Provided is an organic light emitting element including: an anode; a cathode; and an organic compound layer formed between the anode and the cathode and including a hole injection layer, a hole transport layer, and an emission layer, in which: the emission layer includes a host and a dopant; the hole transport layer includes a hole transport material having multiple aromatic hydrocarbon skeletons and a single bond for linking the aromatic hydrocarbon skeletons; the hole transport material has a triplet level T1 of 1.8 eV or more; the hole transport material has a hole mobility of 1×10−5 cm2/Vs or more; and the hole transport layer and the emission layer satisfy relationships represented by the following expression (1):
|reduction potential of hole transport material|−|reduction potential of host|>0.1 V (1)
and the following expression (2):
|HOMO level of hole transport material−HOMO level of host|<0.1 eV (2).
提供了一种有机发光元件,包括:阳极;阴极;以及形成于阳极和阴极之间的有机化合物层,包括空穴注入层、空穴传输层和发射层,其中:发射层包括宿主和掺杂剂;空穴传输层包括具有多个
芳香烃骨架和用于连接
芳香烃骨架的单键的空穴传输材料;空穴传输材料的三重态电平T1为1.8eV或更高;空穴传输材料的空穴迁移率为1×10-5 cm2/Vs或更高;空穴传输层和发射层满足以下表达式(1)所表示的关系:
|空穴传输材料的还原电位|-|宿主的还原电位|>0.1 V (1)
和以下表达式 (2):
|空穴传输材料的高电平-宿主的高电平|<0.1 eV (2)。