The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jul. 02, 2024
Filed:
Aug. 22, 2022
Xi'an University of Architecture and Technology, Xi'an, CN;
Dongying Hadong Industrial Technology Research Institute Co., Ltd., Dongying, CN;
Huidong Xie, Xi'an, CN;
Wei Liu, Xi'an, CN;
Zhiteng Wang, Xi'an, CN;
Xiaoling Guo, Xi'an, CN;
Chang Yang, Xi'an, CN;
Guanli Liu, Dongying, CN;
Abstract
A solvent-free and ligand-free ball milling method for preparation of cesium lead tribromide (CsPbBr) quantum dot is provided. First, mixing a Cs source, a Pb source, and a Br source as per a molar ratio of Cs source:Pb source:Br source is 1:1˜6:1˜9, and then adding polymethyl methacrylate (PMMA) to obtain a mixture. The mixture is milled for 1-2 hours at a rotation speed in a range of 360˜630 revolutions per minute (r/min) in a ball milling device, obtaining CsPbBrquantum dot. The method has advantages such as simple process, easy industrial production, no solvent, no organic ligand, low cost, and environmental protection. A quantum yield of product obtained by the method is up to 78%, and the product has a strong environmental stability. A preparation temperature of the product is low, and the reaction can be completed at a room temperature without a high temperature treatment.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile