Light absorber and organic electroluminescence device including the same

Patent metadata

Field	Value
Publication number	US-11158809-B2
Application number	US-201816176876-A
Country	US
Kind code	B2
Filing date	Oct 31, 2018
Priority date	Oct 31, 2017
Publication date	Oct 26, 2021
Grant date	Oct 26, 2021

Abstract

Provided is an organic electroluminescence device provided with a light absorber represented by Formula 1 below, and a light absorbing layer including the same. In Formula 1, Ar is pyrene, chrysene, or anthracene, and Y is a hydrogen atom or a substituent, and X is represented by any one of Formula 2-1 to 2-3 below.

First claim

What is claimed is:

1. A light absorber represented by Formula 1 below:
X—Ar—Y  Formula 1

wherein in Formula 1,
Ar is pyrene, chrysene, or anthracene,
Y is a substituted or unsubstituted alkyl group having 1 to 20 carbon atoms, a substituted or unsubstituted alkenyl group having 2 to 20 carbon atoms, a substituted or unsubstituted alkoxy group having 1 to 20 carbon atoms, a substituted or unsubstituted acrylate group having 1 to 20 carbon atoms, a substituted or unsubstituted aryl group having 6 to 30 ring-forming carbon atoms, a substituted or unsubstituted heteroaryl group having 2 to 30 ring-forming carbon atoms, a substituted or unsubstituted carbonyl group, a substituted or unsubstituted benzophenone group, a substituted or unsubstituted benzoate group, or a substituted or unsubstituted salicylate, and
X is represented by any one of Formula 2-1 to 2-3 below:

2. The light absorber of claim 1 , wherein Formula 1 above is represented by any one of Formula 1-1 to 1-3 below:

wherein in Formula 1-1 to 1-3 above, X and Y are the same as defined in Formula 1.

3. The light absorber of claim 1 , wherein Formula 1 above is represented by any one of Formula 1-4 to 1-6 below:

wherein in Formula 1-4 to 1-6 above, X and Y are the same as defined in Formula 1.

4. The light absorber of claim 1 , wherein Formula 1 above is represented by any one of Formula 1-7 to 1-9 below:

wherein in Formula 1-7 to 1-9 above, X and Y are the same as defined in Formula 1.

5. The light absorber of claim 1 , wherein Y is a substituted or unsubstituted phenyl group, a substituted or unsubstituted biphenyl group, a substituted or unsubstituted naphthyl group, a substituted or unsubstituted anthracene group, a substituted or unsubstituted phenanthrene group, a substituted or unsubstituted dibenzofuran group, or a substituted or unsubstituted dibenzothiophene group.

6. The light absorber of claim 1 , wherein Y is represented by any one of the following structural formulas:

7. The light absorber of claim 1 , wherein X is represented by Formula 2-1, and Y is represented by Formula 3 below:

wherein in Formula 3, R is a substituted or unsubstituted alkyl group having 1 to 5 carbon atoms.

8. The light absorber of claim 1 having an absorbance of 0.7 or more in a wavelength range of 380 nm to 410 nm.

9. The light absorber of claim 1 , wherein the light absorber represented by Formula 1 above is any one selected from the compounds represented by Compound group 1 below:

10. An organic electroluminescence device comprising:
a first electrode;
a hole transport region provided on the first electrode;
a light emitting layer provided on the hole transport region;
an electron transport region provided on the light emitting layer;
a second electrode provided on the electron transport region; and
a light absorbing layer provided on at least one of a lower portion of the first electrode or an upper portion of the second electrode,
wherein the light absorbing layer comprises a light absorber represented by formula 1 below:
X—Ar—Y  Formula 1

wherein in Formula 1 above,
Ar is pyrene, chrysene, or anthracene,
Y is a hydrogen atom, a substituted or unsubstituted alkyl group having 1 to 20 carbon atoms, a substituted or unsubstituted alkenyl group having 2 to 20 carbon atoms, a substituted or unsubstituted alkoxy group having 1 to 20 carbon atoms, a substituted or unsubstituted acrylate group having 1 to 20 carbon atoms, a substituted or unsubstituted aryl group having 6 to 30 ring-forming carbon atoms, a substituted or unsubstituted heteroaryl group having 2 to 30 ring-forming carbon atoms, a substituted or unsubstituted carbonyl group, a substituted or unsubstituted benzophenone group, a substituted or unsubstituted benzoate group, or a substituted or unsubstituted salicylate, and
X is represented by any one of Formula 2-1 to 2-3 below.

11. The organic electroluminescence device of claim 10 , wherein Formula 1 above is represented by any one of Formula 1-1 to 1-3 below:

wherein in Formula 1-1 to 1-3 above, X and Y are the same as defined in Formula 1.

12. The organic electroluminescence device of claim 10 , wherein Formula 1 above is represented by any one of Formula 1-4 to 1-6 below:

wherein in Formula 1-4 to 1-6 above, X and Y are the same as defined in Formula 1.

13. The organic electroluminescence device of claim 10 , wherein Formula 1 above is represented by any one of Formula 1-7 to 1-9 below:

where in Formula 1-7 to 1-9 above, X and Y are the same as defined in Formula 1.

14. The organic electroluminescence device of claim 10 , wherein Y is a substituted or unsubstituted phenyl group, a substituted or unsubstituted biphenyl group, a substituted or unsubstituted naphthyl group, a substituted or unsubstituted anthracene group, a substituted or unsubstituted phenanthrene group, a substituted or unsubstituted dibenzofuran group, or a substituted or unsubstituted dibenzothiophene group.

15. The organic electroluminescence device of claim 10 , wherein Y is represented by any one of the following structural formulas:

16. The organic electroluminescence device of claim 10 , wherein X is represented by Formula 2-1, and Y is represented by Formula 3 below:

wherein in Formula 3 above, R is a substituted or unsubstituted alkyl group having 1 to 5 carbon atoms.

Assignees

• Samsung Display Co Ltd

Inventors

• Han Sanghyun
• Yun Wonmin
• Kim Jongwoo
• Baek Jangyeol
• Jeong Eunjae
• Kim Yohan
• Kim Yisu
• Kim Youngkook
• Hwang Seokhwan

Classifications

• H10K85/622

  containing four rings, e.g. pyrene · CPC title

• C07C49/784 Primary

  with all keto groups bound to a non-condensed ring · CPC title

• C07C15/38

  containing four rings · CPC title

• C07C15/24

  containing two rings · CPC title

• C07C49/788

  with keto groups bound to a condensed ring system · CPC title