CN104449737A - Holmium-ytterbium co-doped silver selenium salt up-conversion luminescent material as well as preparation method and application thereof - Google Patents
Holmium-ytterbium co-doped silver selenium salt up-conversion luminescent material as well as preparation method and application thereof Download PDFInfo
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Abstract
The invention provides a holmium-ytterbium co-doped silver selenium salt up-conversion luminescent material. The chemical formula of the holmium-ytterbium co-doped silver selenium salt up-conversion luminescent material is shown as follows: MAgSe2:xHo<3+>, yYb<3+>, wherein x ranges from 0.02 to 0.1, y ranges from 0.02 to 0.2, and M is one of aluminum element, gallium element, indium element and thallium element. In the photoluminescence spectra of the holmium-ytterbium co-doped silver selenium salt up-conversion luminescent material, the excitation wavelength of the holmium-ytterbium co-doped silver selenium salt up-conversion luminescent material is 640nm, a glow peak is formed in a 490nm wavelength region by virtue of transition radiation of Ho<3+> ion from <5>F3 to <5>I8, and the holmium-ytterbium co-doped silver selenium salt up-conversion luminescent material can serve as a blue light luminescent material. The invention also provides a preparation method of the holmium-ytterbium co-doped silver selenium salt up-conversion luminescent material and an organic light-emitting diode using the holmium-ytterbium co-doped silver selenium salt up-conversion luminescent material.
Description
Technical field
The present invention relates to a kind of holmium ytterbium codoped silver selenium salt 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 holmium ytterbium codoped silver selenium salt 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 inspire the holmium ytterbium codoped silver selenium salt up-conversion luminescent material of blue light, preparation method by long-wave radiation and use the Organic Light Emitting Diode of this holmium ytterbium codoped silver selenium salt up-conversion luminescent material.
A kind of holmium ytterbium codoped silver selenium salt up-conversion luminescent material, its chemical formula is MAgSe
2: xHo
3+, yYb
3+, wherein, x is 0.02 ~ 0.1, y be 0.02 ~ 0.2, M is aluminium element, gallium element, a kind of in phosphide element and thallium element.
Described x is 0.06, y is 0.1.
A preparation method for holmium ytterbium codoped silver selenium salt up-conversion luminescent material, comprises the following steps
Step one, according to MAgSe
2: xHo
3+, yYb
3+the stoichiometric ratio of each element takes M
2se
3, Ag
2se, Ho
2se
3and Yb
2se
3powder, wherein, x is 0.02 ~ 0.1, y be 0.02 ~ 0.2, M is aluminium element, gallium element, a kind of in phosphide element and thallium 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 MAgSe
2: xHo
3+, yYb
3+holmium ytterbium codoped silver selenium salt up-conversion luminescent material.
Described M
2se
3, Ag
2se, Ho
2se
3and Yb
2se
3the each component molar of powder is than being (0.7 ~ 0.96): 1:(0.02 ~ 0.1): (0.02 ~ 0.2).
Described M
2se
3, Ag
2se, Ho
2se
3and Yb
2se
3the each component molar of powder is than being 0.84:1:0.06:0.1.
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 250 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 holmium ytterbium codoped silver selenium salt up-conversion luminescent material in described transparent encapsulated layer, the chemical formula of described holmium ytterbium codoped silver selenium salt up-conversion luminescent material is MAgSe
2: xHo
3+, yYb
3+, wherein, x is 0.02 ~ 0.1, y be 0.02 ~ 0.2, M is aluminium element, gallium element, a kind of in phosphide element and thallium element.
Described x is 0.06, y is 0.1.
The preparation method of above-mentioned holmium ytterbium codoped silver selenium salt up-conversion luminescent material 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 holmium ytterbium codoped silver selenium salt up-conversion luminescent material of preparation, the excitation wavelength of holmium ytterbium codoped silver selenium salt up-conversion luminescent material is 640nm, in 490nm wavelength zone by Ho
3+ion
5f
3→
5i
8transition 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 holmium ytterbium codoped silver selenium salt up-conversion luminescent material prepared by embodiment 1.
