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:
Aug. 11, 2020
Filed:
Jul. 03, 2014
Samsung Research America, Inc., Mountain View, CA (US);
Yuhua Niu, Waltham, MA (US);
Peter T. Kazlas, Sudbury, MA (US);
SAMSUNG RESEARCH AMERICA, INC., Mountain View, CA (US);
Abstract
A method for preparing a light emitting device comprising: disposing an electron-injection layer comprising a metal oxide on a cathode, disposing a first layer adjacent the electron-injection layer, the first layer comprising a small molecule material with a bandgap of at least about 3 eV capable of blocking holes, forming an emissive layer comprising quantum dots capable of emitting blue light upon excitation at a surface of the first layer opposite the electron-injection layer; disposing a second layer comprising a material capable of transporting holes and blocking electrons with a bandgap of at least about 3 eV adjacent a surface of the emissive layer opposite the first layer, and disposing an anode over the second layer. A light-emitting device is also disclosed.