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:
Nov. 23, 2021
Filed:
May. 18, 2018
Novaled Gmbh, Dresden, DE;
Mauro Furno, Dresden, DE;
Volodymyr Senkovskyy, Dresden, DE;
Novaled GmbH, Dresden, DE;
Abstract
The present invention relates to an organic electroluminescent device comprising a first electrode, at least one second electrode, at least one emission layer and at least one electron transport region, wherein the emission layer and the electron transport region are arranged between the at least one second electrode and the first and the electron transport region is arranged between the emission layer and the at least one second electrode, wherein the at least one electron transport region comprises a first electron transport layer, the first electron transport layer preferably not comprising an n-type dopant; and a performance enhancement layer, the performance enhancement layer having a refractive index of ≤1.6 at a wavelength of 1,200 nm; wherein the first electron transport layer is arranged between the emission layer and the performance enhancement layer; and the performance enhancement layer is arranged between the first electron transport layer and the at least one second electrode.
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