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Electroluminescence Device Material

No.116(April 2003)
4,4'-Bis[di(3,5-xylyl)amino]-4''-phenyltriphenylamine  (1)
4,4'-Bis[N-(1-naphthyl)-N-phenylamino]-4''-phenyltriphenylamine  (2)
N,N'-Bis(p-biphenyl-3-yl)-N,N'-bis(p-terphenyl-3-yl)benzidine  (3)
Electroluminescence (EL) devices have been of increasing interest as the emission devices for next generation displays. Studies directed towards achieving high efficiency in the device and to improve it's driving lifetime have actively been undertaken. One of those studies has reported an EL device using compounds 1-3. In this example, an EL device using 1 or 2 as a hole injection layer material has a longer driving lifetime compared to conventional ones. In addition, the device had good heat-resistant properties. Also, compound 3 is attracting attention as an excellent hole transport layer material.


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