Fig. 3 is the XRD spectrum of holmium ytterbium codoped silver selenium salt up-conversion luminescent material 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 holmium ytterbium codoped silver selenium salt up-conversion luminescent material material.
Embodiment
Below in conjunction with the drawings and specific embodiments, holmium ytterbium codoped silver selenium salt up-conversion luminescent material and preparation method thereof is illustrated further.
The holmium ytterbium codoped silver selenium salt up-conversion luminescent material of one embodiment, its chemical formula is MAgSe
2: xHo
3+, yYb
3+, wherein, x is 0.02 ~ 0.1, y be 0.02 ~ 0.2, M is aluminium element, gallium element, a kind of in phosphide element and thallium element.
Preferably, x is 0.06, y is 0.1.
In the photoluminescence spectra of this holmium ytterbium codoped silver selenium salt up-conversion luminescent material, the excitation wavelength of holmium ytterbium codoped silver selenium salt up-conversion luminescent material is 640nm, when material is subject to the radiation of long wavelength (as 640nm) time, and Ho
3+ion has just been in
5f
3excited state, then to
5i
8transition, just sends the blue light of 490nm, can as blue light emitting material.
The preparation method of above-mentioned holmium ytterbium codoped silver selenium salt up-conversion luminescent material, comprises the following steps:
Step S11, according to MAgSe
2: xHo
3+, yYb
3+the stoichiometric ratio of each element takes M
2se
3, Ag
2se, Ho
2se
3and Yb
2se
3powder, wherein, x is 0.02 ~ 0.1, y be 0.02 ~ 0.2, M is aluminium element, gallium element, a kind of in phosphide element and thallium element.
In this step, described M
2se
3, Ag
2se, Ho
2se
3and Yb
2se
3the each component molar of powder is than being (0.7 ~ 0.96): 1:(0.02 ~ 0.1): (0.02 ~ 0.2).
In this step, preferred M
2se
3, Ag
2se, Ho
2se
3and Yb
2se
3the each component molar of powder is than being 0.84:1:0.06:0.1.
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 MAgSe
2: xHo
3+, yYb
3+, wherein, x is 0.02 ~ 0.1, y be 0.02 ~ 0.2, M is aluminium element, gallium element, a kind of in phosphide element and thallium element.
Preferably, the precursor after process in step S15 is cooled to 250 DEG C, then is incubated 2 hours.
Preferably, described x is 0.06, y is 0.1.
The preparation method of above-mentioned holmium ytterbium codoped silver selenium salt up-conversion luminescent material 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 holmium ytterbium codoped silver selenium salt up-conversion luminescent material of preparation, the excitation wavelength of holmium ytterbium codoped silver selenium salt up-conversion luminescent material is 640nm, in 490nm wavelength zone by Ho
3+ion
5f
3→
5i
8transition 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 holmium ytterbium codoped silver selenium salt up-conversion luminescent material 6 in transparent encapsulated layer 5, the chemical formula of holmium ytterbium codoped silver selenium salt up-conversion luminescent material is MAgSe
2: xHo
3+, yYb
3+wherein, x is 0.02 ~ 0.1, y is 0.02 ~ 0.2, M is aluminium element, gallium element, a kind of in phosphide element and thallium element, organic luminous layer 3 in this device sends red-green glow, and part red-green glow excites in transparent encapsulated layer 5 and is dispersed with holmium ytterbium codoped silver selenium salt up-conversion luminescent material 6 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 Al
2se
3, Ag
2se, Ho
2se
3and Yb
2se
3the each component of powder is 0.84mmol by mole number, 1mmol, 0.06mmol and 0.1mmol grinds and makes 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 AlAgSe
2: 0.06Ho
3+, 0.1Yb
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 holmium ytterbium codoped silver selenium salt up-conversion luminescent material 6 in transparent encapsulated layer 5, the chemical formula of holmium ytterbium codoped silver selenium salt up-conversion luminescent material is AlAgSe
2: 0.06Ho
3+, 0.1Yb
3+.
