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:
Feb. 10, 2026
Filed:
May. 31, 2022
Versitech Limited, Hong Kong, CN;
Hong Kong Quantum Ai Lab Limited, Hong Kong, CN;
Versitech Limited, Hong Kong, CN;
Hong Kong Quantum AI Lab Limited, Hong Kong, CN;
Abstract
Platinum (II) complexes ('Pt(II) complexes') that can emit in the red and/or deep red regions and methods of making and using thereof are described. These Pt(II) complexes can have dinuclearity with close Pt—Pt contact and close interplanar distance, allowing for high emission quantum yield, such as >50%, short emission lifetime, such as <3 μs, and high radiative decay rate, such as in the order of 10s. The Pt(II) complexes disclosed herein can be included in organic light-emitting devices, such as organic light-emitting diodes (“OLEDs”), for use in commercial applications. OLEDs containing these red-emitting Pt(II) complexes can have current efficiency and/or external quantum efficiency that are comparable or higher than commercially available red emitters and prolonged operational lifetime, such as a LT95 at 1000 nits>9000 h for a red OLED.