Effect of surface plasmon coupling with radiating dipole on the polarization characteristics of AlGaN-based light-emitting diodes

作     者：Yi Li Mei Ge Meiyu Wang Youhua Zhu Xinglong Guo 李毅;葛梅;王美玉;朱友华;郭兴龙

作者机构：School of Information Science and Technology&Tongke School of MicroelectronicsNantong UniversityNantong 226019China 

出 版 物：《Chinese Physics B》 (中国物理B（英文版）)

年 卷 期：2022年第31卷第7期

页      面：573-578页

核心收录：

学科分类：07[理学] 08[工学] 0805[工学-材料科学与工程（可授工学、理学学位）] 070204[理学-等离子体物理] 0704[理学-天文学] 0803[工学-光学工程] 0702[理学-物理学] 

基　　金：the National Nature Science Foundation of China(Grant Nos.62004109,61874168,and 62074086) Jiangsu Provincial Double-Innovation Doctor Program,Development of antibacterial multifunctional PVC facing new material technology(Grant No.21ZH626) 

主　　题：surface plasmon AlGaN-based light emitting diodes FDTD K-P method 

摘      要：The optical polarization characteristics of surface plasmon(SP)coupled Al Ga N-based light emitting diodes(LEDs)are investigated theoretically by analyzing the radiation recombination process and scattering process *** the Al_(0.5)Ga_(0.5)N/Al/Al_(2)O_(3)slab structure,the relative intensity of TE-polarized and TM-polarized spontaneous emission(SE)rate into the SP mode obviously depends on the thickness of the Al *** calculation results show that TM dominated emission will be transformed into TE dominated emission with the decrease of the Al thickness,while the emission intensities of both TE/TM polarizations will decrease *** addition,compared with TM polarized emission,TE polarized emission is easier to be extracted by SP *** the Al_(0.5)Ga_(0.5)N/Al nano-particle structure,the ratio of transmittance for TE/TM polarized emission can reach~3.06,while for the Al free structure,it is only ***,the degree of polarization of SP coupled LED can be improved by the reasonable structural design.