| 硼氮共掺杂碳管门压输运特性第一性原理研究 |
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| 引用本文： | 韦建卫,曾晖,蒲利春,刘群英.硼氮共掺杂碳管门压输运特性第一性原理研究[J].重庆工学院学报,2011(1). |
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| 作者姓名： | 韦建卫 曾晖 蒲利春 刘群英 |
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| 作者单位： | 重庆理工大学光电信息学院;长江大学物理科学与技术学院; |
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| 基金项目： | 国家自然科学基金资助项目(10947161); 重庆理工大学科研启动基金资助项目(2008ZD16) |
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| 摘 要： | 利用结合第一性原理的密度泛函理论的非平衡格林函数数值方法,计算了硼氮共掺杂(5,5)单壁碳纳米管的电子透射特征和电流电压曲线。结果表明,硼氮共掺杂使得金属型(5,5)单壁碳管转变为半导体性,硼氮共掺杂使得体系透射峰值随偏压发生非线性变换。门电压较小时对体系的输运特性的调制才属于线性关系。
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| 关 键 词： | 硼氮共掺杂 输运特性 调制 |
First Principle Study of Gate Voltage Transport Properties for Boron/Nitrogen Co-doping Nanotube |
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| WEI Jian-wei,ZENG Hui,PU Li-chun,LIU Qun-ying.First Principle Study of Gate Voltage Transport Properties for Boron/Nitrogen Co-doping Nanotube[J].Journal of Chongqing Institute of Technology,2011(1). |
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| Authors: | WEI Jian-wei ZENG Hui PU Li-chun LIU Qun-ying |
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| Affiliation: | WEI Jian-wei1,ZENG Hui2,PU Li-chun1,LIU Qun-ying1(1.College of Optoelectronic Information,Chongqing University of Technology,Chongqing 400054,China,2.College of Physical Science and Technology,Yangtze University,Jingzhou 434023,China) |
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| Abstract: | Using the non-equilibrium Green's functions combined with first-principle density functional theory,the transport properties of the boron/nitrogen co-doped single-walled nanotube of(5,5) are studied in this paper.The results show that the co-doping converts the metallic nanotube into semiconducting one,and nonlinearly changes the nanotube's transmission peak with bias voltage.Furthermore,the system's transport property modulation is linear only when the gate voltage is small. |
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| Keywords: | boron/nitrogen co-doping transport properties modulation |
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