EP3758084A1

Organic electroluminescent materials and devices

Abstract

Iridium complexes comprising three different bidentate ligands and their use in OLEDs to enhance the device efficiency and lifetime are disclosed.

EP3758084A1, drawing sheet 1
Sheet 1 of 2,440

Term

10.7 yearsto projected expiry

Projected expiry 19 June 2037, counted from filing; an application has no term until it is granted.

  1. Priority
  2. Filed
  3. Published
  4. Today
  5. Projected expiry

15 claims: 3 independent, 12 dependent

  1. 1
    A compound having a formula Ir(L A )(L B )(L C ); wherein the ligand L A is selected from the group consisting of:wherein the ligand L B is wherein the ligand L C is wherein rings A, B, C, and D are each independently a 5 or 6-membered carbocyclic or heterocyclic ring;wherein R 1 , R 2 , R 3 , R A , R B , R C , and R D each independently represents mono, to a maximum possible number of substitutions, or no substitution;wherein X 1 to X 10 , Z 1 , and Z 2 are each independently C or N;wherein Y 1 is selected from the group consisting of O, S, Se, and Ge;wherein X is selected from the group consisting of BR', NR', PR', O, S, Se, C=O, S=O, SO 2 , CR'R", SiR'R", and GeR'R";wherein L A , L B , and L C are different from each other, and can be connected to each other to form multidentate ligand;wherein R 1 , R 2 , R 3 , R A , R B , R C , R D , R', and R" are each independently selected from the group consisting of hydrogen, deuterium, halide, alkyl, cycloalkyl, heteroalkyl, arylalkyl, alkoxy, aryloxy, amino, silyl, alkenyl, cycloalkenyl, heteroalkenyl, alkynyl, aryl, heteroaryl, acyl, carbonyl, carboxylic acids, ester, nitrile, isonitrile, sulfanyl, sulfinyl, sulfonyl, phosphino, and combinations thereof;and wherein any two or more substituents among R 1 , R 2 , R 3 , R A , R B , R C , R D , R', and R" are optionally joined or fused into a ring.
  2. 11
    An organic light emitting device (OLED) comprising:an anode;a cathode;and an organic layer, disposed between the anode and the cathode, comprising a compound having the formula Ir(L A )(L B )(L C ) as defined in any one of the previous claims.
  3. 14
    A consumer product comprising an organic light-emitting device (OLED) comprising:an anode;a cathode;and an organic layer, disposed between the anode and the cathode, comprising a compound having the formula Ir(L A )(L B )(L C ) as defined in any one of claims 1 to 10.