Organic light emitting device

An organic light emitting device, comprising:

• a substrate;
• and
• an organic light emitting diode positioned on the substrate, the organic light emitting diode including:
• a first electrode;
• a second electrode facing the first electrode;
• a first emitting material layer including a first dopant of a boron derivative and a first host of an anthracene derivative and positioned between the first electrode and the second electrode;
• a first electron blocking layer including an electron blocking material and positioned between the first electrode and the first emitting material layer;
• and
• a first hole blocking layer including a hole blocking material and positioned between the second electrode and the first emitting material layer,
• wherein the first dopant is represented by Formula 4:
• wherein the first host is one of compound in Formula 5:
• wherein the electron blocking material is represented by Formula 3:
• wherein in Formula 3, L is arylene group, and a is 0 or 1, and
• wherein each of R1 and R2 is independently selected from the group consisting of unsubstituted or substituted C6 to C30 aryl group and unsubstituted or substituted C5 to C30 heteroaryl group.