Solution processable doped triarylamine hole injection materials

摘要

Methods for fabricating a solution-processed OLED are provided. The methods include depositing an organic layer comprising mixture of an organic electron acceptor and an organic electron donor to form a layer that is insoluble to a non-polar solvent. Devices containing the organic layer may demonstrate improved lifetime and have a lower operating voltage while maintaining good luminous efficiency.

主权项

1. A method of fabricating an organic light emitting device, the method comprising:
providing an electrode; depositing a first organic layer in contact with the electrode by a solution process, wherein the first organic layer comprises an organic electron acceptor; and an organic electron donor having the formula: wherein A, B, and C are 5 or 6 membered cyclic or heterocyclic rings; wherein RA, RB, and RC are independent selected from the group consisting of hydrogen, halogen, alkyl, alkoxy, amino, alkenyl, alkynyl, aryl and heteroaryl; and wherein RA, RB, and RC are optionally fused to A, B, and C; and wherein at least two of RA, RB, and RC contain the structure: wherein X and Y are independently 5 or 6 membered cyclic or heterocyclic rings; wherein RX and RY are independent selected from the group consisting of hydrogen, halogen, alkyl, alkoxy, amino, alkenyl, alkynyl, aryl and heteroaryl; wherein RX and RY are optionally fused to X and Y; wherein RX and RY are optionally connected to A and B; and heating the first organic layer to form a layer that is insoluble in a non-polar solvent.