| Electronic Structure of Semiconductor Nanocrystals |
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| 作者姓名： | Li Jingbo Wang Linwang Wei Suhuai |
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| 作者单位： | Li Jingbo 1，，Wang Linwang2，and Wei Suhuai1(1 National Renewable Energy Laboratory，Golden，CO 80401，USA)(2 Lawrence Berkeley National Laboratory，Berkeley，CA 94720，USA) |
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| 基金项目： | the U. S. DOE;DE-AC36-99GO10337 ; DE-AC03-76SF0098; |
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| 摘 要： | This paper reviews our recent development of the use of the large-scale pseudopotential method to calculate the electronic structure of semiconductor nanocrystals, such as quantum dots and wires, which often contain tens of thousands of atoms. The calculated size-dependent exciton energies and absorption spectra of quantum dots and wires are in good agreement with experiments. We show that the electronic structure of a nanocrystal can be tuned not only by its size,but also by its shape. Finally,we show that defect properties in quantum dots can be significantly different from those in bulk semiconductors.
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| 关 键 词： | 半导体 电子结构 纳米晶体 量子点 |
| 文章编号： | 0253-4177(2006)02-0191-06 |
| 修稿时间： | 2005年10月22日 |
Electronic Structure of Semiconductor Nanocrystals |
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| Li Jingbo,Wang Linwang,Wei Suhuai.Electronic Structure of Semiconductor Nanocrystals[J].Chinese Journal of Semiconductors,2006,27(2):191-196. |
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| Authors: | Li Jingbo Wang Linwang and Wei Suhuai |
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| Affiliation: | [1]National Renewable Energy Laboratory, Golden, CO 80401, USA [2]Lawrence Berkeley National Laboratory, Berkeley, CA 94720, USA |
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| Abstract: | This paper reviews our recent development of the use of the large-scale pseudopotential method to calculate the electronic structure of semiconductor nanocrystals, such as quantum dots and wires, which often contain tens of thousands of atoms. The calculated size-dependent exciton energies and absorption spectra of quantum dots and wires are in good agreement with experiments. We show that the electronic structure of a nanocrystal can be tuned not only by its size,but also by its shape. Finally,we show that defect properties in quantum dots can be significantly different from those in bulk semiconductors. |
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| Keywords: | electronic structure semiconductor nanocrystals Nanocrystals Semiconductor Structure defect properties different bulk semiconductors shape show nanocrystal tuned size exciton energies absorption spectra good experiments tens atoms quantum dots |
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