| 摘要 |
PROBLEM TO BE SOLVED: To provide a red-color electroluminescent element which has a high utilization efficiency of electric energy, and which is superior in the chromatic purity compared with previous ones. SOLUTION: Specific aromatic amine derivatives and dibenzo [f,f']-4,4',7,7'- tetraphenyl}diindenol[1,2,3-cd:1'2',3'-lm]perylene derivatives which are red luminescent material are mixed and used in a luminous layer 5.
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