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:
Jan. 16, 2024
Filed:
Sep. 28, 2020
Ns Materials Inc., Fukuoka, JP;
Toshiaki Shimasaki, Fukuoka, JP;
NS MATERIALS INC., Fukuoka, JP;
Abstract
A quantum dot of the present invention is a nanocrystal represented by AgInE(E is at least one of tellurium, selenium, and sulfur) containing silver, indium, and chalcogen, in which a fluorescence wavelength is within a range of a near-infrared region of 700 to 1500 nm, a fluorescence full width at half maximum is 150 nm or less, and a fluorescence quantum yield is higher than 20%. In the present invention, an average particle diameter is preferably 1 nm or more and 15 nm or less. In addition, a method for producing a quantum dot of the present invention includes synthesizing a quantum dot represented by AgInE(E is at least one of tellurium, selenium, and sulfur) from a silver raw material, an indium raw material, and a chalcogenide raw material (chalcogenide is at least one of tellurium, selenium, and sulfur).