ORGANIC ELECTROLUMINESCENCE DEVICE AND POLYCYCLIC COMPOUND FOR ORGANIC ELECTROLUMINESCENCE DEVICE

• US 20190312210A1
• Filed: 03/11/2019
• Published: 10/10/2019
• Est. Priority Date: 04/05/2018
• Status: Active Application

• Current Assignee: Samsung Display Company Limited (Samsung Electronics Co. Ltd.)
• Original Assignee: Samsung Display Company Limited (Samsung Electronics Co. Ltd.)
• Inventors: AKASHI, Nobutaka, SUZAKI, Yuji
• Application Number:
  US16/298,942
• Publication Number:
  US 20190312210A1
• Time in Patent Office: Days
• CPC Class Codes: C07D 471/10 Spiro-condensed systems
• CPC Class Codes: C07D 519/00 Heterocyclic compounds containing more than one system of two or more relevant hetero rings condensed among themselves or condensed with a common carbocyclic ring system not provided for in groups C07D453/00 or C07D455/00
• CPC Class Codes: C07F 5/027 Organoboranes and organoborohydrides
• CPC Class Codes: C07F 7/081 comprising at least one atom selected from the elements N, O, halogen, S, Se or Te
• CPC Class Codes: C07F 7/0816 said ring comprising Si as a ring atom
• CPC Class Codes: C07F 7/30 Germanium compounds
• CPC Class Codes: C09K 11/06 containing organic luminescent materials
• CPC Class Codes: C09K 2211/1018 Heterocyclic compounds
• CPC Class Codes: H05B 33/14 characterised by the chemical or physical composition or the arrangement of the electroluminescent material , or by the simultaneous addition of the electroluminescent material in or onto the light source
• CPC Class Codes: H10K 50/00 Organic light-emitting devices integrated devices or assemblies of multiple devices H10K59/00, H10K65/00; organic semiconductor lasers H01S5/36
• CPC Class Codes: H10K 50/11 characterised by the electroluminescent [EL] layers
• CPC Class Codes: H10K 50/15 Hole transporting layers
• CPC Class Codes: H10K 50/16 Electron transporting layers
• CPC Class Codes: H10K 50/17 Carrier injection layers
• CPC Class Codes: H10K 50/171 Electron injection layers
• CPC Class Codes: H10K 50/18 Carrier blocking layers
• CPC Class Codes: H10K 85/40 Organosilicon compounds, e.g. TIPS pentacene
• CPC Class Codes: H10K 85/657 Polycyclic condensed heteroaromatic hydrocarbons
• CPC Class Codes: H10K 85/6572 comprising only nitrogen in the heteroaromatic polycondensed ring system, e.g. phenanthroline or carbazole

Abstract

An organic electroluminescence device includes a first electrode, a hole transport region on the first electrode, an emission layer on the hole transport region, an electron transport region on the emission layer, and a second electrode on the electron transport region, wherein the emission layer includes a polycyclic compound represented by Formula 1. In Formula 1, X₁ may be C, Si or Ge; and AC may be an electron acceptor.

Claims

1. An organic electroluminescence device, comprising:

a first electrode;

a hole transport region on the first electrode;

an emission layer on the hole transport region;

an electron transport region on the emission layer; and

a second electrode on the electron transport region,

wherein the emission layer comprises a polycyclic compound represented by Formula 1;

2. The organic electroluminescence device of claim 1, wherein Formula 3 is further represented by Formula 3-1 or 3-2:

3. The organic electroluminescence device of claim 1, wherein Formula 4 is further represented by one of the following formulae:

4. The organic electroluminescence device of claim 1, wherein Formula 7 is further represented by one of the following formulae:

5. The organic electroluminescence device of claim 1, wherein Formula 8 is further represented by one of the following formulae:

6. The organic electroluminescence device of claim 1, wherein Formula 9 is further represented by one of the following formulae:

7. The organic electroluminescence device of claim 1, wherein Ar is a substituted or unsubstituted phenyl group.

8. The organic electroluminescence device of claim 1, wherein the emission layer comprises a host and a dopant, and

the dopant comprises the polycyclic compound.

9. The organic electroluminescence device of claim 8, wherein the polycyclic compound is a dopant for thermally activated delayed fluorescence.

10. The organic electroluminescence device of claim 8, wherein the polycyclic compound is a blue dopant having a wavelength of less than about 470 nm.

11. The organic electroluminescence device of claim 1, wherein the hole transport region comprises:

a hole injection layer on the first electrode;

a hole transport layer on the hole injection layer; and

an electron blocking layer on the hole transport layer.

12. The organic electroluminescence device of claim 1, wherein the electron transport region comprises:

a hole blocking layer on the emission layer;

an electron transport layer on the hole blocking layer; and

an electron injection layer on the electron transport layer.

13. The organic electroluminescence device of claim 1, wherein the polycyclic compound represented by Formula 1 is at least one selected from compounds represented in Compound Group 1:

14. A polycyclic compound represented by Formula 1

15. The polycyclic compound of claim 14, wherein Formula 3 is further represented by Formula 3-1 or 3-2:

16. The polycyclic compound of claim 14, wherein Formula 4 is further represented by one of the following formulae:

17. The polycyclic compound of claim 14, wherein Formula 7 is further represented by one of the following formulae:

18. The polycyclic compound of claim 14, wherein Formula 8 is further represented by one of the following formulae:

19. The polycyclic compound of claim 14, wherein Formula 9 is further represented by one of the following formulae:

20. The polycyclic compound of claim 14, wherein the polycyclic compound represented by Formula 1 is at least one selected from compounds represented in Compound Group 1: