, then calcination 3 hours at 950 DEG C in retort furnace, be then cooled to 250 DEG C to be incubated 2 hours, then furnace cooling takes out to room temperature, obtain block materials, can obtain chemical general formula after pulverizing is Ca
0.49ba
0.5al
2si
2o
8: 0.01Tm
3+up-conversion phosphor.
Embodiment 8
Select purity be 99.99% powder, by CaO, BaO, Al
2o
3, SiO and Tm
2o
3the each component of powder is 0.37mmol by mole number, 0.6mmol, 1mmol, 2mmol and 0.03mmol, in corundum mortar, grinding makes its Homogeneous phase mixing in 20 minutes, then calcination 5 hours at 800 DEG C in retort furnace, then 100 DEG C are cooled to be incubated 3 hours, furnace cooling takes out to room temperature again, and obtain block materials, can obtain chemical general formula after pulverizing is Ca
0.37ba
0.6al
2si
2o
8: 0.03Tm
3+up-conversion phosphor.
Embodiment 9
Select purity be 99.99% powder, by SrO, CaO, Al
2o
3, SiO and Tm
2o
3the each component of powder is 0.16mmol by mole number, 0.8mmol, 1mmol, 2mmol and 0.04mmol grinds and makes its Homogeneous phase mixing in 60 minutes in corundum mortar, then calcination 3 hours at 1000 DEG C in retort furnace, be then cooled to 500 DEG C to be incubated 0.5 hour, then furnace cooling takes out to room temperature, obtain block materials, can obtain chemical general formula after pulverizing is Sr
0.16ca
0.8al
2si
2o
8: 0.04Tm
3+up-conversion phosphor.
Embodiment 10
Select purity be 99.99% powder, by SrO, CaO, Al
2o
3, SiO, and Tm
2o
3the each component of powder is 0.9mmol by mole number, 0.09mmol, 1mmol, 2mmol, 0.01mmol grind and make its Homogeneous phase mixing in 40 minutes in corundum mortar, then calcination 3 hours at 950 DEG C in retort furnace, then 250 DEG C are cooled to be incubated 2 hours, furnace cooling takes out to room temperature again, and obtain block materials, can obtain chemical general formula after pulverizing is Sr
0.9ca
0.09al
2si
2o
8: 0.01Tm
3+up-conversion phosphor.
Embodiment 11
Select purity be 99.99% powder, by BaO, SrO, Al
2o
3, SiO and Tm
2o
3the each component of powder is 0.4mmol by mole number, 0.57mmol, 1mmol, 2mmol and 0.03mmol, in corundum mortar, grinding makes its Homogeneous phase mixing in 20 minutes, then calcination 5 hours at 800 DEG C in retort furnace, then 100 DEG C are cooled to be incubated 3 hours, furnace cooling takes out to room temperature again, and obtain block materials, can obtain chemical general formula after pulverizing is Ba
0.4sr
0.57al
2si
2o
8: 0.03Tm
3+up-conversion phosphor.
Embodiment 12
Select purity be 99.99% powder, by BaO, SrO, Al
2o
3, SiO and Tm
2o
3the each component of powder is 0.1mmol by mole number, 0.88mmol, 1mmol, 2mmol and 0.02mmol grinds and makes its Homogeneous phase mixing in 60 minutes in corundum mortar, then calcination 3 hours at 1000 DEG C in retort furnace, be then cooled to 500 DEG C to be incubated 0.5 hour, then furnace cooling takes out to room temperature, obtain block materials, can obtain chemical general formula after pulverizing is Ba
0.1sr
0.88al
2si
2o
8: 0.02Tm
3+up-conversion phosphor.
The above embodiment only have expressed several embodiment of the present invention, and it describes comparatively concrete and detailed, but therefore can not 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. the two alkaline earth alumino-silicate up-conversion luminescent material of thulium doping, is characterized in that: its chemical general formula is A
mb
1-mal
2si
2o
8: xTm
3+, wherein, x is 0.01 ~ 0.05, m be 0.1 ~ 0.9, A is magnesium elements, calcium constituent, the one in strontium element and barium element, and B is magnesium elements, calcium constituent, the one in strontium element and barium element.
2. the two alkaline earth alumino-silicate up-conversion luminescent material of thulium doping according to claim 1, it is characterized in that, described x is 0.03, m is 0.5.
3. a preparation method for the two alkaline earth alumino-silicate up-conversion luminescent material of thulium doping, is characterized in that, comprise the following steps:
Step one, according to A
mb
1-mal
2si
2o
8: xTm
3+the stoichiometric ratio of each element takes AO, BO, Al
2o
3, SiO, and Tm
2o
3powder, wherein, x is 0.01 ~ 0.05, m be 0.1 ~ 0.9, A is magnesium elements, calcium constituent, the one in strontium element and barium element, and B is magnesium elements, calcium constituent, the one in strontium element and barium element;
Step 2, the powder taken mixed obtain presoma in described step one;
Step 3, by the calcination 0.5 hour ~ 5 hours at 800 DEG C ~ 1000 DEG C of described presoma,
Step 4, the precursor after process in described step 3 is cooled to 100 DEG C ~ 300 DEG C, then be incubated 0.5 hour ~ 3 hours, cool to room temperature, obtaining chemical general formula is A
mb
1-mal
2si
2o
8: xTm
3+the two alkaline earth alumino-silicate up-conversion luminescent material of thulium doping.
4. the preparation method of the two alkaline earth alumino-silicate up-conversion luminescent material of thulium doping according to claim 3, is characterized in that, described AO, BO, Al
2o
3, SiO and Tm
2o
3the each component molar of powder is than being (0.1 ~ 0.9): (0.1 ~ 0.9): 1:2:(0.01 ~ 0.05).
5. the preparation method of the two alkaline earth alumino-silicate up-conversion luminescent material of thulium doping according to claim 3, is characterized in that, described AO, BO, Al
2o
3, SiO, and Tm
2o
3the each component molar of powder is than being 0.5:0.47:1:2:0.03.
6. the preparation method of the two alkaline earth alumino-silicate up-conversion luminescent material of thulium doping according to claim 3, it is characterized in that, described in step 2, mixing is that described powder is ground 20 minutes ~ 60 minutes in corundum alms bowl.
7. the preparation method of the two alkaline earth alumino-silicate up-conversion luminescent material of thulium according to claim 3 doping, is characterized in that, by the calcination 3 hours at 950 DEG C of described presoma in step 3.
8. the preparation method of the two alkaline earth alumino-silicate up-conversion luminescent material of thulium doping according to claim 3, it is characterized in that, the cooling temperature in step 4 is 200 DEG C, and soaking time is 2 hours.
9. an Organic Light Emitting Diode, this Organic Light Emitting Diode comprises the substrate, negative electrode, organic luminous layer, anode and the transparent encapsulated layer that stack gradually, it is characterized in that, be dispersed with the two alkaline earth alumino-silicate up-conversion luminescent material of thulium doping in described transparent encapsulated layer, the chemical formula of the two alkaline earth alumino-silicate up-conversion luminescent material of described thulium doping is A
mb
1-mal
2si
2o
8: xTm
3+, wherein, x is 0.01 ~ 0.05, m be 0.1 ~ 0.9, A is magnesium elements, calcium constituent, the one in strontium element and barium element, and B is magnesium elements, calcium constituent, the one in strontium element and barium element.
10. Organic Light Emitting Diode according to claim 9, is characterized in that, described x is 0.03, m is 0.5.
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