BLUE HOST MATERIAL ORGANIC ELECTROLUMINESCENCE DEVICE AND APPLICATION THEREOF

摘要

The present invention relates to a light emitting material and, more specifically, to a blue host or dopant material, and an organic electroluminescent device and an application thereof. According to the present invention, the blue host or dopant material is expressed by chemical formula, wherein R_1 is a hydrogen or a derivative of a phenyl, pyridine, naphthalene, phenanthrene, anthracene, phenanthridine, biphenyl, pyridinyl, or triazinyl group, R_2 is a hydrogen, alkyl or phenyl with a straight or branch chain of C1 to C20, or a derivative of a pyridine, naphthalene, phenanthrene, anthracene, phenanthridine, biphenyl, pyridinyl, or triazinyl group, R_3 is a hydrogen or a derivative of a phenyl, pyridine, naphthalene, phenanthrene, anthracene, phenanthridine, biphenyl, pyridinyl, pyrimidinyl, or triazinyl group, and R_4 is a hydrogen, alkyl or phenyl with a straight or branch chain of C1 to C20, or a derivative of a pyridine, naphthalene, phenanthrene, anthracene, phenanthridine, biphenyl, pyridinyl, pyrimidinyl, or triazinyl group. Accordingly, when such compound is applied to a light emitting device, light emitting efficiency and lifetime of the device can be increased.