A new class of compounds containing aza-dibenzothiophene or aza-dibenzofuran are provided. The compounds may be used in organic light emitting devices giving improved stability, improved efficiency, long lifetime and low operational voltage. In particular, the compounds may be used as the host material of an emissive layer having a host and an emissive dopant, or as a material in an enhancement layer.
提供了一类含有氮杂
二苯并噻吩或氮杂
二苯并呋喃的化合物。这些化合物可以用于有机发光器件,具有更好的稳定性、效率、寿命长和低操作电压。特别地,这些化合物可以用作发射层的主体材料,其中包括主体和发射掺杂剂,或者用作增强层的材料。