The optical properties of F- and H-terminated silicon nanoribbons with armchair edges(F- and H- terminated ASi NRs)are compared by using the first-principles within the density function theory(DFT) framework. The results show that compared with for H-terminated 7-ASi NR, the dielectric function for the F-terminated 7-ASi NR has a red shift, which is mainly attributed to the narrower band gap because of the σ–π mixing effect of F–Si bonds in F-terminated 7-ASi NR.The peaks in the energy loss spectra for both...
【英文摘要】
The optical properties of F- and H-terminated silicon nanoribbons with armchair edges(F- and H- terminated ASi NRs)are compared by using the first-principles within the density function theory(DFT) framework. The results show that compared with for H-terminated 7-ASi NR, the dielectric function for the F-terminated 7-ASi NR has a red shift, which is mainly attributed to the narrower band gap because of the σ –π mixing effect of F–Si bonds in F-terminated 7-ASi NR.The peaks in the energy loss spectra for bot...
【基金】
Project supported by the Henan Provincial Joint Funds of the National Natural Science Foundation of China(Grant Nos.U1404608 and U1304612);
the Science and Technology Key Projects of Henan Province;China(Grant No.1502102210124);
the Special Fund for Theoretical Science Foundation of Nanyang Normal University;China(Grant No.ZX2013018)
【更新日期】
2015-12-16
【分类号】
TB383.1
【正文快照】
Lu Dao-Bang(鲁道邦),Pu Chun-Ying(濮春英),Song Yu-Ling(宋玉玲),Pan Qun-Na(潘群娜),Zhou Da-Wei(周大伟),and Xu Hai-Ru(徐海如)The optical properties of F-and H-terminated silicon nanoribbons with armchair edges(F-and H-terminated ASi NRs)are compared by using
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