Sumitomo Chemical Company, Limited

Cambridge Display Technology Limited

Simon King

Martin Humphries

Matthew Roberts

Michael Cass

Daniel Forsythe

Martina Pintani

David Mohamad

Jonathan Nigel Pillow

Richard J Wilson

Florence Bourcet

William Tarran

Nazrul Islam

Robert Sidney Archer

Organic Light-Emitting Device An organic light-emitting device () comprising an anode (); a cathode (); a light-emitting layer () between the anode and the cathode; and a hole-transporting layer () between the anode and the cathode, wherein the light-emitting layer comprises a light-emitting compound of formula (I) and the hole-transporting layer comprises a hole-transporting material having a HOMO level that is no more than 5.1 e V from vacuum level: N N ML x R 2 (R) m (R) n y (I) wherein: R in each occurrence is independently a substituent; R 2 is H or a substituent; m is 0, 1 or 2; n is 0, 1, 2, 3 or 4; M is a transition metal; L is a ligand; y is at least 1; and x is 0 or a positive integer.

Organic light-emitting device

An organic light-emitting device () comprising an anode (); a cathode (); a light-emitting layer () between the anode and the cathode; a first hole-transporting layer (A) comprising a first conjugated hole-transporting polymer between the anode and the light-emitting layer; and a second hole-transporting layer (B) comprising a second conjugated hole-transporting polymer between the first hole-transporting layer and the light-emitting layer, wherein a lowest excited state energy level of the first hole-transporting polymer is lower than the lowest excited state energy of the second hole-transporting polymer.

Organic light emitting device

Composition which may be useful in an organic light emitting diode, the composition having a fluorescent light-emitting polymer with light-emitting repeat units, and a triplet-accepting unit mixed with the light-emitting polymer.

Organic light-emitting device and method

Composition for use in an organic light-emitting device, the composition having a fluorescent light-emitting material and a triplet-accepting material subject to the following energetic scheme: 2&#xd7;T&#x3e;S&#x3e;S, or T+T&#x3e;S&#x3e;Sin which: T1A represents a triplet excited state energy level of the triplet-accepting material; TIE represents a triplet excited state energy level of the light-emitting material; Srepresents a singlet excited state energy level of the triplet-accepting material; and Srepresents a singlet excited state energy level of the light-emitting material; and in which light emitted by the composition upon excitation includes delayed fluorescence.

An organic light-emitting device comprising an anode; a cathode; a first light-emitting layer between the anode and the cathode; and a second light-emitting layer between the first light-emitting layer and the cathode, wherein:

A method of manufacturing an organic light emissive device comprising: depositing an organic light emissive layer over an anode and depositing a cathode over the organic light emissive layer, wherein the cathode comprises a trilayer structure formed by: depositing a first layer comprising an electron injecting material; depositing a second layer over the first layer, the second layer comprising a metallic material having a workfunction greater than 3.5 eV; and depositing a third layer over the second layer, the third layer comprising a metallic material having a workfunction greater than 3.5 eV.

Growing community of inventors

Godmanchester, United Kingdom

Simon King