Organic light-emitting element and composition for organic material layer thereof
The present specification relates to an organic light emitting device including Compound (A) represented by Chemical Formula 1 and Compound (B) represented by any one of Chemical Formulae 2 to 4.
1 . An organic light emitting device comprising:
a first electrode;
a second electrode and
one or more organic material layers provided between the first electrode and the second electrode,
wherein one or more layers of the organic material layers include Compound (A) represented by the following Chemical Formula 1 and Compound (B) represented by any one of the following Chemical Formulae 2 to 4:
in Chemical Formula 1,
X1 is O; S; or NR;
R1 to R10 are each independently selected from the group consisting of hydrogen; deuterium; a halogen group; a cyano group; a substituted or unsubstituted alkyl group having 1 to 60 carbon atoms; a substituted or unsubstituted alkenyl group having 2 to 60 carbon atoms; a substituted or unsubstituted alkynyl group having 2 to 60 carbon atoms; a substituted or unsubstituted alkoxy group having 1 to 60 carbon atoms; a substituted or unsubstituted cycloalkyl group having 3 to 60 carbon atoms; a substituted or unsubstituted heterocycloalkyl group having 2 to 60 carbon atoms; a substituted or unsubstituted aryl group having 6 to 60 carbon atoms; a substituted or unsubstituted heteroaryl group having 2 to 60 carbon atoms; a substituted or unsubstituted phosphine oxide group; and a substituted or unsubstituted amine group, or adjacent two or more groups bond to form a substituted or unsubstituted ring;
at least one of R1 to R10 is —N-Het, and at least one of the rest of R1 to R10 is -(L) m -Ar;
L is a direct bond; a substituted or unsubstituted arylene group having 6 to 60 carbon atoms; or a substituted or unsubstituted heteroarylene group having 2 to 60 carbon atoms;
Ar is a substituted or unsubstituted aryl group having 6 to 60 carbon atoms; a substituted or unsubstituted heteroaryl group having 2 to 60 carbon atoms; or a substituted or unsubstituted amine group;
N-Het is a monocyclic or polycyclic heteroaryl group having 2 to 60 carbon atoms substituted or unsubstituted, and including one or more Ns;
R is a substituted or unsubstituted aryl group having 6 to 60 carbon atoms;
m is an integer of 1 to 5; and
when m is an integer of 2 or greater, substituents in the parentheses are the same as or different from each other,
in Chemical Formulae 2 to 4,
X2 is O or S;
X3 and X4 are each independently O; S; or CR′R″;
L1 to L6 are each independently a direct bond; a substituted or unsubstituted arylene group having 6 to 60 carbon atoms; or a substituted or unsubstituted heteroarylene group having 2 to 60 carbon atoms;
l1 to l6 are each independently an integer of 1 to 5;
A1 to A4 are each independently a halogen group; a cyano group; a substituted or unsubstituted alkyl group having 1 to 60 carbon atoms; a substituted or unsubstituted cycloalkyl group having 3 to 60 carbon atoms; a substituted or unsubstituted aryl group having 6 to 60 carbon atoms; a substituted or unsubstituted heteroaryl group having 2 to 60 carbon atoms; or a substituted or unsubstituted amine group;
A5 and A6 are each independently hydrogen; deuterium; a halogen group; a cyano group; a substituted or unsubstituted alkyl group having 1 to 60 carbon atoms; a substituted or unsubstituted cycloalkyl group having 3 to 60 carbon atoms; a substituted or unsubstituted aryl group having 6 to 60 carbon atoms; or a substituted or unsubstituted heteroaryl group having 2 to 60 carbon atoms, or A5 and A6 bond to form a substituted or unsubstituted ring;
R′, R″ and R31 are each independently hydrogen; deuterium; a halogen group; a cyano group; a substituted or unsubstituted alkyl group having 1 to 60 carbon atoms; a substituted or unsubstituted cycloalkyl group having 3 to 60 carbon atoms; a substituted or unsubstituted aryl group having 6 to 60 carbon atoms; or a substituted or unsubstituted heteroaryl group having 2 to 60 carbon atoms;
Het is a substituted or unsubstituted aryl group having 6 to 60 carbon atoms; or a substituted or unsubstituted heteroaryl group having 2 to 60 carbon atoms;
r31 is an integer of 1 to 4; and
when l1 to l6 and r31 are each 2 or greater, substituents in the parentheses are the same as or different from each other.
