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Study of two-dimensional Si Esaki diodes at ultra-high doping with semimetal behavior

Research Project

Project/Area Number 19K04529
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Review Section Basic Section 21060:Electron device and electronic equipment-related
Research InstitutionShizuoka University

Principal Investigator

Moraru Daniel  静岡大学, 電子工学研究所, 准教授 (60549715)

Project Period (FY) 2019-04-01 – 2022-03-31
Project Status Completed (Fiscal Year 2021)
Budget Amount *help
¥4,290,000 (Direct Cost: ¥3,300,000、Indirect Cost: ¥990,000)
Fiscal Year 2021: ¥650,000 (Direct Cost: ¥500,000、Indirect Cost: ¥150,000)
Fiscal Year 2020: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
Fiscal Year 2019: ¥2,470,000 (Direct Cost: ¥1,900,000、Indirect Cost: ¥570,000)
Keywordsdopant atoms / silicon / nanodevices / tunneling / Esaki diode / semimetal / donor-acceptor pair / band-to-band tunneling / silicon-on-insulator / donor-acceptor state
Outline of Research at the Start

Silicon, key material in electronics, is known as a semiconductor. By doping with impurities, it becomes conductive. We propose that, at ultra-high doping with opposite-type impurities, silicon can behave as “semimetal” with impact on properties of tunneling devices, extending the functionalities.

Outline of Final Research Achievements

The aim of this research was to demonstrate new properties of Si nano-devices due to high doping of donor-atoms and acceptor-atoms. In particular, band-to-band tunneling was investigated to reveal the possibility of current enhancement due to energy states of dopants. Based on these results, the "semimetal" behavior can also be clarified in high-concentration co-doped Si nanodevices.
In experiments, we fabricated and characterized silicon pn/pin diodes in different concentrations. We introduced rapid thermal annealing (RTA) equipment in the fabrication process for pn diodes to obtain more controlled doping profiles.
In simulations, we reported interplay of P-donors and B-acceptors in nanowire transistors and then focused on the impact of donor-acceptor pairs in Si nanowire diodes.

Academic Significance and Societal Importance of the Research Achievements

本研究を通じて、シリコンナノデバイスのトンネル輸送制御における離散的なドーパントの役割が明らかになった。P-ドナーとB-アクセプターの相互作用は、ナノワイヤートランジスタのシミュレーションを行い、次にナノワイヤダイオードを拡張した。その結果、P-ドナーおよびB-アクセプターがトンネル輸送を媒介することが明らかになった。シリコンナノデバイスの電気伝導の実験から、ドーパント状態を介した量子トンネル伝導に関する観察結果が得られた。これらの結果は、原子スケールのエレクトロニクスを開発する上で重要である。この開発により、ナノスケールシリコンデバイスを用いた低電力エレクトロニクスが可能になると思われる。

Report

(4 results)
  • 2021 Annual Research Report   Final Research Report ( PDF )
  • 2020 Research-status Report
  • 2019 Research-status Report
  • Research Products

    (37 results)

All 2022 2021 2020 2019 Other

All Journal Article (5 results) (of which Int'l Joint Research: 5 results,  Peer Reviewed: 5 results) Presentation (30 results) (of which Int'l Joint Research: 24 results,  Invited: 7 results) Remarks (2 results)

  • [Journal Article] Probing ionization characteristics of under-water plasma arc discharge using simultaneous current and voltage versus time measurement in carbon nanoparticle synthesis2021

    • Author(s)
      M. Anwar, T. E. Saraswati, L. Anjarwati, D. Moraru, A. Udhiarto, F. Adriyanto, H. Maghfiroh, R. Nuryadi
    • Journal Title

      Micro and Nano Engineering

      Volume: 14 Pages: 100099-100099

    • DOI

      10.1016/j.mne.2021.100099

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Electron transport via a few-dopant cluster in the presence of counter-dopants in silicon nanowire transistors2021

    • Author(s)
      C. Pandy, G. Prabhudesai, K. Yamaguchi, V N Ramakrishnan, Y. Neo, H. Mimura, D. Moraru
    • Journal Title

      Applied Physics Express

      Volume: 14 Issue: 5 Pages: 055002-055002

    • DOI

      10.35848/1882-0786/abf404

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Band-to-band tunneling mechanism observed at room temperature in lateral non-degenerately doped nanoscale p-n and p-i-n silicon devices2021

