White light quantum dot complex particle and process for preparing same
AssigneeBoe Technology Group Co., Ltd.
InventorsChen Tang, Jingxia Gu, Xuelan Wang
Life of this patent
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Abstract
A white light quantum dot complex particle, comprising a seed particle (1) in the core, and a first shell layer (2), a second shell layer (3) and a third shell layer (4) wrapped around the seed particle (1) in order; in the first shell layer (2), the second shell layer (3) and the third shell layer (4) are one of a red light quantum dot layer, a green light quantum dot layer and a blue light quantum dot layer respectively, and are different from one another. Also disclosed is the process for preparing the white light quantum dot complex particle.
Claims22
A white light quantum dot complex particle, comprising a seed particle (1) in a core, and a first shell layer (2), a second shell layer (3) and a third shell layer (4) wrapped around the seed particle (1) in order, wherein in the first shell layer (2), the second shell layer (3) and the third shell layer (4) are respectively one of a red light quantum dot layer, a green light quantum dot layer and a blue light quantum dot layer, and are different from one another.
A process for preparing a white light quantum dot complex particle, comprising:
- dispersing a seed particle in water to obtain a seed suspension;
- mixing red light quantum dots, green light quantum dots and blue light quantum dots with a monomer, an initiator, a surfactant and water, respectively, for emulsification to obtain three emulsion systems respectively, which are designated as the emulsion system A, the emulsion system B and the emulsion system C, respectively;
- heating the seed suspension to 60-90° C., to which the emulsion system A is dripped, and then reacting with constant temperature for 2-10 h;
- then dripping the emulsion system B into the seed suspension, and then reacting with constant temperature for 2-10 h;
- then dripping the emulsion system C into the seed suspension, and then reacting with constant temperature for 2-10 h, to form the first shell layer, second shell layer and third shell layer in order;
- and
- washing the product after conclusion of the reaction to obtain the white light quantum dot complex particle.
Dependencies are inferred from the claim text.