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Preparation method of blue light luminescent material composited by stannic oxide and manganese oxide

A tin dioxide and blue light emitting technology, applied in the directions of luminescent materials, chemical instruments and methods, etc., can solve the problems of no tin oxide composite blue light emitting material, inability to achieve obvious improvement, low luminous efficiency, etc., and achieve a wide range of applications, Excellent stability and simple preparation method

Inactive Publication Date: 2012-12-05
UNIV OF ELECTRONICS SCI & TECH OF CHINA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

It is a semiconductor material with blue light emitting characteristics, but as a blue light emitting material, its luminous efficiency is low, unstable, mainly low temperature light emission, and it cannot be significantly improved after doping with antimony and other metals
There is no literature report on tin oxide and other oxide composite blue light-emitting materials

Method used

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  • Preparation method of blue light luminescent material composited by stannic oxide and manganese oxide
  • Preparation method of blue light luminescent material composited by stannic oxide and manganese oxide
  • Preparation method of blue light luminescent material composited by stannic oxide and manganese oxide

Examples

Experimental program
Comparison scheme
Effect test

Embodiment approach 1

[0027] Under stirring, add citric acid to 1000ml of deionized water at a constant temperature of 50°C until the pH of the solution is 1.5, then add 87.5 grams of tin tetrachloride pentahydrate and 49.5 grams of manganous chloride hexahydrate, stir to dissolve, and obtain a clear solution A . Then add 100ml polyethylene glycol solution, after stirring for 10 minutes, under stirring, add 300ml of ammonia water within 20 minutes to form tan sol B. Then add B into a polytetrafluoroethylene-lined hydrothermal kettle for hydrothermal reaction at 150°C for 12 hours to obtain a tin dioxide / manganese oxide composite gel. The resulting gel was dried at 110°C and ground. Then heat treatment at 200° C. in the air for 1 hour to obtain a tin dioxide / manganese oxide composite luminescent material with a molar ratio of tin and manganese of 1:1. The photoluminescence spectrum shows that this tin dioxide / manganese oxide composite luminescent material emits strong blue light under the excitati...

Embodiment approach 2

[0029] The preparation process of the above-mentioned Example 1 was adopted, except that 140.2 grams of tin tetrachloride pentahydrate and 19.8 grams of manganous chloride hexahydrate were added. The prepared tin dioxide / manganese oxide composite luminescent material has a molar ratio of tin and manganese of 75:25.

Embodiment approach 3

[0031] The preparation process of the above-mentioned Example 1 was adopted, except that 35.02 grams of tin tetrachloride pentahydrate and 79.2 grams of manganous chloride hexahydrate were added. The prepared tin dioxide / manganese oxide composite luminescent material has a molar ratio of tin and manganese of 25:75. The photoluminescence spectrum shows that this tin dioxide / manganese oxide composite luminescent material also emits strong blue light under the excitation of ultraviolet rays, ranging from 350-600nm, and the luminescence is the strongest under the excitation of 343nm ultraviolet rays, and the luminescence peak is 434nm.

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Abstract

The invention provides to a preparation method of a blue light luminescent material composited by stannic oxide and manganese oxide, belonging to the technical field of electronic materials and relating to inorganic luminescent materials. The preparation method comprises the following steps: a hydrolysis reaction generated by ammonia water and soluble inorganic stannic oxide, soluble inorganic manganese oxide under a mixing solution is used to generate a uniform and brown composite sol of the stannic hydroxide and manganese hydroxide; then a hydro-thermal reaction is used to obtain a uniform and transparent composite gel of the stannic oxide and the manganese oxide; and finally, the composite gel is dried, ground and thermally processed to obtain the blue light luminescent material composited by the stannic oxide and the manganese oxide. The preparation method is simple, easy to be operated and suitable for mass production. The prepared blue light luminescent material has innocuity and good stability, can emit dazzling blue light having a wavelength between 350nm and 600 nm and a luminescent peak at 434 nm by using 343 nm of ultraviolet ray to excite at room temperature, and is applied in the fields such as semiconductor luminescent devices, gas sensors, photochemical catalysts, photoelectric materials, catalyst carriers and the like.

Description

[0001] Field [0002] The invention belongs to the technical field of electronic materials, and relates to an inorganic luminescent material, in particular to a preparation method of a blue light luminescent material compounded with tin dioxide and manganese oxide. Background technique [0003] Semiconductor light-emitting devices are widely used in all-optical display and lighting technologies. At present, among the semiconductor light-emitting materials, the research of blue light-emitting materials is a hot spot at present, and it is very important to develop blue light-emitting materials with high emission efficiency, stability and low toxicity. In recent years, GaN, ZnSe and other wide-bandgap semiconductor blue light-emitting devices have been successfully developed, and wide-bandgap semiconductor light-emitting materials have received more and more attention. However, GaN, ZnSe and other materials are expensive and difficult to synthesize. In the past few years, porous...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09K11/66
Inventor 李志杰祖小涛
Owner UNIV OF ELECTRONICS SCI & TECH OF CHINA
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