    • Author(s)
      Udhiarto Arief、Nuryadi Ratno、Anwar Miftahul、Prabhudesai Gaurang、Moraru Daniel
    • Journal Title

      Japanese Journal of Applied Physics

      Volume: 60 Issue: 2 Pages: 024001-024001

    • DOI

      10.35848/1347-4065/abd69d

    • Related Report
      2020 Research-status Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Coulomb-blockade transport in selectively-doped Si nano-transistors2019

    • Author(s)
      A. Afiff, A. Samanta, A. Udhiarto, H. Sudibyo, M. Hori, Y. Ono, M. Tabe, D. Moraru
    • Journal Title

      Appl. Phys. Express

      Volume: 12 Issue: 8 Pages: 085004-085004

    • DOI

      10.7567/1882-0786/ab2cd7

    • NAID

      210000156539

    • Related Report
      2019 Research-status Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Single-charge band-to-band tunneling via multiple-dopant clusters in nanoscale Si Esaki diodes2019

    • Author(s)
      G. Prabhudesai, M. Muruganathan, L. T. Anh, H. Mizuta, M. Hori, Y. Ono, M. Tabe, D. Moraru
    • Journal Title

      Appl. Phys. Lett.

      Volume: 114 Issue: 24

    • DOI

      10.1063/1.5100342

    • Related Report
      2019 Research-status Report
    • Peer Reviewed / Int'l Joint Research
  • [Presentation] 高濃度共ドープしたSiナノトランジスタの単一電子トンネリング評価2022

    • Author(s)
      金子 義,タルナ・テジャ・ジュパリ, 三浦 舜平, 山口 謙祐, モラル・ダニエル
    • Organizer
      The 69th JSAP Spring Meeting 2022
    • Related Report
      2021 Annual Research Report
  • [Presentation] Study of single-electron tunneling in Si nano-transistors in different doping concentration regimes for room-temperature operation2022

    • Author(s)
      T. T. Jupalli, A. Debnath, Y. Ono, and D. Moraru
    • Organizer
      The 69th JSAP Spring Meeting 2022
    • Related Report
      2021 Annual Research Report
  • [Presentation] Theoretical analysis on the effect of coupling between dopants and leads in Si nanodiodes for band-to-band tunneling enhancement2022

    • Author(s)
      C. Pandy, K. Yamaguchi, Y. Neo, H. Mimura, and D. Moraru
    • Organizer
      The 69th JSAP Spring Meeting 2022
    • Related Report
      2021 Annual Research Report
  • [Presentation] Inkjet printing of carbon nanotube array at low density for CMOS-compatible fabrication of nanoscale transistors2022

    • Author(s)
      R. S. Singh, K. Takagi, T. Aoki, J. Moon, Y. Neo, D. Moraru, and H. Mimura
    • Organizer
      The 69th JSAP Spring Meeting 2022
    • Related Report
      2021 Annual Research Report
  • [Presentation] Study of single-electron tunneling transport in high-concentration co-doped SOI-FETs2022

    • Author(s)
      T. T. Jupalli, T. Kaneko, S. Miura, C. Pandy, and D. Moraru
    • Organizer
      The 8th International Symposium toward the Future of Advanced Researches in Shizuoka University (ISFAR-SU 2022 )
    • Related Report
      2021 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Study of deposition and manipulation of carbon-nanotube arrays at low density2022

    • Author(s)
      R. S. Singh, K. Takahashi, K. Takagi, T. Aoki, J. H. Moon, Y. Neo, F. Iwata, D. Moraru, and H. Mimura
    • Organizer
      The 8th International Symposium toward the Future of Advanced Researches in Shizuoka University (ISFAR-SU 2022 )
    • Related Report
      2021 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Theoretical study of the impact of a front-end dopant pair on tunneling current in Si nanodiodes2022

    • Author(s)
      C. Pandy, K. Yamaguchi, Y. Neo, H. Mimura, and D. Moraru
    • Organizer
      The 8th International Symposium toward the Future of Advanced Researches in Shizuoka University (ISFAR-SU 2022 )
    • Related Report
      2021 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Probing of deep states by band-to-band tunneling in nanoscale silicon-on-insulator Esaki diodes2021

    • Author(s)
      D. Moraru, Y. Tamura, Y. Iwatsuki, and K. Yamaguchi
    • Organizer
      The 19th International Conference on Global Research and Education in Engineering for Sustainable Future (Inter-Academia 2021)
    • Related Report
      2021 Annual Research Report
    • Int'l Joint Research
  • [Presentation] First-principles study of bandgap electronic states under electric field in silicon nanowires with discrete dopants2021

