摘要
提出一种用于有机电致发光器件(OLED)的双面对称矩形金属光栅电极,采用时域有限差分方法(FDTD)模拟研究了OLED中表面等离子体激元的激发和耦合传输的物理规律和物理机制,详细计算和分析了该光栅结构的周期、槽宽、光栅高度、槽底厚度、入射光的入射角与电极透射效率的关系,并由此优化了结构的几何参数,使金属电极的光导出效率相对于通常的金属银层电极增强了1.77倍,为基于表面等离子体激元的高效光导出器件的优化设计提供了理论依据。
A kind of two-sided symmetrical rectangular metal gratings used in OLED structures as electrode is proposed.The exciting,coupling and transmiting of Surface plasmon polaritons are similated and analyzed with Finite-difference Time-domain（FDTD） method.Particularly the relation of light-output efficiency and periods,the groove width,the grating height,the thickness of the metal film,the angel of incident light are analyzed,respectively.By optimizing this grating’s parameters,its transmissivity can be 1.77 times of traditional metal electrode.Providing technical and theoretic support to the desigh of high efficiency light out-coupling devices based on surface plasmon polaritons.
出处
《发光学报》
EI
CAS
CSCD
北大核心
2010年第6期784-790,共7页
Chinese Journal of Luminescence
基金
国家自然科学基金(61078047
60676024)
国家"973"项目(2006CB302902)
教育部博士点基金(20060610006)资助项目
