Red Fluorescent Donor-π-Acceptor Type Materials based on Chromene Moiety for Organic Light-Emitting Diodes
作者： Jhin-Yeong Yoon , Jeong Seob Lee , Seung Soo Yoon , Young Kwan Kim
DOI: 10.5012/BKCS.2014.35.6.1670
关键词:
摘要: Two red emitters, 2-(7-(4-(diphenylamino)styryl)-2-methyl-4H-chromen-4-ylidene)malonitrile (Red 1) and 2(7-(julolidylvinyl)-2-methyl-4H-chromen-4-ylidene)malonitrile 2) have been designed synthesized for application as red-light emitters in organic light emitting diodes (OLEDs). In these the julolidine triphenyl moieties were introduced to core electron donors, chromederived accepting groups such 2-methyl-(4H-chromen-4-ylidene)malononitrile connected donating by vinyl groups. To explore electroluminescence properties of materials, multilayered OLEDs using materials 1 Red dopants Alq3 host fabricated. particular, a device dopant material showed maximum luminous efficiencies power 0.82 cd/A 0.33 lm/W at 20 mA/cm 2 . Also, presented CIEx,y coordinates (0.67, 0.32) 7.0 V.
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