Spontaneous emission rate enhancement of nano-structured silicon by surface plasmon polariton  

作　　者：Xue FENG Fang LIU Yidong HUANG 

机构地区：[1]State Key Laboratory of Integrated Optoelectronics,Department of Electronic Engineering,Tsinghua University,Beijing 100084,China

出　　处：《Frontiers of Optoelectronics》2012年第1期51-62,共12页光电子前沿（英文版）

基　　金：Acknowledgements This work was supported by the National Basic Research Program of China （No. 2011CBA00600 and 2007CB307004） and the National Natural Science Foundation of China （Grant Nos. 60877023, 61036010, 61036011, and 61107050）. The authors would like to thank Xuan Tang, Weiwei Ke, Wei Zhang and Jiangde Peng for their valuable discussions and helpful comments.

摘　　要：Surface plasmon polariton （SPP） is an attractive candidate to improve internal quantum efficiency （QE） of spontaneous emission （SE） from nano-structured silicon （Si） including nano-porous silicon （NP-Si） and silicon nanocrystal （Si-NC）. Since the SPP resonant frequency of common metals, e.g., gold （Au）, silver （Ag）, copper （Cu）, and aluminum （A1）, is too high, the SPP resonance has to be engineered to match the luminescence from nano- structured Si. For this purpose, we have proposed and demonstrated three approaches including metal-rich Au（1-a）-SiO2（a） cermet SPP waveguide （WG）, com- pound layer structure WG and metallic grating. In this paper, those approaches are reviewed and discussed. According to the calculated results, such three methods could effectively enhance SE rate from NP-Si or Si-NCs and show potential in developing high efficiency Si based light sources with electric pump.Surface plasmon polariton （SPP） is an attractive candidate to improve internal quantum efficiency （QE） of spontaneous emission （SE） from nano-structured silicon （Si） including nano-porous silicon （NP-Si） and silicon nanocrystal （Si-NC）. Since the SPP resonant frequency of common metals, e.g., gold （Au）, silver （Ag）, copper （Cu）, and aluminum （A1）, is too high, the SPP resonance has to be engineered to match the luminescence from nano- structured Si. For this purpose, we have proposed and demonstrated three approaches including metal-rich Au（1-a）-SiO2（a） cermet SPP waveguide （WG）, com- pound layer structure WG and metallic grating. In this paper, those approaches are reviewed and discussed. According to the calculated results, such three methods could effectively enhance SE rate from NP-Si or Si-NCs and show potential in developing high efficiency Si based light sources with electric pump.

关 键 词：spontaneous emission （SE） silicon nanocrys-tal （Si-NC） surface plasmon polariton （SPP） Purcell effect 

分 类 号：TP333[自动化与计算机技术—计算机系统结构] O484.41[自动化与计算机技术—计算机科学与技术]