High-efficiency deep blue host for organic light-emitting devices
High-efficiency deep blue host for organic light-emitting devices
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DOI：
10.1063/1.2715041
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发表时间：
2007-03-19
影响因子：
4
通讯作者：
Wen, Wen-Shih
中科院分区：
文献类型：
--
作者：
Gao, Zhi Qiang;Mi, Bao Xiu;Wen, Wen-Shih
以不对称取代的9-（α-萘基）-10-（β-萘基）-蒽为蓝色基质材料，二苯基-[4-（2-[1，1（'）;4（'），1（'）]三联苯-4-基-乙烯基）-苯基]胺为掺杂发光体，制备了高效率的深蓝色有机电致发光器件。在优化器件结构和掺杂浓度的条件下，当电流密度为20 mA/cm（2），饱和蓝色坐标为（0.15，0.13）时，深蓝色电致发光器件的电致发光效率为4.9 cd/A，外量子效率为4.4%。深蓝色器件还具有电流效率，其在10至100 mA/cm（2）的驱动条件下不变。(c)2007年，美国物理学会。
High-efficiency deep blue organic light-emitting devices have been fabricated using asymmetrically substituted 9-(alpha-naphthyl)-10-(beta-naphthyl)-anthracene as blue host material and diphenyl-[4-(2-[1,1(');4('),1(')]terphenyl-4-yl-vinyl)-phenyl]amine as dopant emitter. With an optimized device structure and doping concentration, the deep blue electroluminescent (EL) device achieved an EL efficiency of 4.9 cd/A and an external quantum efficiency of 4.4% at a current density of 20 mA/cm(2) at saturated blue Commission Internationale de l'Eclairage coordinates of (0.15, 0.13). The deep blue device also has a current efficiency which is invariable with driving conditions ranging from 10 to 100 mA/cm(2). (c) 2007 American Institute of Physics.