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A kind of europium ion-activated red luminescent nano-fluorescent powder, preparation method and application

A nano-phosphor, europium ion technology, applied in luminescent materials, chemical instruments and methods, climate sustainability, etc., can solve the problems of large particle size, unsuitable for coating, high cost, low stability, etc., and achieve production The conditions and equipment requirements are not high, easy to operate, and the effect of improving the color rendering index

Active Publication Date: 2019-04-16
NANJING TONGLI CRYSTAL MATERIALS RES INST CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

In addition, there are relatively few existing red phosphors that can be effectively excited by near-ultraviolet light, and the large particle size is not suitable for coating. The environment is harmful, and it is troublesome to make and the cost of the preparation process is relatively high.

Method used

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  • A kind of europium ion-activated red luminescent nano-fluorescent powder, preparation method and application
  • A kind of europium ion-activated red luminescent nano-fluorescent powder, preparation method and application
  • A kind of europium ion-activated red luminescent nano-fluorescent powder, preparation method and application

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] According to the chemical formula Bi 0.85 Eu 0.15 SbP 4 o 14 The stoichiometric ratios of bismuth ions, europium ions, antimony ions and phosphorus ions in the medium were respectively weighed bismuth subcarbonate (BiO) 2 CO 3 0.5H 2 O: 1.1028 grams; europium nitrate Eu (NO 3 ) 3 ·6H 2 O: 0.3345 g; antimony trichloride SbCl 3 : 1.1406 g; diammonium hydrogen phosphate (NH 4 ) 2 HPO 4: 2.64 g. Dissolve the weighed raw bismuth subcarbonate in dilute nitric acid; dissolve the weighed europium nitrate, antimony trichloride, and diammonium hydrogen phosphate in deionized water; then add 1.2249 grams of citric acid to the bismuth subcarbonate solution 1. Add 0.2162 grams of citric acid to the europium nitrate solution, add 1.4411 grams of citric acid to the antimony trichloride solution, add 5.7642 grams of citric acid to the diammonium hydrogen phosphate solution, and stir respectively to obtain a clear solution;

[0028] Mix the four solutions slowly, stir for 1...

Embodiment 2

[0034] According to the chemical formula Bi 0.999 Eu 0.001 SbP 4 o 14 Among them, the stoichiometric ratios of bismuth ions, europium ions, antimony ions and phosphorus ions were respectively weighed as bismuth nitrate Bi(NO 3 ) 3 ·5H 2 O: 2.4231 g; europium oxide Eu 2 o 3 : 0.0009 g; antimony pentoxide Sb 2 o 5 : 0.8088 g; Ammonium dihydrogen phosphate NH 4 h 2 PO 4 : 2.3 g. Dissolve the weighed bismuth nitrate and ammonium dihydrogen phosphate in deionized water; dissolve the weighed europium oxide in dilute nitric acid; dissolve the weighed antimony pentoxide in hydrochloric acid under heating at 60°C; bismuth nitrate solution Add 0.8995 grams of oxalic acid to the solution, add 0.0009 grams of oxalic acid to the europium oxide solution, add 0.9004 grams of oxalic acid to the solution, add 3.6016 grams of oxalic acid to the solution of ammonium dihydrogen phosphate, and stir separately to obtain a clear solution;

[0035] Slowly mix the above four solutions, st...

Embodiment 3

[0038] According to the chemical formula Bi 0.99 Eu 0.01 SbP 4 o 14 Among them, the stoichiometric ratios of bismuth ions, europium ions, antimony ions and phosphorus ions were respectively weighed as bismuth nitrate Bi(NO 3 ) 3 ·5H 2 O: 2.4012 grams; europium nitrate Eu (NO 3 ) 3 ·6H 2 O: 0.0223 g; antimony pentoxide Sb 2 o 5 : 0.8088 g; phosphorus pentoxide P 2 o 5 : 1.42 g. Dissolve the weighed bismuth nitrate and phosphorus pentoxide in deionized water; dissolve the weighed europium nitrate in dilute nitric acid; dissolve the weighed antimony pentoxide in hydrochloric acid under heating at 60°C; Add 0.8023 grams of oxalic acid to the bismuth solution, add 0.0081 grams of oxalic acid to the europium nitrate solution, add 0.8104 grams of oxalic acid to the antimony pentoxide solution, add 3.2414 grams of oxalic acid to the phosphorus pentoxide solution, and stir separately to obtain a clear solution ;

[0039] Slowly mix the above four solutions, stir for 3 hou...

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Abstract

The invention discloses europium ion-activated red luminescent nano fluorescent powder, a preparation method and an application. A chemical formula of the material is Bi<1-x>Eu<x>SbP<4>O<14>, wherein x is a mole ratio of Bi<3+> ions replaced with trivalent europium ions Eu<3+>, the range of the mole ratio is 0.001<=x<=0.25. The red luminescent nano phosphor powder is capable of emitting pure red light of which the main wavelength is 614 nm under the excitation of ultraviolet light, near ultraviolet light and blue light, and can be applied to various lighting and display devices employing the ultraviolet light, the near ultraviolet light and the blue light as excitation sources to modulate the color temperature of a light source and to improve the color rendering index. The red luminescent nano fluorescent powder is small in particle and uniform in particle size, can be mixed with blue and green fluorescent powder, coats the outside of an InGaN diode and is packaged outside the InGaN diode; an LED capable of emitting warm white light is prepared; a matrix is stable, corrosion-resistant, light in light-emitting efficiency, nontoxic and pollution-free; and the preparation process is very easy to operate and industrially produce.

Description

technical field [0001] The invention relates to a red luminescent nano-fluorescent powder activated by europium ions, a preparation method and an application, and belongs to the technical field of inorganic luminescent materials. Background technique [0002] White light LED is a new type of lighting device. It is a green light source that has attracted the attention of scientific research and the market in the 21st century, and has a very broad application market prospect. White light LEDs have low power consumption (1 / 8 of incandescent bulbs, 1 / 2 of fluorescent bulbs), low heat generation, fast response, small size, long life (tens of thousands of hours is 10 times that of fluorescent lamps), and can be packaged flat It is easy to develop into light, thin and short products, and it is a potential product that the industry is optimistic about replacing traditional lighting fixtures in the next 10 years. In today's white LED development process, the use of near-ultraviolet ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09K11/81H01L33/50
CPCC09K11/7737H01L33/502Y02B20/00
Inventor 乔学斌
Owner NANJING TONGLI CRYSTAL MATERIALS RES INST CO LTD
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