| 摘要 |
PURPOSE: An organic light emitting compound containing a pyrazoline group and an organic electroluminescence device using the compound are provided, wherein the compound emits the blue light of a high quality, shows high efficiency and heat resistance and an improved lifetime. CONSTITUTION: The organic light emitting compound is represented by the formula 2, wherein X is at least one aryl group combined with nitrogen, having C18-C50; n is an integer of 2-4; and R1 and R2 are identical or different each other and are H, SO2R, CO2R, SR, OR, NR2, CN, a halogen atom or Ph-R3 (wherein R3 is H, SO2R, CO2R, SR, OR or NR2, and R is an alkyl group of C1-C10). The organic electroluminescence device comprises a first electrode having a high work function; a second electrode having a low work function; and at least one organic compound layer which is placed between the first and second electrodes and comprises the organic compound of the formula 2. Preferably the organic compound layer is an organic light emitting layer and/or a hole transport layer. |
