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Growth of 2D semiconductors-based lateral homojunctions

Research Project

Project/Area Number 19K15403
Research Category

Grant-in-Aid for Early-Career Scientists

Allocation TypeMulti-year Fund
Review Section Basic Section 28030:Nanomaterials-related
Research InstitutionNational Institute of Advanced Industrial Science and Technology

Principal Investigator

Okada Mitsuhiro  国立研究開発法人産業技術総合研究所, 材料・化学領域, 研究員 (10824302)

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: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
Fiscal Year 2020: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Fiscal Year 2019: ¥1,690,000 (Direct Cost: ¥1,300,000、Indirect Cost: ¥390,000)
Keywords遷移金属ダイカルコゲナイド / 化学気相成長 / ドーピング / ガスソースCVD / ラテラルホモ接合
Outline of Research at the Start

本研究では、原子層遷移金属ダイカルコゲナイドに対する、金属元素置換による単一結晶内での局所的なキャリア濃度制御技術=ラテラルホモ接合の実現を目的とする。
制御性に優れる気体原料での遷移金属ダイカルコゲナイド合成を行い、そこに微量の異種金属元素を添加することにより異種元素置換によるキャリアドープを実現する。この異種元素の添加のある・なし、あるいは絶対量を切り替えることにより単一結晶でのpn接合や縮退-非縮退接合といった基礎的な半導体ラテラルホモ接合を実現し、その評価と有用性を確認することを最終目標とする。

Outline of Final Research Achievements

In this work, we have developed several chemical vapor deposition (CVD) growth methods of transition metal dichalcogenides (molybdenum disulfide and tungsten disulfide) monolayer. In particular, we have demonstrated a growth of monolayer molybdenum disulfide p-n diode by substitutional doping. By adding a niobium source, which acts as an acceptor for molybdenum disulfide (in general, molybdenum disulfide is an n-type semiconductor due to its surface sulfur vacancies), in the CVD growth, we have succeeded to synthesis partially-Nb-doped monolayer molybdenum disulfide crystals. Local niobium doping was confirmed by X-ray photoelectron spectroscopy. The crystal showed position-dependent p- and n-type semiconductor behavior and a clear diode operation at the p-n junction region: showing the successful formation of monolayer molybdenum disulfide p-n diode by local substitutional doping.

Academic Significance and Societal Importance of the Research Achievements

遷移金属ダイカルコゲナイドは近年ポストSi材料としてその地位を確立しつつある。それにも関わらず、半導体材料機能化のため基礎的かつ重要な、元素置換ドープによるp型n型制御が未熟であるなど、半導体デバイス応用にはまだ課題が山積している状況である。本研究はこの問題点を解決する技術の原理実証に成功しており、その応用を後押しする成果である。また、同時に1次元p-n接合界面物性の更なる探求や遷移金属ダイカルコゲナイドにおける結晶成長の更なる理解など、基礎物性探索においても重要な成果を上げていると考えている。

Report

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

    (18 results)

All 2021 2020 2019 Other

All Int'l Joint Research (1 results) Journal Article (6 results) (of which Int'l Joint Research: 1 results,  Peer Reviewed: 6 results,  Open Access: 4 results) Presentation (10 results) (of which Int'l Joint Research: 5 results) Patent(Industrial Property Rights) (1 results)

  • [Int'l Joint Research] University of Texas at Austin(米国)

    • Related Report
      2020 Research-status Report
  • [Journal Article] One-step chemical vapor deposition of 3D-NbS2/2D-MoS2 metal/semiconductor junctions2021

    • Author(s)
      Mitsuhiro Okada, Naoya Okada, Wen-Hsin Chang, Toshitaka Kubo, Tetsuo Shimizu, Toshifumi Irisawa, Masatou Ishihara
    • Journal Title

      2021 Silicon Nanoelectronics Workshop (SNW)

      Volume: 1 Pages: 1-2

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Growth of MoS2-Nb-doped MoS2 lateral homojunctions: A monolayer p-n diode by substitutional doping2021

    • Author(s)
      Mitsuhiro Okada, Naoka Nagamura, Tarojiro Matsumura, Yasunobu Ando, Anh Khoa Augustin Lu, Naoya Okada, Wen-Hsin Chang, Takeshi Nakanishi, Tetsuo Shimizu, Toshitaka Kubo, Toshifumi Irisawa, Takatoshi Yamada
    • Journal Title

      APL Materials

      Volume: 9 Issue: 12

    • DOI

      10.1063/5.0070333

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Micrometer-scale WS2 atomic layers grown by alkali metal free gas-source chemical vapor deposition with H2S and WF6 precursors2021

    • Author(s)
      Okada Mitsuhiro、Okada Naoya、Chang Wen-Hsin、Shimizu Tetsuo、Kubo Toshitaka、Ishihara Masatou、Irisawa Toshifumi
    • Journal Title

      Japanese Journal of Applied Physics

      Volume: 60 Issue: SB Pages: SBBH09-SBBH09

    • DOI

      10.35848/1347-4065/abd6d6

    • Related Report
      2020 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Microscopic Mechanism of Van der Waals Heteroepitaxy in the Formation of MoS2/hBN Vertical Heterostructures2020

    • Author(s)
      Okada Mitsuhiro、Maruyama Mina、Okada Susumu、Warner Jamie H.、Kureishi Yusuke、Uchiyama Yosuke、Taniguchi Takashi、Watanabe Kenji、Shimizu Tetsuo、Kubo Toshitaka、Ishihara Masatou、Shinohara Hisanori、Kitaura Ryo
    • Journal Title

      ACS Omega

      Volume: 5 Issue: 49 Pages: 31692-31699

    • DOI

      10.1021/acsomega.0c04168

    • Related Report
      2020 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Enhanced Exciton?Exciton Collisions in an Ultraflat Monolayer MoSe2 Prepared through Deterministic Flattening2020

