• Search Research Projects
  • Search Researchers
  • How to Use
  1. Back to previous page

Fabrication of current-injected circularly polarized light emitting devices with near-infrared light emission based on electric-field-induced pn junctions

Research Project

Project/Area Number 21K04812
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Review Section Basic Section 28010:Nanometer-scale chemistry-related
Research InstitutionTokyo City University

Principal Investigator

Yusuke Hoshi  東京都市大学, 理工学部, 准教授 (70748962)

Co-Investigator(Kenkyū-buntansha) 石川 亮佑  東京都市大学, 理工学部, 教授 (50637064)
Project Period (FY) 2021-04-01 – 2024-03-31
Project Status Completed (Fiscal Year 2023)
Budget Amount *help
¥4,290,000 (Direct Cost: ¥3,300,000、Indirect Cost: ¥990,000)
Fiscal Year 2023: ¥780,000 (Direct Cost: ¥600,000、Indirect Cost: ¥180,000)
Fiscal Year 2022: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
Fiscal Year 2021: ¥1,950,000 (Direct Cost: ¥1,500,000、Indirect Cost: ¥450,000)
Keywords原子層 / 電流注入型発光素子 / 近赤外光 / 二テルル化モリブデン / 原子層物質 / 化学的気相成長法 / 金剥離法 / 二次元半導体結晶 / エレクトロルミネッセンス / CVD成長 / 二次元材料 / ファンデルワールス接合 / 円偏光
Outline of Research at the Start

本研究課題の特徴は、単層二テルル化モリブデンの面内に電場誘起によりpn接合を形成し、これにより近赤外光放射する円偏光エレクトロルミネッセンス素子を開発することである。化学的気相成長法を利用することで、大面積かつ高品質な単層二テルル化モリブデンの六方晶窒化ホウ素封止構造を作製し、これを母材としたデバイス開発を行う。
二テルル化モリブデンの特徴である①強いスピン起動相互作用、②近赤外光放射、③室温での強い励起子発光といった特徴を活かし、バレースピンフォトニクスの新たな研究分野の開拓を実現させる。

Outline of Final Research Achievements

In this study, current-injected light emitting devices with near-infrared light emission was developed by using a local electric field control technique in heterostructures, which consist of atomically thin layered materials. First, we developed a technique to form large area molybdenum ditelluride (MoTe2), which acts as the active layer in the light emitting device, by using several layer MoTe2 by chemical vapor deposition and single layer MoTe2 by the gold mediated exfoliation. In addition, it has been shown that electroluminescent devices can be fabricated using a local electric field control technique with MoTe2. This method was found to be effective for the development of valley photonics devices using two dimensional materials.

Academic Significance and Societal Importance of the Research Achievements

電流注入型発光素子を開発する場合、3次元的な結晶構造からなる半導体では結晶中に不純物をドーピングしPN接合を形成する必要がある。本研究では、局所電場制御技術を利用することで二次元半導体中の任意の領域においてキャリア密度を変調することに成功しており、これにより不純物ドーピングせずにMoTe2を発光層とした電流注入型発光素子作製に成功している。本研究で確立した手法は、バレー自由度に由来した基礎物性調査やオプトエレクトロニクス素子開発への基盤技術となる。

Report

(4 results)
  • 2023 Annual Research Report   Final Research Report ( PDF )
  • 2022 Research-status Report
  • 2021 Research-status Report
  • Research Products

    (25 results)

All 2024 2023 2022 2021

All Journal Article (1 results) (of which Peer Reviewed: 1 results,  Open Access: 1 results) Presentation (24 results) (of which Int'l Joint Research: 12 results)

  • [Journal Article] Tellurium nanosheets with structural anisotropy formed from defective MoTe2 multilayers2023

    • Author(s)
      Muranaka Shuto、Nogamida Satoshi、Hara Kosuke O.、Sawano Kentarou、Hoshi Yusuke
    • Journal Title

      AIP Advances

      Volume: 13 Issue: 7

    • DOI

      10.1063/5.0155417

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed / Open Access
  • [Presentation] Anisotropic wet etching of WSe2 multilayers assisted by photo-excited carriers2024

