CN103045265A - Luminescent material - Google Patents
Luminescent material Download PDFInfo
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- CN103045265A CN103045265A CN2012105813907A CN201210581390A CN103045265A CN 103045265 A CN103045265 A CN 103045265A CN 2012105813907 A CN2012105813907 A CN 2012105813907A CN 201210581390 A CN201210581390 A CN 201210581390A CN 103045265 A CN103045265 A CN 103045265A
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Abstract
The invention provides a luminescent material, which is white up-conversion luminescent powder obtained by directly tri-doping 30Yb-0.1Tm-0.2Er with LiY3F10 nanocrystals.
Description
Technical field
The invention belongs to field of light emitting materials, particularly a kind of up-conversion luminescent material.
Background technology
Up-conversion luminescent material also has very high requirement to choosing of substrate material.Although by increasing pumping laser power, rare earth ion can be realized up-conversion luminescence in a lot of materials, but because the luminous intensity difference of identical activator ion in the different substrates material is very large, maximum differs 8 orders of magnitude, so in order really to be satisfied the up-conversion luminescent material of practical application, must select suitable substrate material.Forefathers' the experimental results shows that desirable up-conversion luminescence substrate material should have the lattice that is complementary with dopant ion.Y
3+, La
3+, Gd
3+, Lu
3+Owing to have ionic radius and the chemical property similar with sensitizer ion to above-mentioned activator, thereby their mineral compound is suitable up-conversion luminescence substrate material mostly.In addition, alkaline-earth metal ions (Ca
2+, Sr
2+And Ba
2+) and some transition metal ions (such as Zn
2+, Zr
4+And Ti
4+) also have an ionic radius close with rare earth ion.Therefore, the mineral compound that contains these ions also usually is used as the substrate material of up-conversion luminescence.Minimum for the non-radiative relaxation that makes the upper efficiency of conversion of impact, desirable up-conversion luminescence substrate material also should have lower phonon energy.Fluorochemical, oxyfluoride, oxysulfide and partial oxide oxysalt since phonon can be lower and stable chemical nature be good selection.Most up-conversion luminescent materials is take this five classes material as matrix at present.Although, muriate, smell compound and iodide have lower phonon can be (less than 300cm
-1), can export more efficient up-conversion luminescence in other words, but deliquescent character has limited their practical application.Therefore, up to the present, relevant research report is actually rare.In addition, desirable substrate material should be optically transparent at visible waveband, and this point also is vital for obtaining efficient up-conversion luminescence.
Summary of the invention
The invention provides a kind of luminescent material, for 30Yb-0.1Tm-0.2Er direct three mixes LiY
3F
10Nanocrystalline white light up-conversion luminescence powder.
Description of drawings
The upper inversion spectrum of Figure 130 Yb-0.1Tm-0.2Er under single 980nm LD pumping.
Embodiment
The rare earth oxide that takes by weighing appropriate amount with stoichiometric ratio is dissolved in rare nitric acid and thin up to 15ml, subsequently, doses a certain amount of citric acid (mol ratio of citric acid and rare earth ion is 1: 3), and stirring obtains solution A.Solution B is dissolved in to add in the ml water by stoichiometric LiF and makes.Under magnetic agitation, solution B is injected rapidly solution A, behind the room temperature reaction 30min, reaction solution is moved to (compactedness 80%) in the autoclave, and in 220 ℃ of thermostatically heating 12h.After autoclave is chilled to room temperature naturally, takes out reaction solution and water and dehydrated alcohol and wash respectively three times.At last, product dried overnight under vacuum.Make 30Yb-0.1Tm-0.2Er direct three and mix LiY
3F
10Nanocrystalline.
Fig. 1 has provided the upper inversion spectrum of sample 30Yb-0.1Tm-0.2Er under the 980nmLD pumping.
Be positioned at 445 ~ 458nm among the figure, the emission band of 460 ~ 495nm and 515 ~ 560nm is corresponding respectively
1D
2→
3F
4,
1G
4→
3F
4(Tm
3+) with
4F
9/2→
4I
15/2(Er
3+) transition 635 ~ 685nm wave band that coexists.For glow color and the color balance of judging 30Yb-0.ITm-0.2Er, Fig. 1 (b) has provided the chromaticity coordinates of sample under different capacity.When pump power is respectively 146.7,242,342,442,542,642, during 742mw, chromaticity coordinates is respectively (0.339,0.356), (0.337,0.373), (0.327,0.376), (0.323,0.376), (0.318,0.373), (0.311,0.368), (0.30 (i, 0.363).Clearly, all color point coordinates all are in close proximity to equal-energy white (0.333,0.333), the more important thing is, along with the increase of pump power, very small variation only occurs chromaticity coordinates.Fig. 1 (c) has provided 30Yb-0.1Tm-0.2Er and has excited white light photo under the room light condition on lower daytime, the pericentral orange Gaussian curve that is attributable to laser beam of white at 980tunLD.At 10.5w/cm
2Power density under, naked eyes can be observed so bright white light, show that 30Yb-0.1Tm-0.2Er has very high upper efficiency of conversion.
Claims (1)
1. luminescent material is for 30Yb-0.1Tm-0.2Er direct three mixes LiY
3F
10Nanocrystalline white light up-conversion luminescence powder.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012105813907A CN103045265A (en) | 2012-12-26 | 2012-12-26 | Luminescent material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012105813907A CN103045265A (en) | 2012-12-26 | 2012-12-26 | Luminescent material |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103045265A true CN103045265A (en) | 2013-04-17 |
Family
ID=48058130
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012105813907A Pending CN103045265A (en) | 2012-12-26 | 2012-12-26 | Luminescent material |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103045265A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113337286A (en) * | 2021-06-28 | 2021-09-03 | 南京信息工程大学滨江学院 | Nano hollow rare earth doped gadolinium fluoride fluorescent powder and preparation method thereof |
-
2012
- 2012-12-26 CN CN2012105813907A patent/CN103045265A/en active Pending
Non-Patent Citations (1)
| Title |
|---|
| TAO PANG ET AL.: "Design and achieving mechanism of upconversion white emission based on Yb3+/Tm3+/Er3+ tri-doped KY3F10 nanocrystals", 《OPTICAL MATERIALS》 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113337286A (en) * | 2021-06-28 | 2021-09-03 | 南京信息工程大学滨江学院 | Nano hollow rare earth doped gadolinium fluoride fluorescent powder and preparation method thereof |
| CN113337286B (en) * | 2021-06-28 | 2022-09-23 | 南京信息工程大学滨江学院 | Nano hollow rare earth doped gadolinium fluoride fluorescent powder and preparation method thereof |
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Application publication date: 20130417 |