Refer to Fig. 2, Figure 2 shows that the photoluminescence spectra figure of the holmium ytterbium codoped silver selenium salt up-conversion luminescent material obtained.As seen from Figure 2, the excitation wavelength of the holmium ytterbium codoped silver selenium salt up-conversion luminescent material that curve 1 the present embodiment obtains is 640nm, in 490nm wavelength zone by Ho
3+ion
5f
3→
5i
8transition radiation form glow peak, this holmium ytterbium codoped silver selenium salt up-conversion luminescent material can be used as blue light emitting material, and curve 2 undopes under same preparation condition with the embodiment of the present invention to mix Yb altogether
3+the contrast AlAgSe of element
2: 0.06Ho
3+, 0.1Yb
3+.Contrast accompanying drawing can find out there is Yb
3+the luminous intensity of coactivated sample is significantly improved.
Refer to Fig. 3, in Fig. 3, curve is the XRD curve of holmium ytterbium codoped silver selenium salt up-conversion luminescent material prepared by enforcement 1.Test comparison standard P DF card.As can be seen from Figure 3, diffraction peak is the peak crystallization of silver-colored selenium salt, does not occur the diffraction peak of doped element and other impurity; Illustrate that the product that this preparation method obtains has good crystalline quality.
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 holmium ytterbium codoped silver selenium salt up-conversion luminescent material material, and curve 2 is not doped with the contrast of holmium ytterbium codoped silver selenium salt up-conversion luminescent material material in transparent encapsulated layer.Can find out in figure, fluorescent material by the red light of long wave, can inspire the blue light of shortwave, blendes together white light.
Embodiment 2
Select purity be 99.99% powder, by Al
2se
3, Ag
2se, Ho
2se
3and Yb
2se
3the each component of powder is 0.96mmol by mole number, 1mmol, 0.02mmol and 0.02mmol grinds and makes its Homogeneous phase mixing in 20 minutes in corundum mortar, then calcination 0.5 hour 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 AlAgSe
2: 0.02Ho
3+, 0.02Yb
3+on up-conversion phosphor.
Embodiment 3
Select purity be 99.99% powder, by Al
2se
3, Ag
2se, Ho
2se
3and Yb
2se
3the each component of powder is 0.7mmol by mole number, 1mmol, 0.1mmol and 0.2mmol grinds and makes its Homogeneous phase mixing in 60 minutes in corundum mortar, then calcination 0.5 hour at 1000 DEG C in retort furnace, then 500 DEG C are cooled to be incubated 0.5 hour, furnace cooling takes out to room temperature again, and obtain block materials, can obtain chemical general formula after pulverizing is AlAgSe
2: 0.1Ho
3+, 0.2Yb
3+up-conversion phosphor.
Embodiment 4
Select purity be 99.99% powder, by Ga
2se
3, Ag
2se, Ho
2se
3and Yb
2se
3the each component of powder is 0.84mmol by mole number, 1mmol, 0.06mmol and 0.1mmol grinds and makes 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 GaAgSe
2: 0.06Ho
3+, 0.1Yb
3+up-conversion phosphor.
Embodiment 5
Select purity be 99.99% powder, by Ga
2se
3, Ag
2se, Ho
2se
3and Yb
2se
3the each component of powder is 0.96mmol by mole number, 1mmol, 0.02mmol and 0.02mmol grinds and makes its Homogeneous phase mixing in 20 minutes in corundum mortar, 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 GaAgSe
2: 0.02Ho
3+, 0.02Yb
3+up-conversion phosphor.
