Efficient blue organic light-emitting diode using anthracene-derived emitters based on polycyclic aromatic hydrocarbons
作者:Jong-Kwan Bin、Jong-In Hong
DOI:10.1016/j.orgel.2011.02.011
日期:2011.5
light-emitting materials based on polycyclic aromatic hydrocarbons (PAHs) for use in blue organic light-emitting diodes (OLEDs). 9-(Phenanthryl)-10-(3-(9-phenylcarbazole-9-yl)anthracene (PPCA) acts as the host and 9,10-bis-biphenyl-4-yl-2,6-diphenylanthracene (BDA) acts as the dopant. PPCA contains an electron-transporting phenanthrene moiety and a hole-transporting 9-phenyl-9H-carbazole moiety in the anthracene
我们已经合成了两种基于多环芳烃(PAH)的发光材料,用于蓝色有机发光二极管(OLED)。9-(菲基)-10-(3-(9-苯基咔唑-9-基)蒽(PPCA)充当主体,9,10-双-联苯基-4-基-2,6-二苯基蒽(BDA)充当PPCA在蒽核心中包含一个电子传输菲部分和一个空穴传输9-苯基-9H-咔唑部分。BDA在蒽核心中包含无氨基取代基的PAH。优化的器件结构ITO / DNTPD( 600Å)/α-NPB(300Å)/ PPCA:BDA 5 wt。%(250Å)/ N1PP(300Å)/ LiF(5Å)/ Al(1000Å),特征在于蓝色电致发光(EL) ,电流效率为6.9 cd / A,功率效率为3.23 lm / W,在10 mA / cm 2时的外部量子效率为5.1% 和CIE坐标为(0.15,0.18)。