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.
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.
New materials with aza-dibenzothiophene or aza-dibenzofuran core for pholed
申请人:Universal Display Corporation
公开号:EP2703405A2
公开(公告)日:2014-03-05
The present invention is directed at a new class of compounds containing an azadibenzothiophene or aza-dibenzofuran core are provided. In particular, azadibenzothiophene compounds or aza-dibenzofuran compounds further substituted with triphenylene and/or nitrogen-containing substituents are provided. These compounds may be advantageously used in phosphorescent organic light emitting devices. Preferably, these compounds may be used as a host material in an emissive layer or as a material in an enhancement layer.