Embodiment 6
Select purity be 99.99% powder, by Ga
2se
3, Ag
2se, Ho
2se
3and Yb
2se
3the each component of powder is 0.7mmol by mole number, 1mmol, 0.1mmol and 0.2mmol grinds and makes its Homogeneous phase mixing in 60 minutes in corundum mortar, then calcination 3 hours at 1000 DEG C in retort furnace, then 500 DEG C are cooled to be incubated 0.5 hour, furnace cooling takes out to room temperature again, and obtain block materials, can obtain chemical general formula after pulverizing is GaAgSe
2: 0.1Ho
3+, 0.2Yb
3+up-conversion phosphor.
Embodiment 7
Select purity be 99.99% powder, by In
2se
3, Ag
2se, Ho
2se
3and Yb
2se
3the each component of powder is 0.84mmol by mole number, 1mmol, 0.06mmol and 0.1mmol grinds and makes 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 InAgSe
2: 0.06Ho
3+, 0.1Yb
3+up-conversion phosphor.
Embodiment 8
Select purity be 99.99% powder, by In
2se
3, Ag
2se, Ho
2se
3and Yb
2se
3the each component of powder is 0.96mmol by mole number, 1mmol, 0.02mmol and 0.02mmol grinds and makes its Homogeneous phase mixing in 20 minutes in corundum mortar, 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 InAgSe
2: 0.02Ho
3+, 0.02Yb
3+up-conversion phosphor.
Embodiment 9
Select purity be 99.99% powder, by In
2se
3, Ag
2se, Ho
2se
3and Yb
2se
3the each component of powder is 0.7mmol by mole number, 1mmol, 0.1mmol and 0.2mmol grinds and makes its Homogeneous phase mixing in 60 minutes in corundum mortar, then calcination 3 hours at 1000 DEG C in retort furnace, then 500 DEG C are cooled to be incubated 0.5 hour, furnace cooling takes out to room temperature again, and obtain block materials, can obtain chemical general formula after pulverizing is InAgSe
2: 0.1Ho
3+, 0.2Yb
3+up-conversion phosphor.
Embodiment 10
Select purity be 99.99% powder, by Tl
2se
3, Ag
2se, Ho
2se
3and Yb
2se
3the each component of powder is 0.84mmol by mole number, 1mmol, 0.06mmol and 0.1mmol grinds and makes 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 TlAgSe
2: 0.06Ho
3+, 0.1Yb
3+up-conversion phosphor.
Embodiment 11
Select purity be 99.99% powder, by Tl
2se
3, Ag
2se, Ho
2se
3and Yb
2se
3the each component of powder is 0.96mmol by mole number, 1mmol, 0.02mmol and 0.02mmol grinds and makes its Homogeneous phase mixing in 20 minutes in corundum mortar, 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 TlAgSe
2: 0.02Ho
3+, 0.02Yb
3+up-conversion phosphor.
Embodiment 12
Select purity be 99.99% powder, by Tl
2se
3, Ag
2se, Ho
2se
3and Yb
2se
3the each component of powder is 0.7mmol by mole number, 1mmol, 0.1mmol and 0.2mmol grinds and makes its Homogeneous phase mixing in 60 minutes in corundum mortar, then calcination 3 hours at 1000 DEG C in retort furnace, then 500 DEG C are cooled to be incubated 0.5 hour, furnace cooling takes out to room temperature again, and obtain block materials, can obtain chemical general formula after pulverizing is TlAgSe
2: 0.1Ho
3+, 0.2Yb
3+up-conversion phosphor.
Embodiment 13
Select purity be 99.99% powder, by Al
2se
3, Ag
2se, Ho
2se
3and Yb
2se
3the each component of powder is 0.77mmol by mole number, 1mmol, 0.08mmol and 0.15mmol grinds and makes 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 AlAgSe
2: 0.08Ho
3+, 0.15Yb
3+up-conversion phosphor.
