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Rare-earth-doping metal halide material capable of emitting white light and preparation method of rare-earth-doping metal halide material

A metal halide and rare earth doping technology, which is applied in the direction of luminescent materials, organic chemical methods, chemical instruments and methods, etc., can solve the problems of easy drift of white light, low color rendering index, and inability to meet high-efficiency devices, and achieve repeatability Good, simple raw materials, good practical value and application prospect

Inactive Publication Date: 2018-11-02
QINGDAO UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, most of the commercialized WLED lighting devices are assembled by using phosphor powder and LED chip, but the disadvantages of traditional phosphor powder such as low color rendering index and easy drift of white light make it unable to meet the needs of high-efficiency devices.

Method used

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  • Rare-earth-doping metal halide material capable of emitting white light and preparation method of rare-earth-doping metal halide material
  • Rare-earth-doping metal halide material capable of emitting white light and preparation method of rare-earth-doping metal halide material
  • Rare-earth-doping metal halide material capable of emitting white light and preparation method of rare-earth-doping metal halide material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] In this embodiment, a mixture of 0.047g silver iodide, 0.045g europium nitrate hexahydrate, 0.0065g terbium nitrate hexahydrate, 0.035g thulium nitrate hexahydrate, 2mL N,N-dimethylformamide, 8mL acetonitrile and 0.05mL hydroiodic acid Add it into a 25mL beaker to dissolve, stir at room temperature for 1 hour, filter the obtained solution, and place the filtrate in a dark place to evaporate at room temperature for 3 days, then remove the generated crystals and wash them repeatedly with ethanol for 3 times, and dry them at room temperature to obtain Blocky yellow crystals, that is, rare earth doped metal halide materials that emit white light were prepared.

[0021] The single-crystal diffraction data analysis of the rare earth-doped metal halide material emitting white light prepared in this example shows that the obtained compound has a three-dimensional supramolecular structure, in which four-coordinated silver ions and different types of iodide ions (two , three, and...

Embodiment 2

[0023] In this embodiment, a mixture of 0.023g silver iodide, 0.045g europium nitrate hexahydrate, 0.0065g terbium nitrate hexahydrate, 0.035g thulium nitrate hexahydrate, 2mL N,N-dimethylformamide, 8mL acetonitrile and 0.05mL hydroiodic acid Add it into a 25mL beaker to dissolve, stir at room temperature for 1 hour and filter the resulting solution, and place the filtrate in a dark place to evaporate at room temperature for 3 days, then wash and dry as in Example 1, the obtained target products Item characterization and result are identical with embodiment 1.

Embodiment 3

[0025] In this embodiment, a mixture of 0.047g silver iodide, 0.045g europium nitrate hexahydrate, 0.0065g terbium nitrate hexahydrate, 0.035g thulium nitrate hexahydrate, 2mL N,N-dimethylformamide, 8mL acetonitrile and 0.05mL hydroiodic acid Add it into a 25mL beaker to dissolve, stir at room temperature for 0.5 hours and then filter the resulting solution, and place the filtrate in a dark place to stand at room temperature and volatilize for 3 days, then through the method of washing and drying as in Example 1, each of the target products obtained Item characterization and result are identical with embodiment 1.

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Abstract

The invention belongs to the technical field of inorganic chemistry materials and preparation, and relates to a rare-earth-doping metal halide material capable of emitting white light and a preparation method of the rare-earth-doping metal halide material. Firstly, silver salt, europium salt, terbium salt, a thulium salt, N,N-dimethylformamide, acetonitrile and hydroiodic acid are mixed uniformly,and a mixture is prepared; then the mixture is put in a beaker and stirred for 1 h at the room temperature, and a mixed solution is obtained; the mixed solution is filtered, an obtained filtrate is placed in the shadow, left to stand and volatized for 3-4 days, bulk yellow crystals with good crystallinity are obtained, washed with ethanol and dried at the room temperature, and the rare-earth-doping metal halide material capable of emitting white light is prepared. The raw materials of the rare-earth-doping metal halide material are simple and easily available, the method is simple and convenient to operate, repeatability is good, cost is low, and the rare-earth-doping metal halide material is environmentally friendly.

Description

Technical field: [0001] The invention belongs to the technical field of inorganic chemical materials and preparation, in particular to a rare earth-doped metal halide material capable of emitting white fluorescence and a preparation method thereof. Background technique: [0002] Luminescent materials refer to material materials that can absorb energy in a certain way and convert it into light radiation (non-equilibrium radiation). The wide application of this kind of materials in many fields such as fluorescent lamps, light-emitting diodes, plasma flat panel displays, lasers, and detection has become a research hotspot that people pay attention to. With the continuous development and application of new science and technology and new materials, people's demand for new luminescent materials continues to increase. White Light Emitting diodes (WLED) have the advantages of high luminous efficiency, long life, low energy consumption, environmental friendliness, and good stability...

Claims

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Application Information

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IPC IPC(8): C09K11/06C07F1/10C07F19/00C08G83/00
CPCC09K11/06C07B2200/13C07F1/005C07F19/005C08G83/008C09K2211/188
Inventor 王国明张迪薛镇镇刘会峦李辉
Owner QINGDAO UNIV
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