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...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.展开更多
系统研究两种不同形态的硅氧合金薄膜,用甚高频PECVD系统制备的非晶硅氧和纳米硅氧薄膜的特性,以及其在纳米硅薄膜叠层薄膜太阳电池中的应用。实验中主要通过对不同的气体流量比的优化、沉积功率和沉积压力的优化,分别制备出光学带隙约...系统研究两种不同形态的硅氧合金薄膜,用甚高频PECVD系统制备的非晶硅氧和纳米硅氧薄膜的特性,以及其在纳米硅薄膜叠层薄膜太阳电池中的应用。实验中主要通过对不同的气体流量比的优化、沉积功率和沉积压力的优化,分别制备出光学带隙约为2.1 e V,折射率约为3的a-SiO_x∶B∶H薄膜,作为非晶硅顶电池的p1层,以及带隙为2.2~2.5 e V,折射率为2.0~2.5,晶化率为20%~50%的nc-SiO_x∶P∶H薄膜,作为非晶硅/纳米硅叠层电池的中间反射层和纳米硅的底电池n2层。最后将优化后的a-SiO_x∶B∶H和nc-SiO_x∶P∶H薄膜应用到非晶硅/纳米硅薄膜叠层电池中,在0.79 m^2的玻璃基板上制备出初始峰值功率为101.1 W、全面积初始转换效率为12.8%、稳定峰值功率为87.3 W、全面积稳定转换效率为11.1%的非晶硅/纳米硅叠层电池。展开更多
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.
文摘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.
文摘系统研究两种不同形态的硅氧合金薄膜,用甚高频PECVD系统制备的非晶硅氧和纳米硅氧薄膜的特性,以及其在纳米硅薄膜叠层薄膜太阳电池中的应用。实验中主要通过对不同的气体流量比的优化、沉积功率和沉积压力的优化,分别制备出光学带隙约为2.1 e V,折射率约为3的a-SiO_x∶B∶H薄膜,作为非晶硅顶电池的p1层,以及带隙为2.2~2.5 e V,折射率为2.0~2.5,晶化率为20%~50%的nc-SiO_x∶P∶H薄膜,作为非晶硅/纳米硅叠层电池的中间反射层和纳米硅的底电池n2层。最后将优化后的a-SiO_x∶B∶H和nc-SiO_x∶P∶H薄膜应用到非晶硅/纳米硅薄膜叠层电池中,在0.79 m^2的玻璃基板上制备出初始峰值功率为101.1 W、全面积初始转换效率为12.8%、稳定峰值功率为87.3 W、全面积稳定转换效率为11.1%的非晶硅/纳米硅叠层电池。
