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一种双亚单层的有机白色发光器件

Study on White OLEDs with Dual Sub-monolayer
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摘要 制备了一种多层有机电致发光器件,其结构为ITO/m-MTDATA(45nm)/NPB(10nm)/DPVBi(15nm)/C545T(Xnm)/DCM2(Ynm)/Bhen(20nm)/Alq3(15nm)/LiF(1.0nm)/Al(200nm)。荧光材料C545T和DCM2以亚单层的方式插入蓝光发光层DPVBi后,通过改变双亚单层的厚度,观察器件性能的变化。当X/Y=0.05nm/0.05nm时,器件在8V的电压下最大发光效率是5.50cd/A,在13V的电压下最大的亮度是12 980cd/m2。研究了亚单层厚度的变化对器件的发光亮度、效率和光谱的影响。从实验结果中对比分析了三种器件的电流密度-电压曲线、亮度-电压曲线、电致发光光谱图和色坐标。从其中总结规律,对有机发光器件制作有一定的指导作用。 One kind of organic light-emitting diodes(OLED) with the multilayer structure of ITO / m-MTDATA(45 nm) / NPB(10 nm) / DPVBi(15 nm) / C545T(X nm) / DCM2(Y nm) / Bhen(20 nm) / Alq3(15 nm)/LiF(1.0 nm)/Al(200 nm) was prepared.The fluorescent materials of C545T and DCM2 as dual sub-monolayers were inserted into the blue luminous layer of DPVBi.By changing the thickness ratio of X/Y,the performance of the devices was tested.It is shown that as X/Y is 0.05 nm/0.05 nm,the maximum luminous efficiency is 5.50 cd/A at 8 V and the highest brightness is 12 980 cd/m2 at 13 V.The effects of different thickness of sub-monolayers on the luminous efficiency,brightness and spectrum are analyzed.
出处 《半导体光电》 CAS CSCD 北大核心 2012年第5期632-635,共4页 Semiconductor Optoelectronics
基金 福建省自然基金资助项目(2011J01359) 福建省教育厅JK类科研项目(JK2011043) 泉州市科技局基金项目(2011G16)
关键词 有机发光器件 效率 亮度 OLED efficiency brightness
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