Host materials for OLEDs

• US 9,142,788 B2
• Filed: 01/06/2014
• Issued: 09/22/2015
• Est. Priority Date: 11/14/2011
• Status: Active Grant

• Current Assignee: Universal Display Corporation
• Original Assignee: Universal Display Corporation
• Inventors: Zeng, Lichang, Dyatkin, Alexey, Kottas, Gregg
• Primary Examiner(s): CLARK, GREGORY D
• Application Number:
  US14/148,003
• Publication Number:
  US 20140117343A1
• Time in Patent Office: 624 Days
• Field of Search: None
• US Class Current: 1/1
• CPC Class Codes: C07F 7/0805 comprising only Si, C or H atoms
• CPC Class Codes: C07F 7/0812 comprising a heterocyclic ring
• CPC Class Codes: H10K 2101/10 Triplet emission
• CPC Class Codes: H10K 50/11 characterised by the electroluminescent [EL] layers
• CPC Class Codes: H10K 85/40 Organosilicon compounds, e.g. TIPS pentacene

Abstract

Novel aryl silicon and aryl germanium host materials, and in particular host materials containing triphenylene and pyrene fragments, are described. These compounds improve OLED device performance when used as hosts in the emissive layer of the OLED.

Claims

1. A compound having the formula:

2. The compound of claim 1, wherein B is selected from the group consisting of:

3. The compound of claim 1, wherein A is selected from the group consisting of:

4. The compound of claim 1, wherein B is selected from the group consisting of:

5. The compound of claim 1, wherein L is independently selected from the group consisting of:

6. The compound of claim 1, wherein A is triphenylene.

7. The compound of claim 1, wherein Ar and Ar′

are phenyl.

8. The compound of claim 1, wherein L is phenyl.

9. The compound of claim 1, whereto the compound is selected from the group consisting of:

10. A first device comprising an organic light-emitting device, further comprising:

an anode;

a cathode; and

an organic layer, disposed between the anode and the cathode, comprising a compound having the formula;

11. The first device of claim 10, wherein the organic layer is an emissive layer and the compound of Formula I is a host.

12. The first device of claim 10, wherein the organic layer further comprises an emissive dopant.

13. The first device of claim 12, wherein the emissive dopant is a transition metal complex having at least one ligand selected from the group consisting of:

14. The first device of claim 12, wherein the emissive dopant has the formula

15. The first device of claim 10, wherein the device further comprises a second organic layer that is a non-emissive layer and the compound having Formula I is a material in the second organic layer.

16. The first device of claim 15, wherein the second organic layer is a blocking layer and the compound having Formula I is a blocking material in the second organic layer.

17. The first device of claim 15, wherein the second organic layer is an electron transporting layer and the compound having the Formula I is an electron transporting material in the second organic layer.

18. The first device of claim 10, wherein the first device is a consumer product.

19. The first device of claim 10, wherein the first device is an organic light-emitting device.

20. The first device of claim 11, wherein the first device comprises a lighting panel.