2 . The organic light emitting device of claim 1 , wherein Chemical Formula 1 is represented by the following Chemical Formula 1-1:
in Chemical Formula 1-1,
X1, R1 to R4, R9 and R10 each have the same definitions as in Chemical Formula 1;
any one of R1 to R4 is —N-Het or -(L) m -Ar;
i) when any one of R1 to R4 is —N-Het, any one of R9 and R10 is -(L) m -Ar;
ii) when any one of R1 to R4 is -(L) m -Ar, any one of R9 and R10 is —N-Het; and
N-Het, L, Ar and m each have the same definitions as in Chemical Formula 1.
3 . The organic light emitting device of claim 1 , wherein Chemical Formula 2 is represented by the following Chemical Formula 2-1:
In Chemical Formula 2-1,
X2, Het, L1 and l1 have the same definitions as in Chemical Formula 2;
L11 and L12 are each independently a direct bond; a substituted or unsubstituted arylene group having 6 to 60 carbon atoms; or a substituted or unsubstituted heteroarylene group having 2 to 60 carbon atoms; and
A11 and A12 are each independently a substituted or unsubstituted aryl group having 6 to 60 carbon atoms; or a substituted or unsubstituted heteroaryl group having 2 to 60 carbon atoms.
4 . The organic light emitting device of claim 1 , wherein Chemical Formula 3 is represented by the following Chemical Formula 3-1:
in Chemical Formula 3-1,
X3, R31, r31, L2 and l2 have the same definitions as in Chemical Formula 3;
L21 and L22 are each independently a direct bond; a substituted or unsubstituted arylene group having 6 to 60 carbon atoms; or a substituted or unsubstituted heteroarylene group having 2 to 60 carbon atoms;
A21 and A22 are each independently a substituted or unsubstituted aryl group having 6 to 60 carbon atoms; or a substituted or unsubstituted heteroaryl group having 2 to 60 carbon atoms; and
R32 and R33 are each independently a substituted or unsubstituted alkyl group having 1 to 60 carbon atoms; or a substituted or unsubstituted aryl group having 6 to 60 carbon atoms.
5 . The organic light emitting device of claim 1 , wherein Chemical Formula 4 is represented by the following Chemical Formula 4-1:
in Chemical Formula 4-1,
each substituent has the same definition as in Chemical Formula 4.
6 . The organic light emitting device of claim 1 , wherein Chemical Formula 1 is represented by any one of the following compounds:
7 . The organic light emitting device of claim 1 , wherein Chemical Formula 2 is represented by any one of the following compounds:
8 . The organic light emitting device of claim 1 , wherein Chemical Formula 3 is represented by any one of the following compounds:
9 . The organic light emitting device of claim 1 , wherein Chemical Formula 4 is represented by any one of the following compounds:
10 . The organic light emitting device of claim 1 , wherein the organic material layer includes a light emitting layer, and the light emitting layer includes Compound (A) and Compound (B).
11 . The organic light emitting device of claim 1 , wherein the organic material layer includes a light emitting layer, the light emitting layer includes a host, and the host includes Compound (A) and Compound (B).
12 . The organic light emitting device of claim 1 , wherein Compound (A) and Compound (B) are included in a weight ratio of 1:10 to 10:1.
13 . The organic light emitting device of claim 1 , further comprising one, two or more layers selected from the group consisting of a light emitting layer, a hole injection layer, a hole transfer layer, an electron injection layer, an electron transfer layer, an electron blocking layer and a hole blocking layer.
