中国物理B ›› 2018, Vol. 27 ›› Issue (8): 88106-088106.doi: 10.1088/1674-1056/27/8/088106

• INTERDISCIPLINARY PHYSICS AND RELATED AREAS OF SCIENCE AND TECHNOLOGY • 上一篇    下一篇

Influence of dopant concentration on electrical quantum transport behaviors in junctionless nanowire transistors

Liu-Hong Ma(马刘红), Wei-Hua Han(韩伟华), Xiao-Song Zhao(赵晓松), Yang-Yan Guo(郭仰岩), Ya-Mei Dou(窦亚梅), Fu-Hua Yang(杨富华)   

  1. 1 School of Physical Engineering, Zhengzhou University, Zhengzhou 450001, China;
    2 School of Electronic, Electrical and Communication Engineering, University of Chinese Academy of Sciences, Beijing 100049, China;
    3 Engineering Research Center for Semiconductor Integrated Technology, Beijing Engineering Center of Semiconductor Micro-Nano Integrated Technology, Institute of Semiconductors, Chinese Academy of Sciences, Beijing 100083, China;
    4 State Key Laboratory for Superlattices and Microstructures, Institute of Semiconductors, Chinese Academy of Sciences, Beijing 100083, China
  • 收稿日期:2018-03-15 修回日期:2018-05-02 出版日期:2018-08-05 发布日期:2018-08-05
  • 通讯作者: Wei-Hua Han, Fu-Hua Yang E-mail:weihua@semi.ac.cn;fhyang@semi.ac.cn
  • 基金资助:
    Project supported by the National Key Research and Development Program of China (Grant No. 2016YFA0200503), the Program for Innovative Research Team (in Science and Technology) in University of Henan Province, China (Grant No. 18IRTSTHN016), and the National Natural Science Foundation of China (Grant Nos. 61376096, 61327813, and 61404126).

Influence of dopant concentration on electrical quantum transport behaviors in junctionless nanowire transistors

Liu-Hong Ma(马刘红)1,3, Wei-Hua Han(韩伟华)2,3, Xiao-Song Zhao(赵晓松)2,3, Yang-Yan Guo(郭仰岩)2,3, Ya-Mei Dou(窦亚梅)2,3, Fu-Hua Yang(杨富华)3,4   

  1. 1 School of Physical Engineering, Zhengzhou University, Zhengzhou 450001, China;
    2 School of Electronic, Electrical and Communication Engineering, University of Chinese Academy of Sciences, Beijing 100049, China;
    3 Engineering Research Center for Semiconductor Integrated Technology, Beijing Engineering Center of Semiconductor Micro-Nano Integrated Technology, Institute of Semiconductors, Chinese Academy of Sciences, Beijing 100083, China;
    4 State Key Laboratory for Superlattices and Microstructures, Institute of Semiconductors, Chinese Academy of Sciences, Beijing 100083, China
  • Received:2018-03-15 Revised:2018-05-02 Online:2018-08-05 Published:2018-08-05
  • Contact: Wei-Hua Han, Fu-Hua Yang E-mail:weihua@semi.ac.cn;fhyang@semi.ac.cn
  • Supported by:
    Project supported by the National Key Research and Development Program of China (Grant No. 2016YFA0200503), the Program for Innovative Research Team (in Science and Technology) in University of Henan Province, China (Grant No. 18IRTSTHN016), and the National Natural Science Foundation of China (Grant Nos. 61376096, 61327813, and 61404126).

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摘要： We discuss the random dopant effects in long channel junctionless transistor associated with quantum confinement effects. The electrical measurement reveals the threshold voltage variability induced by the random dopant fluctuation. Quantum transport features in Hubbard systems are observed in heavily phosphorus-doped channel. We investigate the single electron transfer via donor-induced quantum dots in junctionless nanowire transistors with heavily phosphorus-doped channel, due to the formation of impurity Hubbard bands. While in the lightly doped devices, one-dimensional quantum transport is only observed at low temperature. In this sense, phonon-assisted resonant-tunneling is suppressed due to misaligned levels formed in a few isolated quantum dots at cryogenic temperature. We observe the Anderson-Mott transition from isolate electron state to impurity bands as the doping concentration is increased.

关键词: junctionless nanowire transistor, quantum transport, Hubbard band, quantum dot

Abstract: We discuss the random dopant effects in long channel junctionless transistor associated with quantum confinement effects. The electrical measurement reveals the threshold voltage variability induced by the random dopant fluctuation. Quantum transport features in Hubbard systems are observed in heavily phosphorus-doped channel. We investigate the single electron transfer via donor-induced quantum dots in junctionless nanowire transistors with heavily phosphorus-doped channel, due to the formation of impurity Hubbard bands. While in the lightly doped devices, one-dimensional quantum transport is only observed at low temperature. In this sense, phonon-assisted resonant-tunneling is suppressed due to misaligned levels formed in a few isolated quantum dots at cryogenic temperature. We observe the Anderson-Mott transition from isolate electron state to impurity bands as the doping concentration is increased.

Key words: junctionless nanowire transistor, quantum transport, Hubbard band, quantum dot

中图分类号:  (Nanowires)

  • 81.07.Gf
73.63.-b (Electronic transport in nanoscale materials and structures) 73.40.-c (Electronic transport in interface structures) 85.30.Tv (Field effect devices)