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:
May. 15, 2018
Filed:
Mar. 29, 2016
Dow Global Technologies Llc, Midland, MI (US);
Rohm and Haas Electronic Materials Llc, Marlborough, MA (US);
Timothy S. De Vries, Midland, MI (US);
Kenneth L. Kearns, Jr., Midland, MI (US);
Travis E. McIntire, Midland, MI (US);
Sukrit Mukhopadhyay, Midland, MI (US);
Peter Trefonas, III, Medway, MA (US);
William H. H. Woodward, Harbor Beach, MI (US);
Rohm and Haas Electronic Materials LLC, Malborough, MA (US);
Dow Global Technologies LLC, Midland, MI (US);
Abstract
Aspects of the invention provide a composition having a blend of an electron transport material and an organo alkali-metal salt wherein the salt has a glass transition greater than 115° C. The organo-alkali metal salt may be selected from the group consisting of lithium 2-(2-pyridyl)phenolate (LiPP), lithium 2-(2',2″-bipyridine-6′-yl)phenolate (LiBPP), 2-(isoquinoline-10-yl)phenolate (LiIQP), and lithium 2-(2-phenylquinazolin-4-yl)phenolate and lithium 2-(4-phenylquinazolin-2-yl)phenolate. In a preferred embodiment, the organo-alkali metal salt is lithium 2-(2′,2″-bipyridine-6′-yl)phenolate (LiBPP). Aspects of the invention also provide films and devices having a film layer prepared from the composition.