| ZnO材料的电子输运特性 |
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| 引用本文： | 郭宝增,王永青,宗晓萍,孙荣霞,宋登元,Umberto Ravaioli,Maritin Staedele.ZnO材料的电子输运特性[J].半导体学报,2003,24(7):723-728. |
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| 作者姓名： | 郭宝增 王永青 宗晓萍 孙荣霞 宋登元 Umberto Ravaioli Maritin Staedele |
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| 作者单位： | [1]河北大学电子信息工程学院，保定071002 [2]BeckmanInstitute,UniversityofIllinoisatUrbana-Champaign,405NorthMathewsUrbana,IL61801,USA |
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| 基金项目： | 国家留学基金委留学基金;98813054; |
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| 摘 要： | 用全带Monte Carlo方法模拟了纤锌矿Zn O材料电子的稳态和瞬态输运特性.稳态输运特性包括稳态平均漂移速度-电场特性、电子平均能量-电场特性和在不同电场下电子按能量的分布.在平均漂移速度-电场特性中发现了微分负阻效应.Zn O的瞬态输运特性包括平均漂移速度-位移关系曲线、渡越时间-位移关系曲线等.在平均漂移速度-位移关系曲线中发现了过冲现象,这种现象是电子从低能谷到高能谷跃迁过程中的弛豫时间产生的.
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| 关 键 词： | MonteCarlo ZnO 输运特性 微分负阻效应 |
| 文章编号： | 0253-4177(2003)07-0723-06 |
| 修稿时间： | 2002年8月28日 |
Theoretical Study of Electron Transport in ZnO |
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| Guo Baozeng ,Wang Yongqing ,Zong Xiaoping ,Sun Rongxia ,Song Dengyuan ,Umberto Ravaioli and Maritin Staedele.Theoretical Study of Electron Transport in ZnO[J].Chinese Journal of Semiconductors,2003,24(7):723-728. |
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| Authors: | Guo Baozeng Wang Yongqing Zong Xiaoping Sun Rongxia Song Dengyuan Umberto Ravaioli and Maritin Staedele |
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| Affiliation: | Guo Baozeng 1,Wang Yongqing 1,Zong Xiaoping 1,Sun Rongxia 1,Song Dengyuan 1,Umberto Ravaioli 2 and Maritin Staedele 2 |
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| Abstract: | The full band Monte Carlo method is used to explore steady-state electron transport and transient electron transport in ZnO.For the steady-state electron transport,the velocity-field characteristics,average energy-field characteristics and electron distributions in energy are presented.An important feature of the velocity-field characteristics is a differential negative resistance effect in steady state electron drift velocity.For the transient electron transport,velocity-distance characteristics and transit time-distance characteristics are reported.In velocity-distance characteristics,the effect of velocity overshoot is found.Relaxation time of electron transfer from lower valleys to higher valleys causes the overshoot effect. |
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| Keywords: | Monte Carlo ZnO transport properties differential negative resistance effect |
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