Cerium-terbium co-doped borophosphate light-emitting film and preparation method thereof as well as organic electroluminescence device

A technology of luminescent film and borophosphate, which is applied in the field of cerium-terbium co-doped borophosphate luminescent film and its preparation, and organic electroluminescent devices, which can solve the problems of limited application and uncontrollable ratio of phosphate and rare earth elements

Active Publication Date: 2013-02-06
OCEANS KING LIGHTING SCI&TECH CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, since the preparation of phosphate system materials is carried out at high temperature, phosphorus oxide will evaporate, resulting in the uncontrollable ratio of phosphate and rare earth elements, which limits the use of phosphate system materials in electroluminescence devices. Application in powder field

Method used

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  • Cerium-terbium co-doped borophosphate light-emitting film and preparation method thereof as well as organic electroluminescence device
  • Cerium-terbium co-doped borophosphate light-emitting film and preparation method thereof as well as organic electroluminescence device
  • Cerium-terbium co-doped borophosphate light-emitting film and preparation method thereof as well as organic electroluminescence device

Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0018] Step S1, preparation of ceramic targets: according to the general chemical formula Sr(PO 4 ) x (BO 3 ) 1-x :mCe 3+ , nTb 3+ The stoichiometric ratio of each element in SrO, H 3 PO 4 、H 3 BO 3 、Ce 2 o 3 and Tb 4 o 7 , after uniform mixing, sintering at 900-1300°C (preferably 1250°C), and cooling naturally to obtain a target sample, which is cut into a target with a diameter of 50mm and a thickness of 2mm; where, the value of x The range is 0.4-0.8, the range of m is 0.012-0.036, and the range of n is 0.011-0.054; preferably, the value of x is 0.6, the value of m is 0.024, and the value of n is 0.032.

[0019] Step S2, put the target and substrate in step S1 into the vacuum chamber of the magnetron sputtering coating equipment, and use a mechanical pump and a molecular pump to pump the vacuum of the chamber to 1.0×10 -3 Pa~1.0×10 -5 Pa, preferably 5.0×10 -4 Pa;

[0020] Step S3, adjusting the magnetron sputtering coating process parameters as follows: the ...

Embodiment 1

[0027] 1. Select SrO, H 3 PO 4 、H 3 BO 3 、Ce 2 o 3 and Tb 4 o 7 , and their mass numbers are: SrO is 9.88g, H 3 PO 4 5.88g, H 3 BO 3 2.48g, Ce 2 o 3 0.364g, Tb 4 o 7 0.547g; these powders were uniformly mixed, sintered at 1250°C, and cooled naturally to obtain target samples, which were cut into targets with a diameter of 50 mm and a thickness of 2 mm;

[0028] 2. Put the target into the vacuum chamber of the magnetron sputtering coating equipment;

[0029] 3. Clean the glass ultrasonically with acetone, absolute ethanol and deionized water successively, and perform oxygen plasma treatment on it, and then put it into the vacuum chamber of the magnetron sputtering coating equipment; among them, the distance between the target and the glass Set to 60mm;

[0030] 4. Use a mechanical pump and a molecular pump to pump the vacuum of the vacuum chamber of the magnetron sputtering coating equipment to 5.0×10 -4 Pa;

[0031] 5. Adjust the process parameters of magnetr...

Embodiment 2

[0034] 1. Select SrO, H 3 PO 4 、H 3 BO 3 、Ce 2 o 3 and Tb 4 o 7 , the mass numbers are: SrO is 10.19g, H 3 PO 4 4.9g, H 3 BO 3 3.1g, Ce 2 o 3 0.182g, Tb 4 o 7 0.182g; these powders are uniformly mixed, sintered at 900°C, and cooled naturally to obtain target samples, which are cut into targets with a diameter of 50 mm and a thickness of 2 mm;

[0035] 2. Put the target into the vacuum chamber of the magnetron sputtering coating equipment;

[0036] 3. Clean the glass ultrasonically with acetone, absolute ethanol and deionized water successively, and perform oxygen plasma treatment on it, and then put it into the vacuum chamber of the magnetron sputtering coating equipment; among them, the distance between the target and the glass Set to 45mm;

[0037] 4. Use a mechanical pump and a molecular pump to pump the vacuum of the vacuum chamber of the magnetron sputtering coating equipment to 1.0×10 -3 Pa;

[0038] 5. Adjust the process parameters of magnetron sputter...

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Abstract

The invention belongs to the field of photoelectric light-emitting films, and discloses a cerium-terbium co-doped borophosphate light-emitting film and a preparation method thereof as well as an organic electroluminescence device. A chemical general formula of the light-emitting film is Sr(PO4)x(BO3)1-x:mCe<3+>, nTb<3+>, wherein Sr(PO4)x(BO3)1-x is a matrix, Ce<3+> and nTb<3+> are doping elements; x ranges from 0.4-0.8, m ranges from 0.012-0.036, and n ranges from 0.011-0.054. According to the invention, the cerium-terbium co-doped borophosphate light-emitting film is prepared by a magnetron spluttering device, has strong light-emitting peaks in wavelength regions of 490 nm and 510 nm, and is a development material of the electroluminescence device.

Description

technical field [0001] The invention relates to the field of photoelectric luminescent films, in particular to a cerium and terbium co-doped borophosphate luminescent film and a preparation method thereof. The invention also relates to an organic electroluminescent device using the cerium-terbium co-doped borophosphate light-emitting thin film as a light-emitting layer. Background technique [0002] Compared with the display screen made of traditional luminescent powder, the luminescent film shows strong advantages in terms of contrast, resolution, heat conduction, uniformity, adhesion to the substrate, and outgassing rate. Therefore, as a functional material, luminescent thin films have broad application prospects in the field of electroluminescent devices (TFELD) flat panel displays. [0003] In the research of electroluminescent device phosphors, phosphate system green powder is favored by researchers because of its moderate synthesis temperature, high luminous brightnes...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K11/71C23C14/08C23C14/35H05B33/14
Inventor 周明杰王平陈吉星黄辉
Owner OCEANS KING LIGHTING SCI&TECH CO LTD
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