Luminescent composite material and preparation method therefor
AssigneeShanghai Jiao Tong University
InventorsLiang Li, Bo Wang
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Abstract
A luminescent composite material and a preparation method therefor. The luminescent composite material is prepared by mixing a precursor of a quantum dot and an oxide or a precursor thereof followed by high-temperature calcination. Compared with traditional methods, the method provided herein is a simple and low-cost synthesis process without using solvents, and is suitable for large-scale production. The luminescent composite material has high quantum efficiency, luminous intensity and luminous color purity and good photothermal stability, which can provide basis for theoretical research and applications of the luminescent composite material in high-performance photoluminescence devices, lasers and nonlinear optical devices.
Claims10
A method for preparing a luminescent composite material, comprising:
- (1) mixing at least one precursor of a quantum dot and an oxide or a precursor thereof in solid phase followed by grinding to obtain a uniform mixture;
- wherein a molar ratio of the at least one precursor of the quantum dot to the oxide or precursor thereof is 1:1-100;
- (2) calcining the uniform mixture obtained in step (1) in a nitrogen atmosphere at 500-1000° C. for 5-60 min;
- (3) cooling the calcined mixture obtained in step (2) to room temperature;
- and
- grinding the mixture to obtain a luminescent composite material having a particle size less than 80 μm;
- and
- (4) annealing the grinded mixture obtained in step (3) in air at 400-600° C. for 5-60 min to obtain the luminescent composite material.
Dependencies are inferred from the claim text.