Patent ID: 8319421

Claim:
An organic light-emitting laminate for use in an organic electroluminescent device, characterized in comprising: a first light-emitting layer, including a first main light-emitting material and a first phosphorescent material, a second light-emitting layer, including a second main light-emitting material and a second phosphorescent material, formed on the first light-emitting layer, and a carrier-transporting material, which is doped in both of the first light-emitting layer and the second light-emitting layer; wherein the first main light-emitting material, the second main light-emitting material and the carrier-transporting material each have a triplet energy level higher than that of the first phosphorescent material and the second phosphorescent material; wherein the second phosphorescent material is different from the first phosphorescent material; wherein the carrier-transporting material is not used as the first main light-emitting material and the second main light-emitting material; and wherein the first phosphorescent material is selected from a group consisting of or a mixture thereof, and wherein A3 is acetylacetonate or pyridine-α-carboxylate.