Organic electroluminescent materials and devices

Patent metadata

Field	Value
Publication number	US-2016285016-A1
Application number	US-201615081146-A
Country	US
Kind code	A1
Filing date	Mar 25, 2016
Priority date	Mar 27, 2015
Publication date	Sep 29, 2016
Grant date	—

Abstract

An organic light-emitting device including a neutral molecular paramagnetic metal complex as an emitter in its organic emissive layer is disclosed. The neutral molecular paramagnetic metal complex has at least one ligand in which at least one coordinating atom is anionic.

First claim

1 . An organic light-emitting device (OLED) comprising:
an anode; a cathode; and
an organic emissive layer, disposed between the anode and the cathode, comprising a neutral molecular paramagnetic metal complex having at least one ligand in which at least one coordinating atom is anionic;
wherein the metal complex is an emitter in the organic emissive layer.

2 . The OLED of claim 1 , wherein the metal complex is a doublet emitter.

3 . The OLED of claim 1 , wherein the metal complex is capable of emitting light from a d-f transition band.

4 . The OLED of claim 1 , wherein each of the at least one ligand has at least one anionic coordinating atom.

5 . The OLED of claim 1 , wherein the metal complex is homoleptic.

6 . The OLED of claim 1 , wherein the metal complex is heteroleptic.

7 . The OLED of claim 1 , wherein the metal complex comprises at least one ligand having a density of at least three.

8 . The OLED of claim 1 , wherein the metal complex has a plurality of ligands whose coordinating atoms are selected from the group consisting of B, C, N, O, F, Si, P, S, Cl, Ge, As, Se, Br, and I.

9 . (canceled)

10 . (canceled)

11 . The OLED of claim 1 , wherein the metal is selected from the group consisting of Ce(III), Eu(II), Sm(II), and Yb(II).

12 . The OLED of claim 1 , wherein the metal is Ce(III).

13 . The OLED of claim 1 , wherein the metal complex comprises a structure of Formula 1:

Formula 1, wherein X 1 and X 2 are independently selected from the group consisting of C, N, O, Si, P, S, P, and Se.

14 . (canceled)

15 . The OLED of claim 13 , wherein at least one of X 1 and X 2 is N.

16 .- 23 . (canceled)

24 . The OLED of claim 13 , wherein the metal complex comprises a structure of Formula 2:

Formula 2;
wherein X 1 is independently selected from the group consisting of NR 1 , O, PR 1 , S;
wherein X 2 is independently selected from the group consisting of NR 2 , O, PR 2 , S;
wherein X 3 is independently selected from the group consisting of C or Si;
wherein X 4 is independently selected from the group consisting of CRR′R″, NRR′, OR, SiRR′R″, PRR′, SR, and SeR;
wherein R 1 , R 2 , R, 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 R 1 , R 2 , R, R′, and R″ are optionally joined or fused into a ring.

25 . (canceled)

26 . The OLED of claim 24 , wherein the metal complex comprises a structure of Formula 3:

Formula 3.

27 . The OLED of claim 24 , wherein the metal complex comprises a structure of Formula 4:

Formula 4.

28 . The OLED of claim 24 , wherein R 1 , R 2 , R, R′, and R″ are independently selected from the group consisting of alkyl, aryl, heteroaryl, and silyl.

29 . (canceled)

30 . The OLED of claim 13 , wherein the metal complex is selected from the group consisting of:

31 . The OLED of claim 13 , wherein the metal complex comprises a structure selected from the group consisting of:

wherein R a -R h are 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 any two adjacent R a -R h can be optionally joined or fused into a ring.

32 . The OLED of claim 1 , wherein the OLED is incorporated into a device selected from the group consisting of a consumer product, an electronic component module, and a lighting panel.

33 . The OLED of claim 1 , wherein the organic emissive layer further comprises a host, wherein host comprises at least one chemical group selected from the group consisting of triphenylene, carbazole, dibenzothiphene, dibenzofuran, dibenzoselenophene, azatriphenylene, azacarbazole, aza-dibenzothiophene, aza-dibenzofuran, and aza-dibenzoselenophene.

Assignees

• Universal Display Corp

Inventors

• Kwong Raymond

Classifications

• H01L51/005

  Electricity · mapped topic

• H01L51/5012

  Electricity · mapped topic

• H01L51/0072

  Electricity · mapped topic

• C09K2211/182

  of the rare earth metals, i.e. Sc, Y or lanthanide · CPC title

• H01L51/0074

  Electricity · mapped topic