    • Author(s)
      Hotta Takato、Ueda Akihiko、Higuchi Shohei、Okada Mitsuhiro、Shimizu Tetsuo、Kubo Toshitaka、Ueno Keiji、Taniguchi Takashi、Watanabe Kenji、Kitaura Ryo
    • Journal Title

      ACS Nano

      Volume: 15 Issue: 1 Pages: 1370-1377

    • DOI

      10.1021/acsnano.0c08642

    • NAID

      120007170455

    • Related Report
      2020 Research-status Report
    • Peer Reviewed
  • [Journal Article] Gas-Source CVD Growth of Atomic Layered WS2 from WF6 and H2S Precursors with High Grain Size Uniformity2019

    • Author(s)
      Mitsuhiro Okada, Naoya Okada, Wen-Hsin Chang, Takahiko Endo, Atsushi Ando, Tetsuo Shimizu, Toshitaka Kubo, Yasumitsu Miyata, Toshifumi Irisawa
    • Journal Title

      Scientific Reports

      Volume: 9 Issue: 1 Pages: 17678-17678

    • DOI

      10.1038/s41598-019-54049-6

    • Related Report
      2019 Research-status Report
    • Peer Reviewed / Open Access
  • [Presentation] One-step chemical vapor deposition of 3D-NbS2/2D-MoS2 metal/semiconductor junctions2021

    • Author(s)
      Mitsuhiro Okada, Naoya Okada, Wen-Hsin Chang, Toshitaka Kubo, Tetsuo Shimizu, Toshifumi Irisawa, Masatou Ishihara
    • Organizer
      2021 Silicon Nanoelectronics Workshop
    • Related Report
      2021 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Formation of monolayer MoS2 p-n junctions by spatially selective Nb doping during chemical vapor deposition2021

    • Author(s)
      Mitsuhiro Okada, Toshifumi Irisawa, Naoka Nagamura, Naoya Okada, Wen-Hsin Chang, Tetsuo Shimizu, Toshitaka Kubo, Masatou Ishihara
    • Organizer
      2021 International Conference on Solid State Devices and Materials
    • Related Report
      2021 Annual Research Report
    • Int'l Joint Research
  • [Presentation] 気体原料を用いた1T′相WS2の化学気相成長2021

    • Author(s)
      岡田 光博、林 永昌、菊地 伊織、岡田 直也、張 文馨、清水 哲夫、久保 利隆、蒲 江、竹延 大志、山田 貴壽、入沢 寿史
    • Organizer
      第82回応用物理学会秋季学術講演会
    • Related Report
      2021 Annual Research Report
  • [Presentation] アルカリ金属フリー環境下における気体原料を用いたマイクロメートルスケールWS2原子層の化学気相成長2021

    • Author(s)
      岡田 光博、岡田 直也、張 文馨、清水 哲夫、久保 利隆、石原 正統、入沢 寿史
    • Organizer
      第68回応用物理学会春季学術講演会
    • Related Report
      2020 Research-status Report
  • [Presentation] Growth of Monolayer MoS2 Lateral p-n Junction with p-type Substitutional Nb Doping2020

    • Author(s)
      岡田 光博、入沢 寿史、岡田 直也、張 文馨、清水 哲夫、久保 利隆、石原 正統
    • Organizer
      第59回フラーレン・ナノチューブ・グラフェン総合シンポジウム
    • Related Report
      2020 Research-status Report
  • [Presentation] Micrometer-scale monolayer WS2 crystal grown by alkali metal free gas source chemical vapor deposition with H2S and WF6 precursors2020

    • Author(s)
      岡田 光博、岡田 直也、張 文馨、清水 哲夫、久保 利隆、石原 正統、入沢 寿史
    • Organizer
      2020 International Conference on Solid State Devices and Materials
    • Related Report
      2020 Research-status Report
    • Int'l Joint Research
  • [Presentation] 元素置換ドープによるMoS2ラテラルホモp-n接合の実現2020

    • Author(s)
      岡田 光博、入沢 寿史、岡田 直也、張 文馨、清水 哲夫、久保 利隆
    • Organizer
      第67回応用物理学会春季学術講演会
    • Related Report
      2019 Research-status Report
  • [Presentation] 古典力学的手法によるファンデルワールス・ヘテロエピタキシーの再現2019

    • Author(s)
      岡田 光博、内山 揚介、清水 哲夫、久保 利隆、北浦 良
    • Organizer
      第57回フラーレン・ナノチューブ・グラフェン総合シンポジウム
    • Related Report
      2019 Research-status Report
    • Int'l Joint Research
  • [Presentation] Gas-source chemical vapor deposition growth of tungsten disulphide atomic layers with high grain size uniformity2019

    • Author(s)
      岡田 光博、岡田 直也、張 文馨、清水 哲夫、久保 利隆、入沢 寿史
    • Organizer
      Graphene Week 2019
    • Related Report
      2019 Research-status Report
    • Int'l Joint Research
  • [Presentation] アルカリ金属アシストによるNbドープされたMoS2のCVD合成とその物性2019

    • Author(s)
      岡田 光博、安藤 淳、清水 哲夫、久保 利隆
    • Organizer
      日本表面真空学会学術講演会
    • Related Report
      2019 Research-status Report
  • [Patent(Industrial Property Rights)] 二硫化タングステン含有膜、およびその作製方法2021

    • Inventor(s)
      岡田 光博他
    • Industrial Property Rights Holder
      国立研究開発法人 産業技術総合研究所
    • Industrial Property Rights Type
      特許
    • Filing Date
      2021
    • Related Report
      2021 Annual Research Report

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

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