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

Fundamental study of polarity and screening charge effects of ferroelectric materials on pi conjugated materials for autonomous operational sensor application

Research Project

Project/Area Number 26630138
Research Category

Grant-in-Aid for Challenging Exploratory Research

Allocation TypeMulti-year Fund
Research Field Electronic materials/Electric materials
Research InstitutionNational Institute for Materials Science

Principal Investigator

Nagata Takahiro  国立研究開発法人物質・材料研究機構, 国際ナノアーキテクトニクス研究拠点, MANA研究者 (10421439)

Project Period (FY) 2014-04-01 – 2016-03-31
Project Status Completed (Fiscal Year 2015)
Budget Amount *help
¥3,900,000 (Direct Cost: ¥3,000,000、Indirect Cost: ¥900,000)
Fiscal Year 2015: ¥2,080,000 (Direct Cost: ¥1,600,000、Indirect Cost: ¥480,000)
Fiscal Year 2014: ¥1,820,000 (Direct Cost: ¥1,400,000、Indirect Cost: ¥420,000)
Keywords強誘電体 / 表面電荷 / ナノ界面 / 焦電性 / π電子伝導 / 電荷蓄積 / π電子制御 / 光電効果
Outline of Final Research Achievements

Ferroelectric materials exhibit spontaneous polarization and surface screening charge without the application of an electric field due to a lack of inversion symmetry and ionic bonds. In this research, we demonstrated the resistivity control of π conjugated materials on a ferroelectric material: LiNbO3 (LN) by the spontaneous polarization and pyroelectricity, which can be applied to sensor applications. We also demonstrated the screening charge localization by using a Schottky contact with LN, suggesting that the LN surface harvests electric energy from the environment. By combining these results, we found the possibility of a new sensor device that can be operated autonomously without external electrical source.

Report

(3 results)
  • 2015 Annual Research Report   Final Research Report ( PDF )
  • 2014 Research-status Report
  • Research Products

    (4 results)

All 2016 2015 2014

All Journal Article (1 results) (of which Peer Reviewed: 1 results,  Acknowledgement Compliant: 1 results) Presentation (1 results) (of which Int'l Joint Research: 1 results) Patent(Industrial Property Rights) (2 results)

  • [Journal Article] Screening Charge Localization at LiNbO3 Surface with Schottky Junction2016

    • Author(s)
      Takahiro Nagata, Toyohiro Chikyow, Kenji Kitamura
    • