ORGANIC ELECTROLUMINESCENCE DEVICE AND MATERIAL FOR ORGANIC ELECTROLUMINESCENCE DEVICE
First Claim
1. An organic electroluminescence device, comprising:
- a cathode;
an anode; and
a single-layered or multilayered organic thin-film layer provided between the cathode and the anode, whereinthe organic thin-film layer comprises at least one emitting layer, andthe at least one emitting layer comprises;
at least one phosphorescent material; and
a host material represented by a formula (1) as follows, where;
Ar1, Ar2, Ar3, B1, B2, B3 and B4 each represent a substituted or unsubstituted benzene ring or a condensed aromatic hydrocarbon ring selected from a substituted or unsubstituted naphthalene ring, a substituted or unsubstituted chrysene ring, a substituted or unsubstituted fluoranthene ring, a substituted or unsubstituted phenanthrene ring, a substituted or unsubstituted benzophenanthrene ring, a substituted or unsubstituted dibenzophenanthrene ring, a substituted or unsubstituted triphenylene ring, a substituted or unsubstituted benzo[a]triphenylene ring, a substituted or unsubstituted benzochrysene ring, a substituted or unsubstituted benzo[b]fluoranthene ring and a substituted or unsubstituted picene ring; and
p is 0 or 1.
1 Assignment
0 Petitions
Accused Products
Abstract
An organic electroluminescence device includes: a cathode; an anode; and a single-layered or multilayered organic thin-film layer provided between the cathode and the anode. The organic thin-film layer includes at least one emitting layer. The at least one emitting layer contains at least one phosphorescent material and a host material represented by the following formula (1).
In the formula, Ar1, Ar2, Ar3, B1, B2, B3 and B4 each represent a substituted or unsubstituted benzene ring or a substituted or unsubstituted condensed aromatic hydrocarbon ring selected from a naphthalene ring, a chrysene ring, a fluoranthene ring, a phenanthrene ring, a benzophenanthrene ring, a dibenzophenanthrene ring, a triphenylene ring, a benzo[a]triphenylene ring, a benzochrysene ring, a benzo[b]fluoranthene ring and a picene ring. p is 0 or 1.
-
Citations
11 Claims
-
1. An organic electroluminescence device, comprising:
-
a cathode; an anode; and a single-layered or multilayered organic thin-film layer provided between the cathode and the anode, wherein the organic thin-film layer comprises at least one emitting layer, and the at least one emitting layer comprises;
at least one phosphorescent material; and
a host material represented by a formula (1) as follows,where;
Ar1, Ar2, Ar3, B1, B2, B3 and B4 each represent a substituted or unsubstituted benzene ring or a condensed aromatic hydrocarbon ring selected from a substituted or unsubstituted naphthalene ring, a substituted or unsubstituted chrysene ring, a substituted or unsubstituted fluoranthene ring, a substituted or unsubstituted phenanthrene ring, a substituted or unsubstituted benzophenanthrene ring, a substituted or unsubstituted dibenzophenanthrene ring, a substituted or unsubstituted triphenylene ring, a substituted or unsubstituted benzo[a]triphenylene ring, a substituted or unsubstituted benzochrysene ring, a substituted or unsubstituted benzo[b]fluoranthene ring and a substituted or unsubstituted picene ring; and
p is 0 or 1.- View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
-
-
5. The organic electroluminescence device according to claim 4, wherein the ligand has an ortho-metal bond.
-
6. The organic electroluminescence device according to claim 1, wherein a maximum wavelength of light emission of the at least one phosphorescent material contained in the emitting layer is in a range of 500 nm to 720 nm.
-
7. The organic electroluminescence device according to claim 1, wherein
the organic thin-film layer comprises an electron transporting layer or an electron injecting layer between the cathode and the emitting layer, and the electron transporting layer or the electron injecting layer comprises an aromatic ring having a nitrogen-containing six-membered or five-membered ring skeleton, or a condensed aromatic cyclic compound having a nitrogen-containing six-membered or five-membered ring skeleton. -
8. The organic electroluminescence device according to claim 1, wherein a reductive dopant is present at an interfacial region between the cathode and the organic thin-film layer.
-
9. A material for an organic electroluminescence device, comprising a host material represented by a formula (2) as follows,
where: - Ar1, Ar2, Ar3, B1, B2, B3 and B4 each represent a substituted or unsubstituted benzene ring or a condensed aromatic hydrocarbon ring selected from a substituted or unsubstituted naphthalene ring, a substituted or unsubstituted chrysene ring, a substituted or unsubstituted fluoranthene ring, a substituted or unsubstituted phenanthrene ring, a substituted or unsubstituted benzophenanthrene ring, a substituted or unsubstituted dibenzophenanthrene ring, a substituted or unsubstituted triphenylene ring, a substituted or unsubstituted benzo[a]triphenylene ring, a substituted or unsubstituted benzochrysene ring, a substituted or unsubstituted benzo[b]fluoranthene ring and a substituted or unsubstituted picene ring; and
p is 0 or 1. - View Dependent Claims (10, 11)
- Ar1, Ar2, Ar3, B1, B2, B3 and B4 each represent a substituted or unsubstituted benzene ring or a condensed aromatic hydrocarbon ring selected from a substituted or unsubstituted naphthalene ring, a substituted or unsubstituted chrysene ring, a substituted or unsubstituted fluoranthene ring, a substituted or unsubstituted phenanthrene ring, a substituted or unsubstituted benzophenanthrene ring, a substituted or unsubstituted dibenzophenanthrene ring, a substituted or unsubstituted triphenylene ring, a substituted or unsubstituted benzo[a]triphenylene ring, a substituted or unsubstituted benzochrysene ring, a substituted or unsubstituted benzo[b]fluoranthene ring and a substituted or unsubstituted picene ring; and
Specification