Embodiment 14
Select purity be 99.99% powder, by Ga
2se
3, Ag
2se, Ho
2se
3and Yb
2se
3the each component of powder is 0.78mmol by mole number, 1mmol, 0.04mmol and 0.18mmol grinds and makes its Homogeneous phase mixing in 20 minutes in corundum mortar, 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 GaAgSe
2: 0.04Ho
3+, 0.18Yb
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. a holmium ytterbium codoped silver selenium salt up-conversion luminescent material, is characterized in that: its chemical general formula is MAgSe
2: xHo
3+, yYb
3+, wherein, x is 0.02 ~ 0.1, y be 0.02 ~ 0.2, M is aluminium element, gallium element, a kind of in phosphide element and thallium element.
2. holmium ytterbium codoped silver selenium salt up-conversion luminescent material according to claim 1, it is characterized in that, described x is 0.06, y is 0.1.
3. a preparation method for holmium ytterbium codoped silver selenium salt up-conversion luminescent material, is characterized in that, comprise the following steps:
Step one, according to MAgSe
2: xHo
3+, yYb
3+the stoichiometric ratio of each element claims M
2se
3, Ag
2se, Ho
2se
3and Yb
2se
3powder, wherein, x is 0.02 ~ 0.1, y be 0.02 ~ 0.2, M is aluminium element, gallium element, a kind of in phosphide element and thallium 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 ~ 500 DEG C, then be incubated 0.5 hour ~ 3 hours, cool to room temperature, obtaining chemical general formula is MAgSe
2: xHo
3+, yYb
3+holmium ytterbium codoped silver selenium salt up-conversion luminescent material.
4. the preparation method of holmium ytterbium codoped silver selenium salt up-conversion luminescent material according to claim 3, is characterized in that, described M
2se
3, Ag
2se, Ho
2se
3and Yb
2se
3the each component molar of powder is than being (0.7 ~ 0.96): 1:(0.02 ~ 0.1): (0.02 ~ 0.2).
5. the preparation method of holmium ytterbium codoped silver selenium salt up-conversion luminescent material according to claim 3, is characterized in that, described M
2se
3, Ag
2se, Ho
2se
3and Yb
2se
3the each component molar of powder is than being 0.84:1:0.06:0.1.
6. the preparation method of holmium ytterbium codoped silver selenium salt up-conversion luminescent material 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 holmium ytterbium codoped according to claim 3 silver selenium salt up-conversion luminescent material, is characterized in that, by the calcination 3 hours at 950 DEG C of described presoma in step 3.
8. the preparation method of holmium ytterbium codoped silver selenium salt up-conversion luminescent material according to claim 3, it is characterized in that, the cooling temperature in step 4 is 250 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 holmium ytterbium codoped silver selenium salt up-conversion luminescent material in described transparent encapsulated layer, the chemical formula of described holmium ytterbium codoped silver selenium salt up-conversion luminescent material is MAgSe
2: xHo
3+, yYb
3+, wherein, x is 0.02 ~ 0.1, y be 0.02 ~ 0.2, M is aluminium element, gallium element, a kind of in phosphide element and thallium element.
10. Organic Light Emitting Diode according to claim 9, is characterized in that, described x is 0.06, y is 0.1.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107161958A (en) * | 2017-05-31 | 2017-09-15 | 中国科学院合肥物质科学研究院 | A kind of AgGaGenSe2(n+1)The fast synthesis method of series compound |
| CN113881435A (en) * | 2021-10-12 | 2022-01-04 | 江南大学 | Rare earth doped silver selenide quantum dot and synthesis method thereof |
-
2013
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107161958A (en) * | 2017-05-31 | 2017-09-15 | 中国科学院合肥物质科学研究院 | A kind of AgGaGenSe2(n+1)The fast synthesis method of series compound |
| CN113881435A (en) * | 2021-10-12 | 2022-01-04 | 江南大学 | Rare earth doped silver selenide quantum dot and synthesis method thereof |
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Application publication date: 20150325 |