    • Author(s)
      S. Muranaka, N. Horikawa, R. Ishikawa, Y. Hoshi
    • Organizer
      The 66th Fullerenes-Nanotubes-Graphene General Symposium
    • Related Report
      2023 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Arイオン注入した多層MoTe2の熱処理によるテルルナノシート形成2024

    • Author(s)
      村中柊都, 野上田聖, 原康祐, 澤野憲太郎, 星裕介
    • Organizer
      第29回電子デバイス界面テクノロジー研究会
    • Related Report
      2023 Annual Research Report
  • [Presentation] 熱処理による単層2H-MoTe2チャネルFETの電気的特性への影響2024

    • Author(s)
      滋野博史, 山村陸斗, 渡邊賢司, 谷口尚, 星裕介
    • Organizer
      第71回応用物理学会 春季学術講演会
    • Related Report
      2023 Annual Research Report
  • [Presentation] Formation of a tellurium nanosheet with structural anisotropy by annealing defective MoTe2 multilayers2023

    • Author(s)
      S. Muranaka, S. Nogamida, K.O. Hara, K. Sawano, Y. Hoshi
    • Organizer
      The 65th Fullerenes-Nanotubes-Graphene General Symposium
    • Related Report
      2023 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Anisotropic wet etching of tungsten diselenide Multilayers by using H2O2-based etchant2023

    • Author(s)
      N. Horikawa, R. Ishikawa, K. Watanabe, T. Taniguchi, Y. Hoshi
    • Organizer
      The 65th Fullerenes-Nanotubes-Graphene General Symposium
    • Related Report
      2023 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Crystal quality of MoTe2 monolayer fabricated by gold-mediated exfoliation and its electrical properties2023

    • Author(s)
      R. Yamamura, K. Watanabe, T. Taniguchi, Y. Hoshi
    • Organizer
      2023 International Workshop on dielectric thin films for future electron devices - science and technology -
    • Related Report
      2023 Annual Research Report
    • Int'l Joint Research
  • [Presentation] NaClをアシスト剤として利用したMoO3薄膜のテルル化によるMoTe2成長2023

    • Author(s)
      村中柊都, 桐原芳治, 保井晃, 野平博司, 星裕介
    • Organizer
      第84回応用物理学会 秋季学術講演会
    • Related Report
      2023 Annual Research Report
  • [Presentation] 金剥離法で作製した単層 MoTe2の大気暴露による結晶性劣化2023

    • Author(s)
      山村陸斗, 渡邊賢司, 谷口尚, 星裕介
    • Organizer
      第84回応用物理学会 秋季学術講演会
    • Related Report
      2023 Annual Research Report
  • [Presentation] MoO3薄膜のTe化による多層MoTe2の相転移制御2023

    • Author(s)
      村中柊都,星裕介
    • Organizer
      第70回応用物理学会春季学術講演会
    • Related Report
      2022 Research-status Report
  • [Presentation] 二軸歪み単層遷移金属ダイカルコゲナイドの光学特性2023

    • Author(s)
      岩熊高志,星裕介
    • Organizer
      第70回応用物理学会春季学術講演会
    • Related Report
      2022 Research-status Report
  • [Presentation] Effect of thermal treatment on electrical properties of hBN-encapsulated MoTe22022

    • Author(s)
      Y. Odagiri, K. Watanabe, T. Taniguchi, Y. Hoshi
    • Organizer
      European Materials Research Society 2022 Spring meeting
    • Related Report
      2022 Research-status Report
    • Int'l Joint Research
  • [Presentation] Piezoelectricity of the hBN/1L-MoS2 heterostructure membrane2022

    • Author(s)
      C. Chiba, S. Sugawara, E. Kitayoshi, K. Watanabe, T. Taniguchi, K. Sawano, H. Fujita, Y. Hoshi
    • Organizer
      2022 International Conference on Solid State Devices and Materials?
    • Related Report
      2022 Research-status Report
    • Int'l Joint Research
  • [Presentation] CVD成長により作製した多層MoTe2の結晶構造評価2022

    • Author(s)
      村中柊都,小田切優真,星裕介
    • Organizer
      第84回応用物理学会秋季学術講演会
    • Related Report
      2022 Research-status Report
  • [Presentation] 金離法で作製した大面積な単層 MoTe2構造の光学特性2022

