ORGANIC LIGHT-EMITTING DEVICE

摘要

An organic light-emitting device includes an anode, a cathode, and an organic layer between the anode and the cathode, wherein the organic layer includes a mixed organic layer, and the mixed organic layer includes at least two different compounds, and a triplet energy of at least one compound of the at least two different compounds is 2.2 eV or higher. The organic light-emitting device according to embodiments of the present invention may have a low driving voltage, a high efficiency, and a long lifespan.

主权项

1. An organic light-emitting device comprising
an anode; a cathode; and an organic layer between the anode and the cathode and comprising an emission layer (EML), a hole transport region between the anode and the EML and comprising at least one selected from a hole injection layer (HIL), a hole transport layer (HTL), a buffer layer, and an electron blocking layer (EBL), and an electron transport region between the EML and the cathode and comprising at least one selected from a hole blocking layer (HBL), an electron transport layer (ETL), and an electron injection layer (EIL), wherein a mixed organic layer is between the entire EML and the electron transport region and comprises at least two different compounds, a triplet energy of at least one compound of the at least two different compounds being 2.2 eV or greater.