    • Author(s)
      K. Yamaguchi, M. Tabe, and D. Moraru
    • Organizer
      The 19th International Conference on Global Research and Education in Engineering for Sustainable Future (Inter-Academia 2021)
    • Related Report
      2021 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Theoretical study of the impact of a donor-acceptor pair on tunneling current in Si nanodiodes2021

    • Author(s)
      C. Pandy, K. Yamaguchi, Y. Neo, H. Mimura, M. Tabe, and D. Moraru
    • Organizer
      The 19th International Conference on Global Research and Education in Engineering for Sustainable Future (Inter-Academia 2021)
    • Related Report
      2021 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Silicon electronics at atomic and molecular scales2021

    • Author(s)
      D. Moraru
    • Organizer
      13th International Conference on Physics of Advanced Materials (ICPAM-13)
    • Related Report
      2021 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] Statistical analysis of likelihood of donor-induced quantum dots in Si nano-transistors at different concentrations2021

    • Author(s)
      T. T. Jupalli, A. Debnath, G. Prabhudesai, and D. Moraru
    • Organizer
      13th International Conference on Physics of Advanced Materials (ICPAM-13)
    • Related Report
      2021 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Measurements of single-electron tunneling through atoms in nanoscale devices2021

    • Author(s)
      D. Moraru
    • Organizer
      Physics of Advanced Materials School (PAMS-4)
    • Related Report
      2021 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] Study of single-electron tunneling transport through coupled-donor molecule in low-doped SOI-FETs towards elevated temperature2021

    • Author(s)
      A. Debnath, T. Teja Jupalli, C. Pandy, D. Moraru
    • Organizer
      7th International Symposium toward the Future of Advanced Researches in Shizuoka University(ISFAR-SU 2021)
    • Related Report
      2020 Research-status Report
    • Int'l Joint Research
  • [Presentation] Electron transport in silicon nano-devices at atomic and molecular-level scales2021

    • Author(s)
      D. Moraru
    • Organizer
      2nd International Conference on Microelectronic Devices, Circuits and Systems (ICMDCS2021)
    • Related Report
      2020 Research-status Report
    • Int'l Joint Research / Invited
  • [Presentation] Study of Electrical Characteristics of Codoped Si-Nanoscale Transistors2021

    • Author(s)
      C. Pandy, G. Prabhudesai, K. Yamaguchi, V. N. Ramakrishnan, Y. Neo, H. Mimura, D. Moraru
    • Organizer
      6th International Conference on Nanoscience and Nanotechnology (ICONN2021)
    • Related Report
      2020 Research-status Report
    • Int'l Joint Research
  • [Presentation] Band-to-Band Tunneling in Highly-Doped Silicon-on-Insulator Nanoscale Esaki Diodes2021

    • Author(s)
      D. Moraru, G. Prabhudesai
    • Organizer
      6th International Conference on Nanoscience and Nanotechnology (ICONN2021)
    • Related Report
      2020 Research-status Report
    • Int'l Joint Research / Invited
  • [Presentation] Study of Randomly-Formed Interacting Quantum Dots in Highly-Doped Si Junctionless Transistors2021

    • Author(s)
      T. Teja. Jupalli, G. Prabhudesai, A. Debnath, P. Jeevan Kumar, D. Moraru
    • Organizer
      6th International Conference on Nanoscience and Nanotechnology (ICONN2021)
    • Related Report
      2020 Research-status Report
    • Int'l Joint Research
  • [Presentation] Coulomb-Blockade Charge-Transport Mechanism in Band-to Band Tunneling in Heavily-Doped Low-Dimensional Silicon Esaki Diodes2020

    • Author(s)
      G. Prabhudesai, K. Yamaguchi, M. Tabe, D. Moraru
    • Organizer
      IEEE Silicon Nanoelectronics Workshop 2020 (SNW 2020)
    • Related Report
      2020 Research-status Report
    • Int'l Joint Research
  • [Presentation] A Study of Single-Electron Tunneling Functionalities in Highly-Doped Silicon-on-Insulator Junctionless Transistors2020

    • Author(s)
      T. Teja Jupalli, G. Prabhudesai, M. Hasan, A. Debnath, P. Jeevan Kumar, M. Tabe, D. Moraru
    • Organizer
      IEEE Silicon Nanoelectronics Workshop 2020 (SNW2020)
    • Related Report
      2020 Research-status Report
    • Int'l Joint Research
  • [Presentation] Effects of Co-doping on the Transport Characteristics of Nanoscale n-type Silicon-on-Insulator Transistors2020