    • Author(s)
      山村陸斗,山勢海里,渡邊賢司,谷口尚,星裕介
    • Organizer
      第84回応用物理学会秋季学術講演会
    • Related Report
      2022 Research-status Report
  • [Presentation] Phase control in MoTe2 crystals by tellurization of thermally oxidized molybdenum thin films2022

    • Author(s)
      村中柊都,小田切優真,星裕介
    • Organizer
      第41回電子材料シンポジウム
    • Related Report
      2022 Research-status Report
  • [Presentation] 3層MoTe2面内PN接合のキャリア密度変調によるEL強度変化2022

    • Author(s)
      山勢海里,渡邊賢司,谷口尚,星裕介
    • Organizer
      第69回応用物理学会春季学術講演会
    • Related Report
      2021 Research-status Report
  • [Presentation] MoTe2/hBN積層構造の熱処理による電気特性への影響2022

    • Author(s)
      小田切優真,渡邊賢司,谷口尚,星裕介
    • Organizer
      第69回応用物理学会春季学術講演会
    • Related Report
      2021 Research-status Report
  • [Presentation] Investigation of a defect-assisted-metal formed by annealing MoTe2 crystals with Ar ion implantation2021

    • Author(s)
      Satoshi Nogamida, Shunya Hayashida, Kousuke O Hara, Kentarou Sawano, Yusuke Hoshi
    • Organizer
      European Materials Research Society 2021 Spring Meeting
    • Related Report
      2021 Research-status Report
    • Int'l Joint Research
  • [Presentation] Influences of thermal treatment on crystal quality of semiconducting MoTe2 monolayers encapsulated by hexagonal boron nitrides2021

    • Author(s)
      Yusuke Hoshi, Shunya Hayashida, Satoshi Nogamida, Kentarou Sawano, Kenji Watanabe, Takashi Taniguchi
    • Organizer
      European Materials Research Society 2021 Spring Meeting
    • Related Report
      2021 Research-status Report
    • Int'l Joint Research
  • [Presentation] Electroluminescence from hBN-encapsulated bilayer MoTe2 by dual back-gate voltage modulation2021

    • Author(s)
      Kairi Yamase, Shunya Hayashida, Kenji Watanabe, Takashi Taniguchi, Kentarou Sawano, Yusuke Hoshi
    • Organizer
      Compound Semiconductor Week 2021
    • Related Report
      2021 Research-status Report
    • Int'l Joint Research
  • [Presentation] Effects of hBN thickness on light outcoupling from hBN-encapsulated TMDC monolayers2021

    • Author(s)
      Yuma Odagiri, Shunya Hayashida, Kenji Watanabe, Takashi Taniguchi, Yusuke Hoshi
    • Organizer
      2021 International Conference on Solid State Devices and Materials
    • Related Report
      2021 Research-status Report
    • Int'l Joint Research
  • [Presentation] Layer number dependence of electroluminescence from MoTe2 p-n junction formed by dual back-gate voltage modulation2021

    • Author(s)
      Kairi Yamase, Kenji Watanabe, Takashi Taniguchi, Yusuke Hoshi
    • Organizer
      Graphene week 2021
    • Related Report
      2021 Research-status Report
    • Int'l Joint Research
  • [Presentation] Improvement of Electrical Properties in hBN-encapsulated MoTe2 Monolayers by Thermal Anneal2021

    • Author(s)
      Yusuke Hoshi, Yuma Odagiri, Shunya Hayashida, Kenji Watanabe, Takashi Taniguchi, Kentarou Sawano
    • Organizer
      International symposium on novel materials and quantum technologies (ISNTT) 2021
    • Related Report
      2021 Research-status Report
    • Int'l Joint Research
  • [Presentation] デュアルバックゲート電圧変調によるMoTe2面内PN接合の発光ダイオード2021

    • Author(s)
      山勢海里,林田隼弥,渡邊賢司,谷口尚,星裕介
    • Organizer
      第82回応用物理学会秋季学術講演会
    • Related Report
      2021 Research-status Report

URL: 

Published: 2021-04-28   Modified: 2025-01-30  

Information User Guide FAQ News Terms of Use Attribution of KAKENHI

Powered by NII kakenhi