ORGANIC LIGHT EMITTING DEVICE AND DELAYED FLUORESCENT MATERIAL AND COMPOUND USED THEREIN

摘要

An organic light emitting device which contains a compound expressed in the following general formula in a luminous layer has high luminous efficiency [A ring which contains Y1 through Y3 is a triazine ring or a pyrimidine ring, Z1, Z2, and R1 through R8 are a hydrogen atom or a substituent, at least one of R1 through R8 is a diarylamino group or a carbazolyl group. The compound expressed in the general formula (1) contains at least two carbazole structures in a molecule].