Provided is an organic light emitting device including a cathode; an anode provided opposite to the cathode; a light emitting layer provided between the cathode and the anode; and an organic material layer provided between the cathode and the light emitting layer, and including Compound (A) including a heteroatom and a cyano group, wherein Compound (A) satisfies Equation 1 and Equation 2:
|PElCN|≥3debye Equation 1
wherein:
|PElCN| means an absolute value of a dipole moment of Compound (A);
P
EI
C
N
P
EI
>
Ea
EI
CN
Ea
EI
Equation
2
wherein:
|PElCN| means an absolute value of a dipole moment of Compound (A);
|PEl| means an absolute value of a dipole moment of a compound having the same core as the compound of |PElCN| without including a cyano group;
|EaElCN| means an absolute value of electron affinity of Compound (A); and
|EaEl| means an absolute value of electron affinity of a compound having the same core as the compound of |EaElCN| without including a cyano group.
本发明提供了一种有机发光器件,包括阴极;与阴极相对设置的阳极;设置在阴极和阳极之间的发光层;以及设置在阴极和发光层之间的有机材料层,并包括包含杂原子和
氰基的化合物(A),其中化合物(A)满足等式 1 和等式 2:
|PElCN|≥3debye等式1
其中
|PElCN|指化合物 (A) 偶极矩的绝对值;
P
EI
C
N
P
EI
>
Ea
EI
CN
Ea
EI
等式
2
其中
|PElCN|指化合物(A)偶极矩的绝对值;
|PEl|指与|PElCN|化合物具有相同核心但不含
氰基的化合物的偶极矩的绝对值;
|EaElCN|指化合物 (A) 电子亲和力的绝对值;以及
|EaEl|指具有与|EaElCN|化合物相同核心但不含
氰基的化合物的电子亲和力绝对值。