Light Emission Characteristics of Metal/Insulator/Metal and Metal/Insulator/Si Tunnel Junctions Mediated by Surface Plasmon-polaritons  

作　　者：WANG Mao-xiang YU Jian-hua ZHANG You-wen SUN Cheng-xiu ZHANG Xu-ping 

机构地区：[1]School of Management and Engineering, Nanjing University, Nanjing 210093, CHN [2]School of Electronic Science and Engineering, Southeast University, Nanjing 210096, CHN

出　　处：《Semiconductor Photonics and Technology》2007年第3期169-173,共5页半导体光子学与技术（英文版）

基　　金：National Natural Science Foundation of China(69576006)

摘　　要：The Au/Al2O3/Al metal/insulator/metal junction(MIMJ) and Au/SiO2/Si metal/insulator/Si junction(MISJ) have been constructed successfully. The light emission of these junctions was mediated by surface plasmon-polaritons(SPPs) under surface roughness. The light emission from MISJ was more uniform and stable than that from MIMJ. The light power of MISJ was about 2~3 orders higher than that of MIMJ. The light emission spectrum of MISJ was analyzed especially. In the spectrum, there was one main peak located at the wavelength of 610 nm^640 nm, which was mainly due to the couple of SPP with the surface roughness at the Au/air and Au/SiO2 interfaces. A weak peak located at the shorter wavelength region in the spectrum was also found, which was caused by the direct radiation of doped-Si plasma oscillation.The Au/Al2O3/Al metal/insulator/metal junction（MIMJ） and Au/SiO2/Si metal/insulator/Si junction（MISJ） have been constructed successfully. The light emission of these junctions was mediated by surface plasmon-polaritons（SPPs） under surface roughness. The light emission from MISJ was more uniform and stable than that from MIMJ. The light power of MISJ was about 2-3 orders higher than that of MIMJ. The light emission spectrum of MISJ was analyzed especially. In the spectrum, there was one main peak located at the wavelength of 610 nm-640 nm, which was mainly due to the couple of SPP with the surface roughness at the Au/air and Au/SiO2 interfaces. A weak peak located at the shorter wavelength region in the spectrum was also found, which was caused by the direct radiation of doped-Si plasma oscillation.

关 键 词：MIMJ and MISJ surface plasmon-polariton light emission characteristics light emission spectrum 

分 类 号：O484[理学—固体物理]