Compound and organic light emitting device including the same
Disclosed is a novel compound and an organic light-emitting device. The novel compound is represented by the following Chemical Formula 1, and when the novel compound is used as a material for a hole transport layer of an organic light emitting device, the novel compound allows the device to have lowered drive voltage, and improved efficiency and lifespan characteristics.
1. An organic light-emitting device comprising:
a first electrode;
a second electrode; and
at least one organic material layer between the first and second electrodes,
wherein the organic material layer includes a hole transport layer,
wherein the hole transport layer contains a compound which is represented by one of the following Chemical Formulas:
2. The organic light-emitting device of claim 1 , wherein the organic material layer further includes at least one layer selected from a group consisting of a hole injection layer, an auxiliary hole transport layer, a light-emitting layer, an auxiliary electron transport layer, an electron transport layer, and an electron injection layer.
3. The organic light-emitting device of claim 2 , wherein the compound of the selected at least one layer contains at least two types of compounds.
4. The organic light-emitting device of claim 1 , wherein the organic light-emitting device further comprises an encapsulation layer formed on the second electrode.
5. The organic light-emitting device of claim 4 , wherein the organic light-emitting device further comprises a barrier layer formed on the encapsulation layer.
6. The organic light-emitting device of claim 1 , wherein the organic light-emitting device further comprises a driving thin-film transistor including an active layer electrically connected to the first electrode.
7. The organic light-emitting device of claim 6 , wherein the active layer includes an oxide semiconductor layer.
8. The organic light-emitting device of claim 6 , wherein the driving thin-film transistor includes a gate insulating film formed on the active layer, and a gate electrode formed on the gate insulating film.
9. An organic light-emitting display device comprising the organic light-emitting device of claim 1 .