OLEDs with a monolayer of polystyrene microspheres

摘要：

An ordered monolayer of polyethylene (PS) microspheres (MS) with diameter of around 3 μm was prepared by self-assembly method on microscope cover glass. The PS MS monolayer was optically coupled (by refractive-index-matched material) on the outside of an OLED, with structure of Glass/ITO (40 nm)/NPB (40 nm)/Alq3 (60 nm)/LiF (1 nm)/Al (100 nm) as a light scattering layer. We found that the OLED with a monolayer of PS MS exhibit improved (about 50％) front space luminous flux compared to the control devices, which indicates that part of the light confined wave-guided within the substrates can be extracted to the front space through scattering effects of the monolayer of PS MS. We also found that the PS MS monolayer has no effects on the electroluminescence spectrum distribution with viewing angle.

关键词： OLEDs microspheres monolayer light eztraction

作者: Xiaoping Qiao Xiang Zhou

作者单位: State Key Lab of Optoelectronic Materials and Technologies,Sun Yat-Sen University, Guangzhou, 510275 State Key Lab of Optoelectronic Materials and Technologies, Sun Yat-Sen University, Guangzhou, 51027

会议类型: 国际会议

会议名称: The 11th Asian Symposium on Information Display(ASID09)(第11届亚洲信息显示会议)

会议地点: 广州

会议语种:英文

页码: 245-247

在线出版日期: 2009-10-07（万方平台首次上网日期，不代表论文的发表时间）