Size dependence and spatial variation of electronic structure in nonpolar ZnO nanobelts
The enhancement of performance for next-generation optoelectronic devices is determined by how much we understand the size effects on the electronic structure and their spatial variation in low-dimensional nanostructured semiconductors. In this work, the size-dependence and spatial variation of the...
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sg-ntu-dr.10356-957002020-06-01T10:21:30Z Size dependence and spatial variation of electronic structure in nonpolar ZnO nanobelts Yang, Jack Li, Sean Zhao, Yang Zhao, Xuean School of Materials Science & Engineering DRNTU::Engineering::Materials::Photonics and optoelectronics materials The enhancement of performance for next-generation optoelectronic devices is determined by how much we understand the size effects on the electronic structure and their spatial variation in low-dimensional nanostructured semiconductors. In this work, the size-dependence and spatial variation of the electronic structure of ZnO nanobelts were investigated with density functional theory and tight-binding model. The result shows that the thickness of the nanobelt exhibits stronger influence than the width on the band gap energy variation with the cross sectional area of the nanobelt larger than 0.75 nm2, which is consistent with the tight-binding modeling. Real space density-of-state mapping demonstrates alternating peaks and valleys due to the presence of 3- and 4-fold bonding sites along the nonpolar nanobelt surface. 2011-12-15T07:42:24Z 2019-12-06T19:20:06Z 2011-12-15T07:42:24Z 2019-12-06T19:20:06Z 2009 2009 Journal Article Yang, J., Li, S., Zhao, Y., & Zhao, X. (2009). Size Dependence and Spatial Variation of Electronic Structure in Nonpolar ZnO Nanobelts. Journal of Physical Chemistry C, 113(12), 4804–4808. https://hdl.handle.net/10356/95700 http://hdl.handle.net/10220/7407 10.1021/jp8105666 en Journal of physical chemistry C © 2009 American Chemical Society |
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DRNTU::Engineering::Materials::Photonics and optoelectronics materials Yang, Jack Li, Sean Zhao, Yang Zhao, Xuean Size dependence and spatial variation of electronic structure in nonpolar ZnO nanobelts |
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The enhancement of performance for next-generation optoelectronic devices is determined by how much we understand the size effects on the electronic structure and their spatial variation in low-dimensional nanostructured semiconductors. In this work, the size-dependence and spatial variation of the electronic structure of ZnO nanobelts were investigated with density functional theory and tight-binding model. The result shows that the thickness of the nanobelt exhibits stronger influence than the width on the band gap energy variation with the cross sectional area of the nanobelt larger than 0.75 nm2, which is consistent with the tight-binding modeling. Real space density-of-state mapping demonstrates alternating peaks and valleys due to the presence of 3- and 4-fold bonding sites along the nonpolar nanobelt surface. |
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School of Materials Science & Engineering |
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School of Materials Science & Engineering Yang, Jack Li, Sean Zhao, Yang Zhao, Xuean |
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Article |
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Yang, Jack Li, Sean Zhao, Yang Zhao, Xuean |
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Yang, Jack |
title |
Size dependence and spatial variation of electronic structure in nonpolar ZnO nanobelts |
title_short |
Size dependence and spatial variation of electronic structure in nonpolar ZnO nanobelts |
title_full |
Size dependence and spatial variation of electronic structure in nonpolar ZnO nanobelts |
title_fullStr |
Size dependence and spatial variation of electronic structure in nonpolar ZnO nanobelts |
title_full_unstemmed |
Size dependence and spatial variation of electronic structure in nonpolar ZnO nanobelts |
title_sort |
size dependence and spatial variation of electronic structure in nonpolar zno nanobelts |
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2011 |
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https://hdl.handle.net/10356/95700 http://hdl.handle.net/10220/7407 |
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1681056375939006464 |