CN103031126A - Luminescent material - Google Patents
Luminescent material Download PDFInfo
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- CN103031126A CN103031126A CN2012105957212A CN201210595721A CN103031126A CN 103031126 A CN103031126 A CN 103031126A CN 2012105957212 A CN2012105957212 A CN 2012105957212A CN 201210595721 A CN201210595721 A CN 201210595721A CN 103031126 A CN103031126 A CN 103031126A
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- long
- afterglow
- luminescent material
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Abstract
The invention provides a red long afterglow luminescent material, namely Gd2O2CO3:Eu<3+>x, and x is greater than or equal to 0.01 and less than or equal to 0.08.
Description
Technical field
The invention belongs to field of light emitting materials, particularly a kind of red long afterglow luminous material.
Background technology
Red long afterglow material is of paramount importance a kind of embedded photoluminescent material in the long after glow luminous material current research.Different from other embedded photoluminescent material is that long-afterglow material can absorb the ambient light irradiation energy, and it is stored, and after closing excitaton source, slowly releases in the form of room temperature with visible light, also just becomes a kind of long-persistence luminous.In the darker place of light, night or suddenly illumination outage, this material can play the effect of emergent demonstration, safety lighting.According to its this specific function, people are developed to luminous paint, luminescent ceramic, light-emitting film, luminescent plastics, luminescent fibre, luminous printing ink etc. with it, make it be widely used in industry and the fields such as building, chemical industry, industrial art.Be extended to gradually again in recent years the Application Areass such as information storage, energetic ray detection.After the nineties in 20th century, the discovery of the aluminates system long-afterglow material that novel high-performance is rare earth ion doped has caused people's very big interest, pushes application and the fundamental research of long-afterglow material to a brand-new historical stage.This period, say that from system long-afterglow material progressively develops into aluminate, transfer the systems such as hydrochlorate, silicate, silico-aluminate, germanate and other oxide compound; From the angle of glow color, material presents the multiple twilight sunset colors such as red, orange, yellow, green, blue, blue, purple and white; From the angle of afterglow ion, develop into rare earth ion and transition metal ion.On form, oneself extends to the aspects such as monocrystalline, film, pottery, glass and polymer composite long-afterglow material from polycrystal powder; From the angle of using, be developed to and decorate that dress is drilled, lossless detection and the high and new technology fields such as super-high density optical storage and demonstration of energetic ray detection, fibre optic thermometer, engineering ceramics.As one of gordian technique that realizes the long-afterglow material multicolor, the research of red long afterglow material has become another research emphasis after the blue-green long persistence material.
Summary of the invention
The invention provides a kind of red long afterglow luminous material, Gd
2O
2CO
3: Eu
3+ x, (0.01≤x≤0.0.08).
Description of drawings
Fig. 1 Gd
2O
2CO
3: Eu
3+ 0.05Vacuum ultraviolet-excited spectrum, the monitoring 611nm.
Embodiment
Hydrothermal method and two kinds of methods of flux method are adopted in the preparation of red long afterglow luminous material sample of the present invention.Synthesizing with Gd2O3 (4N) of hydrothermal method, Eu2O3 (4N), urea are starting raw material, by the accurate weighing of stoichiometric ratio.With Gd2O3 (4N), Eu2O3 (4N) is with behind the nitric acid dissolve, evaporate to dryness, add distilled water and be mixed with nitrate solution, add urea soln, being transferred to 50rnl has in the stainless steel cauldron of polytetrafluoroethylsubstrate substrate, is cooling off with furnace temperature behind the insulation 10h under 180 ℃ of conditions, then will filter, the washing after product is at 400 ℃ of roasting 1h.
The method that flux method prepares sample is as follows: with Gd2O3, Eu2O3 with nitric acid dissolve after, evaporate to dryness, add distilled water and be mixed with nitrate solution, add oxalic acid and form precipitation, heat preservation and dryness under 80 ℃ of conditions, obtain pre-reaction material, adopt Na2CO3, Li2CO3, the fused salt mixt of K2CO3 are as fusing assistant, and the fusing point of such fused salt mixt system is 390 ℃, presoma can reduce the fusing point of single fusing assistant, so that can generate the Gd2O3 fluorescent powder crystal under the fused solution environment of the lesser temps that composite fused salt forms.
Presoma respectively at 400 ℃ and 500 ℃ of lower roasting 72h, is used the distilled water wash sample, remove the K+ that sample retains, Na+, Li+ obtains final sample.
As can be seen from Figure 1: a wider peak has all appearred in the excitation spectrum of two samples in the 178-205nm scope, and its shape is similar, and this can belong to the absorption band of CO32+ in the matrix.This be because:
1, this absorption band width is about 35nm, and the wider characteristics of so wide absorption region and anionic group absorption region match;
2, C and B, P, the position of the elements such as Si in periodictable is very approaching, and in general near 135-170nm, the absorption of B-O group is many near 140-180nm mostly for the absorption of P-O group, and the absorption of Si-O group generally near 140-160nm, is therefore inferred at Gd
2O
2CO
3: Eu
3+ x170-205nm is attributed to the absorption of C-O group in the system.At sample Gd
2O
2CO
3: Eu
3+ 0.05Excitation spectrum in, the excitation band that is positioned at 153-178nm (central position 170nm) can belong to Gd
3+-O
2-Between charge transfer transition band (CT), this illustrates at Gd
2O
2CO
3: Eu
3+ 0.05In the system, Gd
3+Effective absorbed energy, and pass to the Eu3+ emission.Same, we are as can be seen from the figure at sample Gd
2O
2CO
3: Eu
3+ 0.05Excitation spectrum in this charge transfer transition band does not appear, this be because this system in do not have Gd
3+
Claims (1)
1. red long afterglow luminous material,
Material is Gd
2O
2CO
3: Eu
3+ x, 0.01≤x≤0.08 wherein.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012105957212A CN103031126A (en) | 2012-12-17 | 2012-12-17 | Luminescent material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012105957212A CN103031126A (en) | 2012-12-17 | 2012-12-17 | Luminescent material |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103031126A true CN103031126A (en) | 2013-04-10 |
Family
ID=48018533
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012105957212A Pending CN103031126A (en) | 2012-12-17 | 2012-12-17 | Luminescent material |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103031126A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109181696A (en) * | 2018-10-26 | 2019-01-11 | 广东工业大学 | A kind of red long-persistence nano-luminescent materials |
-
2012
- 2012-12-17 CN CN2012105957212A patent/CN103031126A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109181696A (en) * | 2018-10-26 | 2019-01-11 | 广东工业大学 | A kind of red long-persistence nano-luminescent materials |
| CN109181696B (en) * | 2018-10-26 | 2021-07-20 | 广东工业大学 | Red long afterglow nano luminescent material |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20130410 |