摘要
利用金属介电函数的Drude模型以及电磁场耦合理论,计算分析了Purcell因子对表面等离子激元(surface plasmon polaritons,SPP)增强自发辐射的影响.结果表明,对于由Ag或Au金属层和电介质层构成的半导体发光二极管系统,当Purcell因子为负值时,SPP将对自发辐射发光效率产生很大的增强作用.
The Purcell factor＇s influence on spontaneous emission enhanced by surface plasmon polaritons（SPP） has been calculated and analyzed in the paper. It is shown from the calculation results that the luminescence efficiency of spontaneous emission can be enhanced greatly by SPP, when the Purcell factor in the LED system is negative, which is formed by Ag or Au metallic layer and dielectric layer.
出处
《武汉大学学报（理学版）》
CAS
CSCD
北大核心
2009年第4期417-420,共4页
Journal of Wuhan University:Natural Science Edition
基金
国家自然科学基金资助项目(10704052)
