申请人:Samsung Display Co., Ltd.
公开号:US11527725B2
公开(公告)日:2022-12-13
An organic light-emitting device having improved efficiency and lifespan includes: a first electrode, a second electrode, and an organic layer between the first electrode and the second electrode, wherein the organic layer includes an emission layer, the emission layer includes a first compound, a second compound, a third compound, and a fourth compound, the first compound, the second compound, the third compound, and the fourth compound are different from each other, the third compound includes a metal element having an atomic number of 40 or more, the fourth compound includes boron (B), the third compound and the fourth compound each satisfy Conditions 1-1 and 1-2 below, and the fourth compound satisfies Condition 2 or 3:
T
1
(
C
3
)
onset
≥S
1
(
C
4
)
onset
Condition
1
-
1
T
1
(
C
3
)
max
≥S
1
(
C
4
)
max
Condition
1
-
2
K
RISC
(
C
4
)≥
10
3
S
−1
Condition
2
f
(
C
4
)≥
0.1.
Condition
3
一种具有更高的效率和寿命的有机发光器件包括第一电极、第二电极和位于第一电极与第二电极之间的有机层,其中有机层包括发射层,发射层包括第一化合物、第二化合物、第三化合物和第四化合物,第一化合物、第二化合物、第三化合物和第四化合物彼此不同,第三化合物包括原子序数为 40 或以上的金属元素,第四化合物包括硼 (B),第三化合物和第四化合物各自满足以下条件 1-1 和 1-2,且第四化合物满足条件 2 或 3:
T
1
(
C
3
)
发生
≥S
1
(
C
4
)
发病
条件
1
-
1
T
1
(
C
3
)
最大
≥S
1
(
C
4
)
最大值
条件
1
-
2
K
RISC
(
C
4
)≥
10
3
S
-1
条件
2
f
(
C
4
)≥
0.1.
条件
3