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. 12, 2021
Filed:
Jan. 18, 2017
Lunalec Ab, Umea, SE;
Ludvig Edman, Umea, SE;
Martijn Kemerink, Linkoping, SE;
Andreas Sandstrom, Umea, SE;
Shi Tang, Umea, SE;
LUNALEC AB, Umea, SE;
Abstract
A light-emitting electrochemical cell comprising a first electrode, a second electrode, and at least one light-emitting active material comprising a combination of an electrolyte, a first constituent comprising a host compound and a second constituent comprising a guest compound. A quotient between a difference in LUMO energy level between the first and second constituent, E, and a difference in HOMO energy level between the second and first constituent, E, is 1/10 to 10, a quotient between an electron mobility and a hole mobility on the first constituent is 1/100 to 100, a quotient between a number of ions of the electrolyte and a number of molecules or repeat units of the second constituent is ⅓ to 5, and a LUMO energy level of the electrolyte is higher than the LUMO energy level of the first constituent and a HOMO energy level of the electrolyte is lower than the HOMO energy level of the first constituent.