Hole injection layer and charge generation layer containing a truxene based compound

Patent metadata

Field	Value
Publication number	US-11839147-B2
Application number	US-201816101565-A
Country	US
Kind code	B2
Filing date	Aug 13, 2018
Priority date	Sep 4, 2017
Publication date	Dec 5, 2023
Grant date	Dec 5, 2023

Abstract

Hole injection layer and charge generation layer containing a truxene based compound are disclosed for organic electronic devices. By applying the truxene based compound for the hole injection layer, low driving voltage, high efficiency and long lifetime of the device can be achieved. In addition, a P-type charge generation layer comprising the truxene based compound can be used in tandem OLEDs structure and can further improve the voltage, efficiency and lifetime of the device.

First claim

What is claimed is:

1. An organic electroluminescent device comprising:
an anode,
a cathode, and
a hole injection layer disposed between the anode and cathode, wherein the hole injection layer comprises a compound selected from the group consisting of:

2. The device of claim 1 , wherein the hole injection layer comprising the compound is in contact with the anode.

3. The device of claim 1 , wherein the hole injecting layer is a layer consisting entirely of the compound.

4. The device of claim 1 , wherein the hole injection layer further comprises an aromatic amine compound, and wherein the aromatic amine compound is doped with the compound.

5. The device of claim 4 , wherein the aromatic amine compound is selected from the group consisting of:

6. A tandem organic electrolurninescent device comprises:
an anode,
a cathode,
a charge generation layer disposed between the anode and cathode, wherein the charge generation layer comprises a compound selected from the group consisting of:

7. The device of claim 6 , wherein the charge generation layer is a layer consisting entirely of the compound.

8. The device of claim 6 , wherein the charge generation layer is a P-type charge generation layer.

9. The device of claim 6 , wherein the charge generation layer further comprises an aromatic amine compound.

10. The device of claim 9 , wherein the aromatic amine compound is selected from the group consisting of:

11. A compound having a structure selected from the group consisting of:

12. The device of claim 1 , wherein the device further includes a hole transport layer.

Assignees

• Beijing Summer Sprout Tech Co Ltd

Inventors

• Xia Chuanjun

Classifications

• H10K85/624 Primary

  containing six or more rings · CPC title

• C07C255/51 Primary

  containing at least two cyano groups bound to the carbon skeleton · CPC title

• C07C255/34

  with cyano groups linked to the six-membered aromatic ring, or to the condensed ring system containing that ring, by unsaturated carbon chains · CPC title

• C07C255/37

  the carbon skeleton being further substituted by etherified hydroxy groups · CPC title

• C07C381/00

  Compounds containing carbon and sulfur and having functional groups not covered by groups C07C301/00 - C07C337/00 · CPC title