Preparation method and application of Zn < 2 + > doped CsPbBr3 nanocrystalline phosphosilicate glass

A technology of phosphosilicate glass and nanocrystals, which is applied in glass manufacturing equipment, glass molding, glass furnace equipment, etc., can solve the problems of different light attenuation of the three primary colors, unstable color temperature, etc., and achieve improved thermal stability and chemical stability. The effect of stability
CN112094055APending Publication Date: 2020-12-18WUHAN UNIV OF TECH
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
WUHAN UNIV OF TECH
Publication Date
2020-12-18

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Abstract

The invention relates to the technical field of luminescent materials and devices, in particular to a preparation method and application of Zn < 2 + > doped CsPbBr3 nanocrystalline phosphosilicate glass, and the method comprises the following steps: melting uniformly mixed raw materials at a certain temperature to obtain molten glass; pouring the molten glass into a mold for molding, annealing ata certain temperature for a certain time, and cooling to room temperature; and carrying out heat treatment on the product at a certain temperature for 1-10 hours to obtain the Zn < 2 + > doped CsPbBr3nanocrystalline phosphosilicate glass. According to the preparation method disclosed by the invention, the adjustment of the sizes of the CsPbBr3 nanocrystal and the Zn < 2 + > doped CsPbBr3 nanocrystal can be realized, and the band gap of the CsPbBr3 nanocrystal is reduced through Zn < 2 + > doping, so that the spectrum is subjected to blue shift, and blue light is presented. The Zn < 2 + > doped CsPbBr3 nanocrystalline phosphosilicate glass prepared by the method can be used for preparing a white light LED.
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Description

technical field

[0001] The invention relates to the technical field of luminescent materials and devices, in particular to a Zn 2+ Doped CsPbBr 3 Preparation method and application of nanocrystalline phosphosilicate glass. Background technique

[0002] In the past few decades, the field of optoelectronic information has developed greatly, and optical materials are widely used in the field of optoelectronics, which play an important role in social development and directly affect people's daily life. Among them, the quality of luminescent materials is particularly important, and generally depends on several important properties, such as quantum yield (PLQY), spectral purity and stability, etc.

[0003] Semiconductor nanocrystals are quasi-zero-dimensional semiconductor nanocrystal particles. When the grain size of semiconductor materials is gradually reduced to the excitonic Bohr radius, the continuous energy band structure of the bulk material becomes a discrete energy lev...

Claims

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