Invention Grant
- Patent Title: Method for preparing inorganic halogenated lead cesium perovskite quantum dots and display device
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Application No.: US16462935Application Date: 2019-02-20
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Publication No.: US11236268B2Publication Date: 2022-02-01
- Inventor: Xu Chen
- Applicant: Wuhan China Star Optoelectronics Semiconductor Display Technology Co., Ltd.
- Applicant Address: CN Hubei
- Assignee: Wuhan China Star Optoelectronics Semiconductor Display Technology Co., Ltd.
- Current Assignee: Wuhan China Star Optoelectronics Semiconductor Display Technology Co., Ltd.
- Current Assignee Address: CN Hubei
- Agency: Hamre, Schumann, Mueller & Larson, P.C.
- Priority: CN201811251131.1 20181025
- International Application: PCT/CN2019/075555 WO 20190220
- International Announcement: WO2020/082646 WO 20200430
- Main IPC: C09K11/77
- IPC: C09K11/77 ; H01L51/50 ; C09K11/66 ; B82Y20/00 ; B82Y40/00
Abstract:
A method for preparing inorganic halogenated lead perovskite quantum dots and a display device are provided. The method includes: a first coordination solution preparing step, a cesium oleate solution preparing step, a centrifugal separation step, a second coordination solution preparing step, a first ion exchange step, and a second ion exchange step. The present invention also provides a display device including a quantum dot layer, wherein luminescent quantum dots of the quantum dot layer are inorganic halogenated lead cesium perovskite quantum dots of the present invention.
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