14 . A composition for an organic material layer of an organic light emitting device, the composition comprising:
Compound (A) represented by the following Chemical Formula 1; and
Compound (B) represented by any one of the following Chemical Formulae 2 to 4:
wherein, in Chemical Formula 1,
X1 is O; S; or NR;
R1 to R10 are each independently selected from the group consisting of hydrogen; deuterium; a halogen group; a cyano group; a substituted or unsubstituted alkyl group having 1 to 60 carbon atoms; a substituted or unsubstituted alkenyl group having 2 to 60 carbon atoms; a substituted or unsubstituted alkynyl group having 2 to 60 carbon atoms; a substituted or unsubstituted alkoxy group having 1 to 60 carbon atoms; a substituted or unsubstituted cycloalkyl group having 3 to 60 carbon atoms; a substituted or unsubstituted heterocycloalkyl group having 2 to 60 carbon atoms; a substituted or unsubstituted aryl group having 6 to 60 carbon atoms; a substituted or unsubstituted heteroaryl group having 2 to 60 carbon atoms; a substituted or unsubstituted phosphine oxide group; and a substituted or unsubstituted amine group, or adjacent two or more groups bond to form a substituted or unsubstituted ring;
at least one of R1 to R10 is —N-Het, and at least one of the rest of R1 to R10 is -(L) m -Ar;
L is a direct bond; a substituted or unsubstituted arylene group having 6 to 60 carbon atoms; or a substituted or unsubstituted heteroarylene group having 2 to 60 carbon atoms;
Ar is a substituted or unsubstituted aryl group having 6 to 60 carbon atoms; a substituted or unsubstituted heteroaryl group having 2 to 60 carbon atoms; or a substituted or unsubstituted amine group;
N-Het is a monocyclic or polycyclic heteroaryl group having 2 to 60 carbon atoms substituted or unsubstituted, and including one or more Ns;
R is a substituted or unsubstituted aryl group having 6 to 60 carbon atoms;
m is an integer of 1 to 5; and
when m is an integer of 2 or greater, substituents in the parentheses are the same as or different from each other,
in Chemical Formulae 2 to 4,
X2 is 0 or S;
X3 and X4 are each independently O; S; or CR′R″;
L1 to L6 are each independently a direct bond; a substituted or unsubstituted arylene group having 6 to 60 carbon atoms; or a substituted or unsubstituted heteroarylene group having 2 to 60 carbon atoms;
l1 to l6 are each independently an integer of 1 to 5;
A1 to A4 are each independently a halogen group; a cyano group; a substituted or unsubstituted alkyl group having 1 to 60 carbon atoms; a substituted or unsubstituted cycloalkyl group having 3 to 60 carbon atoms; a substituted or unsubstituted aryl group having 6 to 60 carbon atoms; a substituted or unsubstituted heteroaryl group having 2 to 60 carbon atoms; or a substituted or unsubstituted amine group;
A5 and A6 are each independently hydrogen; deuterium; a halogen group; a cyano group; a substituted or unsubstituted alkyl group having 1 to 60 carbon atoms; a substituted or unsubstituted cycloalkyl group having 3 to 60 carbon atoms; a substituted or unsubstituted aryl group having 6 to 60 carbon atoms; or a substituted or unsubstituted heteroaryl group having 2 to 60 carbon atoms, or A5 and A6 bond to form a substituted or unsubstituted ring;
R′, R″ and R31 are each independently hydrogen; deuterium; a halogen group; a cyano group; a substituted or unsubstituted alkyl group having 1 to 60 carbon atoms; a substituted or unsubstituted cycloalkyl group having 3 to 60 carbon atoms; a substituted or unsubstituted aryl group having 6 to 60 carbon atoms; or a substituted or unsubstituted heteroaryl group having 2 to 60 carbon atoms;
Het is a substituted or unsubstituted aryl group having 6 to 60 carbon atoms; or a substituted or unsubstituted heteroaryl group having 2 to 60 carbon atoms;
r31 is an integer of 1 to 4; and
when l1 to l6 and r31 are each 2 or greater, substituents in the parentheses are the same as or different from each other.