Composite and preparation method thereof and application thereof

US11345850B2 · kind B2 · utility

Assignee

• TCL TECHNOLOGY GROUP CORPORATION · CN

Inventors

• Zhiwen NIE · Huizhou, CN
• Yixing Yang · Huizhou, CN

Key dates

• Filing date: Sep 30, 2019
• Grant date: May 31, 2022
• Expiry date: Sep 30, 2039

Classification

• Technology area (CPC B): Performing Operations; Transporting
• CPC primary: B82Y40/00
• WIPO field: Basic materials chemistry
• WIPO sector: Chemistry

Abstract

The present application discloses a composite and its preparation method and application. The composite includes silica-coated quantum dots and graphene nanosheets on the surface of the silica-coated quantum dots; wherein the silica-coated quantum dots include quantum dots and silica layer coated on the surface of the quantum dots. And the graphene nanosheets and the silica layer is bonded by (O—)3Si—R1—NHCO—R3—CONH—R2—Si(O—)3 or (O—)3Si—R4—SCH2CH2—R5—Si(O—)3, R1, R2, R4, R5 are respectively selected from a group consisting of a hydrocarbyl or a hydrocarbyl derivative, R3 is selected from a hydrocarbyl, a hydrocarbyl derivative, an aryl or an aryl derivative. The composite can further improve the stability of quantum dots without affecting the inherent optical properties of quantum dots, thereby improving luminous efficiency.