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Electronic states and curved surface effect of silicon quantum dots
Wei-Qi Huang;  Zhong-Mei Huang;  Han-Qiong Cheng;  Xin-Jian Miao;  Qin Shu;  Shi-Rong Liu;  Chao-Jian Qin
2012
Source PublicationApplied Physics Letters
Volume101Issue:17Pages:1-5
Abstract

The calculation results show that the bonding energy and electronic states of silicon quantum dots (Si QDs) are different on various curved surfaces (CS), for example, a Si-O-Si bridge bond on curved surface provides the localized levels in band gap and its bonding energy is shallower than that on facet. Curved surface breaks symmetrical shape of silicon quantum dots on which some bonds can produce localized electronic states in band gap. The red-shifting of photoluminescence spectra on smaller silicon quantum dots can be explained by CS effect. In CS effect, surface curvature is determined by the shape of Si QDs or silicon nanostructures, which is independent of their sizes. The CS effect has the interesting fundamental physical properties in nanophysics as that of quantum confinement effect. VC 2012 American Institute of Physics.

Indexed BySCI
Language英语
Document Type期刊论文
Identifierhttp://ir.gyig.ac.cn/handle/42920512-1/10958
Collection矿床地球化学国家重点实验室
Affiliation1.Institute of Nanophotonic Physics, Key Laboratory of Photoelectron Technology and Application, Guizhou University, Guiyang 550025, China
2.State Key Laboratory of Ore Deposit Geochemistry, Institute of Geochemistry, Chinese Academy of Sciences, Guiyang 550003, China
Recommended Citation
GB/T 7714
Wei-Qi Huang;Zhong-Mei Huang;Han-Qiong Cheng;Xin-Jian Miao;Qin Shu;Shi-Rong Liu;Chao-Jian Qin. Electronic states and curved surface effect of silicon quantum dots[J]. Applied Physics Letters,2012,101(17):1-5.
APA Wei-Qi Huang;Zhong-Mei Huang;Han-Qiong Cheng;Xin-Jian Miao;Qin Shu;Shi-Rong Liu;Chao-Jian Qin.(2012).Electronic states and curved surface effect of silicon quantum dots.Applied Physics Letters,101(17),1-5.
MLA Wei-Qi Huang;Zhong-Mei Huang;Han-Qiong Cheng;Xin-Jian Miao;Qin Shu;Shi-Rong Liu;Chao-Jian Qin."Electronic states and curved surface effect of silicon quantum dots".Applied Physics Letters 101.17(2012):1-5.
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