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Research on behavior of the recombination defect of minority carriers depending on the internal built in potential in PN junctions

Research Project

Project/Area Number 18K04225
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Review Section Basic Section 21050:Electric and electronic materials-related
Research InstitutionTokyo University of Agriculture and Technology

Principal Investigator

Samesima Toshiyuki  東京農工大学, 工学(系)研究科(研究院), 産学官連携研究員 (30271597)

Co-Investigator(Kenkyū-buntansha) 水野 智久  神奈川大学, 理学部, 教授 (60386810)
Project Period (FY) 2018-04-01 – 2022-03-31
Project Status Completed (Fiscal Year 2021)
Budget Amount *help
¥4,420,000 (Direct Cost: ¥3,400,000、Indirect Cost: ¥1,020,000)
Fiscal Year 2020: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2019: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2018: ¥1,820,000 (Direct Cost: ¥1,400,000、Indirect Cost: ¥420,000)
Keywords作製 / 評価技術 / マイクロ波フリーキャリヤ吸収 / シリコン / 効少数キャリヤライフタイム / 内蔵電位 / キャリヤ拡散 / パッシベーション / 実効キャリヤライフタイム / キャリヤ濃度 / 光侵入長 / 再結合欠陥 / PN接合 / イオン注入 / 活性化 / 375 nm紫外レーザダイオード / キャリヤライフタイム / 少数キャリヤ / バイアス / ソーラーセル
Outline of Final Research Achievements

We demonstrated the minority carrier effective lifetime(τeff)of the crystalline silicon substrates at the process steps PN junction formation and also experimentally reported change in τeff of the PN junction under bias voltages application. τeff was markedly decreased by ion-implantation of boron and phosphorus dopant atoms because of generation of serious carrier recombination defects. It was increased by 800oC heating for activating the dopant atoms because the defect states were markedly reduced. After formation of electrodes on PN junction, inverse bias decreasedτeff because the high built-in potential blocked the diffusion of minority carriers. On the other hand, forward bias increased τeff because low built-in potential allowed their diffusion.

Academic Significance and Societal Importance of the Research Achievements

本研究プロジェクトにより、ソーラーセルやトランジスタ製造に広く用いられるPN接合にバイアスを印加した時の実効小数キャリヤライフタイムτeffの挙動を明らかにした。即ち逆バイアスを印加した時シリコン半導体内に形成される高い内蔵電位が障壁となりキャリヤの拡散が阻害されてτeffは低下する。対して順バイアスの時内蔵電位は小さくなり、刈谷の拡散が可能となりτeffは増大することが明らかになった。

Report

(5 results)
  • 2021 Annual Research Report   Final Research Report ( PDF )
  • 2020 Research-status Report
  • 2019 Research-status Report
  • 2018 Research-status Report
  • Research Products

    (12 results)

All 2021 2020 2019 2018 Other

All Int'l Joint Research (2 results) Journal Article (1 results) (of which Int'l Joint Research: 1 results,  Peer Reviewed: 1 results,  Open Access: 1 results) Presentation (8 results) (of which Int'l Joint Research: 6 results) Remarks (1 results)

  • [Int'l Joint Research] リヨン大学(フランス)

    • Related Report
      2019 Research-status Report
  • [Int'l Joint Research] リヨン大学(フランス)

    • Related Report
      2018 Research-status Report
  • [Journal Article] MICROWAVE RAPID HEATING SYSTEM USING CARBON HEATING TUBE2019

    • Author(s)
      T. Sameshima, T. Kikuchi, T. Uehara, T. Arima, M. Hasumi, T. Miyazaki, G. Kobayashi, and I. Serizawa
    • Journal Title

      AMPERE

      Volume: AMPERE 2019 Pages: 318-326

    • DOI

      10.4995/ampere2019.2019.9756

    • Related Report
      2019 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Presentation] 935 GHz マイクロ波透過測定を用いたシリコンの電気特性評価2021

    • Author(s)
      蓮見 真彦、鮫島 俊之、水野 智久
    • Organizer
      薄膜材料デバイス研究会
    • Related Report
      2021 Annual Research Report
  • [Presentation] Non-Destructive 9.35 GHz Microwave Sensing System for Investigating Electrical Properties of Silicon2020

    • Author(s)
      T. Sameshima, M. Hasumi, T. Mizuno
    • Organizer
      2020 International Conference on Solid State Devices and Materials
    • Related Report
      2020 Research-status Report
    • Int'l Joint Research
  • [Presentation] Carbon Heating Tube Rapid Heating System for Fabricating Silicon Solar Cells2019

    • Author(s)
      T. Miyazaki
    • Organizer
      Active Matrix Flatpanel Display and devices
    • Related Report
      2019 Research-status Report
    • Int'l Joint Research
  • [Presentation] Optimization of carbon heating tube rapid heating system by electric field analysis using finite element method2019

    • Author(s)
      T. Uehara
    • Organizer
      第80回応用物理学会学術講演会
    • Related Report
      2019 Research-status Report
  • [Presentation] REDUCTION IN CONNECTING RESISTIVITY OF INTERMEDIATE ADHESIVE LAYER FOR MECHANICALLY STACKED MULTI-JUNCTION SOLAR CELLS2018

    • Author(s)
      Toshiyuki Sameshima
    • Organizer
      GRAND RENEWABLE ENERGY 2018 International Conference and Exhibition
    • Related Report
      2018 Research-status Report
    • Int'l Joint Research
  • [Presentation] PHOTO-INDUCED MINORITY CARRIER ANNIHILATION FOR SILICON SAMPLES WITH METAL INSULATOR SEMICONDUCTOR STRUCTURE2018

    • Author(s)
      Toshiyuki Sameshima
    • Organizer
      GRAND RENEWABLE ENERGY 2018 International Conference and Exhibition
    • Related Report
      2018 Research-status Report
    • Int'l Joint Research
  • [Presentation] TRANSPARENT AND CONDUCTIVE LAYERS USED FOR REDUCING OPTICAL REFLECTION LOSS FOR FABRICATING MECHANICALLY STACKED MULTI-JUNCTION SOLAR CELLS2018

    • Author(s)
      Masahiko Hasumi
    • Organizer
      GRAND RENEWABLE ENERGY 2018 International Conference and Exhibition
    • Related Report
      2018 Research-status Report
    • Int'l Joint Research
  • [Presentation] Surface Passivation of Crystalline Silicon by Heat Treatment in Liquid Water and Its Application to Improve the Interface Properties of Metal-Oxide-Semiconductor Structures2018

    • Author(s)
      Toshiyuki Sameshima
    • Organizer
      THE 25th INTERNATIONAL WORKSHOP ON ACTIVE-MATRIX FLATPANEL DISPLAYS AND DEVICES
    • Related Report
      2018 Research-status Report
    • Int'l Joint Research
  • [Remarks] 東京農工大学鮫島研究室HP

    • URL

      http://web.tuat.ac.jp/~sameken/index.html

    • Related Report
      2018 Research-status Report

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Published: 2018-04-23   Modified: 2023-01-30  

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