| 三量子阱超晶格单元结构电流特性的数值研究 |
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| 引用本文： | 张倬,孙金祚.三量子阱超晶格单元结构电流特性的数值研究[J].烟台大学学报(自然科学与工程版),2007,20(1):13-17. |
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| 作者姓名： | 张倬 孙金祚 |
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| 作者单位： | 1. 中国科学院固体物理研究所,安徽,合肥,230031
2. 烟台大学,光电信息科学技术学院,山东,烟台,264005 |
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| 摘 要： | 通过数值求解非平衡态维格纳函数,研究了三量子阱(three-quantum-well)超晶格单元结构共振隧穿电压-电流特性.计算结果表明:增大阱宽,减小垒宽或势垒高度可使峰值电流对应电压逐渐增加,电流峰值逐渐增大;增加掺杂浓度或降低温度可使电流峰值增大,而对应电压值保持不变.
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| 关 键 词： | 量子阱 共振隧穿 维格纳函数 负微分电阻 |
| 文章编号： | 1004-8820（2007）01-0013-05 |
| 收稿时间： | 2006-01-21 |
| 修稿时间： | 2006-01-21 |
Numerical Study of Voltage-Current Characteristics in a Three-Quantum-Well Superlattice Unit |
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| ZHANG Zhuo,SUN Jin-zuo.Numerical Study of Voltage-Current Characteristics in a Three-Quantum-Well Superlattice Unit[J].Journal of Yantai University(Natural Science and Engineering edirion),2007,20(1):13-17. |
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| Authors: | ZHANG Zhuo SUN Jin-zuo |
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| Institution: | 1. Institute of Solid State Physics , Chinese Academy of Science , Hefei 230031, China;2. Institute of Science and Technology for Opto-Electronic Information, Yantai University , Yantai 264005, China |
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| Abstract: | Voltage-current characteristics in a three-quantum-well superlattice unit are studied by numerically solving the nonequilibrium Wigner function equation.The calculation results show that the peak value of current and it's corresponding voltage will increase with increasing well-width,decreasing barrier-width or barrier-height;the peak value of current will increase with increasing doping concentration or decreasing temperature while it's corresponding voltage hold the line. |
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| Keywords: | quantum-well resonant tunneling Wigner function negative difference resistance |
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