Compound for organic light-emitting device and organic light-emitting device including the same

Patent metadata

Field	Value
Publication number	US-10069077-B2
Application number	US-201514644158-A
Country	US
Kind code	B2
Filing date	Mar 10, 2015
Priority date	Sep 12, 2014
Publication date	Sep 4, 2018
Grant date	Sep 4, 2018

Abstract

A compound for an organic light-emitting device, the compound represented by Chemical Formula 1 and satisfying Mathematical Formula 1:
E S1 <2E T1 <E T2 ,  Mathematical Formula 1

wherein, in Mathematical Formula 1, E S1 is a first singlet energy of the compound; E T1 is a first triplet energy of the compound; and E T2 is a second triplet energy of the compound.

First claim

What is claimed is:

1. A compound for an organic light-emitting device, the compound satisfying Mathematical Formula 1 and being represented by one selected from the group consisting of Chemical Formulae 1A-1 to 1A-6:

wherein, in Chemical Formulae 1A-1 and 1A-2,
R 12 , R 13 , R 15 , R 17 , R 18 and R 20 are each independently selected from the group consisting of —F, a methyl group, an ethyl group, an n-propyl group, an iso-propyl group, an n-butyl group, an iso-butyl group, a sec-butyl group, a tert-butyl group, —Si(CH 3 ) 3 , and compounds represented by Chemical Formulae 3-1 and 3-2, and
in Chemical Formulae 1A-3 to 1A-6,
R 12 , R 13 , R 15 , R 17 , R 18 and R 20 are each independently selected from the group consisting of a hydrogen atom, —F, a methyl group, an ethyl group, an n-propyl group, an iso-propyl group, an n-butyl group, an iso-butyl group, a sec-butyl group, a tert-butyl group, —Si(CH 3 ) 3 , and compounds represented by Chemical Formulae 3-1 and 3-2:

wherein, in Chemical Formulae 3-1 and 3-2,
* is a binding site to an adjacent atom;
E S1 <2E T1 <E T2 ,  Mathematical Formula 1

wherein, in Mathematical Formula 1,
E S1 is a first singlet energy of the compound, E S1 being in a range of about 3.1 eV to about 3.3 eV;
E T1 is a first triplet energy of the compound; and
E T2 is a second triplet energy of the compound.

2. The compound of claim 1 , wherein Chemical Formulae 1A-1 to 1A-6 satisfy Chemical Formula 1, wherein a first triplet energy (E AT1 ) of A and a first triplet energy (E BT1 ) of B satisfy Mathematical Formula 2:
E AT1 <E BT1 .  Mathematical Formula 2

3. The compound of claim 2 , wherein a second triplet energy (E AT2 ) of A and a first triplet energy (E BT1 ) of B satisfy Mathematical Formula 3:
E AT2 <E BT1 .  Mathematical Formula 3

4. The compound of claim 1 , wherein the compound is selected from Compounds 1 to 10:

5. An organic light-emitting device comprising:
a first electrode;
a second electrode; and
an organic layer between the first electrode and the second electrode, the organic layer comprising an emission layer,
wherein the emission layer comprises the compound of claim 1 .

6. The organic light-emitting device of claim 5 , wherein the emission layer comprises a dopant and the compound as a host.

7. The organic light-emitting device of claim 5 , wherein the emission layer comprises a host and the compound as a dopant.

8. The compound of claim 1 , wherein
E T1 is in a range of about 1.3 eV to about 1.7 eV, and
E T2 is in a range of about 2.8 eV to about 3.5 eV.

Assignees

• Samsung Display Co Ltd

Inventors

• Park Illsoo
• Kim Seulong
• Shin Hyosup

Classifications

• C09K2211/1011

  Condensed systems · CPC title

• C07D213/53

  Nitrogen atoms · CPC title

• C09K2211/1014

  bridged by heteroatoms, e.g. N, P, Si or B · CPC title

• C09K2211/1044

  containing two nitrogen atoms as heteroatoms · CPC title

• C09K2211/1029

  containing one nitrogen atom as the heteroatom · CPC title