    • Author(s)
      C. Pandy, A. Debnath, K. Yamaguchi, T. Teja Jupalli, G. Prabhudesai, Ramakrishnan V N, Y. Neo, H. Mimura, D. Moraru
    • Organizer
      IEEE Silicon Nanoelectronics Workshop 2020 (SNW2020)
    • Related Report
      2020 Research-status Report
    • Int'l Joint Research
  • [Presentation] ナノスケール・シリコンにおける電子・電子散乱を利用したエレクトロン・アスピレーター2020

    • Author(s)
      小野 行徳, ヒンマ フィルダス, 渡邉 時暢, 堀 匡寛, ダニエル モラル, 高橋 庸夫, 藤原 聡
    • Organizer
      第67回応用物理学会春季学術講演会
    • Related Report
      2019 Research-status Report
    • Invited
  • [Presentation] Novel dopant-mediated charge transport mecanisms in nanoscale Si Esaki diodes2020

    • Author(s)
      G. Prabhudesai, K. Yamaguchi, M. Tabe, D. Moraru
    • Organizer
      The 6th International Symposium toward the Future of Advanced Researches in Shizuoka University (ISFAR-SU2020)
    • Related Report
      2019 Research-status Report
    • Int'l Joint Research
  • [Presentation] Electrical characteristics of heavily-doped junctionless nanoscale silicon-on-insulator transistors with single-electron tunneling functionalities2020

    • Author(s)
      T. T. Jupalli, G. Prabhudesai, A. Debnath, D. Moraru
    • Organizer
      The 6th International Symposium toward the Future of Advanced Researches in Shizuoka University (ISFAR-SU2020)
    • Related Report
      2019 Research-status Report
    • Int'l Joint Research
  • [Presentation] Study of single-electron tunneling through competitive parallel paths via donor-atoms in Si nano-transistors2020

    • Author(s)
      A. Debnath, M. Hasan, T. T. Jupalli, G. Prabhudesai, D. Moraru
    • Organizer
      The 6th International Symposium toward the Future of Advanced Researches in Shizuoka University (ISFAR-SU2020)
    • Related Report
      2019 Research-status Report
    • Int'l Joint Research
  • [Presentation] Electron aspirator using electron-electron scattering in nanoscale silicon2019

    • Author(s)
      H. Firdaus, T. Watanabe, M. Hori, D. Moraru, Y. Takahashi, A. Fujiwara, Y. Ono
    • Organizer
      The 21st Takayanagi Kenjiro Memorial Symposium
    • Related Report
      2019 Research-status Report
    • Int'l Joint Research / Invited
  • [Presentation] Control and observation of single-electron tunneling via dopants in Si nanoscale devices2019

    • Author(s)
      D. Moraru
    • Organizer
      The 1st International Symposium on Single Atom Electronics
    • Related Report
      2019 Research-status Report
    • Int'l Joint Research / Invited
  • [Presentation] Single-electron tunneling percolation in dopant-atom networks formed in sillicon nanoscale transistors2019

    • Author(s)
      D. Moraru, M. Hasan, A. Debnath, A. Afiff, G. Prabhudesai
    • Organizer
      Inter-Academia2019
    • Related Report
      2019 Research-status Report
    • Int'l Joint Research
  • [Presentation] Ab initio study of the effect ofelectric field on a donor-acceptor pair in Si nanostructures2019

    • Author(s)
      K. Yamaguchi, G. Prabhudesai, M. Muruganathan, H. Mizuta, M. Tabe, D. Moraru
    • Organizer
      Inter-Academia2019
    • Related Report
      2019 Research-status Report
    • Int'l Joint Research
  • [Presentation] Research on single-charge tunneling via multiple-dopant quantum dots in Si nanodevices2019

    • Author(s)
      D. Moraru
    • Organizer
      広島大学ワークショップ
    • Related Report
      2019 Research-status Report
  • [Remarks] Shizuoka University, Moraru Lab website

    • URL

      https://wwp.shizuoka.ac.jp/morarulab/

    • Related Report
      2021 Annual Research Report 2020 Research-status Report
  • [Remarks] Moraru Lab web site

    • URL

      https://wwp.shizuoka.ac.jp/morarulab/

    • Related Report
      2019 Research-status Report

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Published: 2019-04-18   Modified: 2023-01-30  

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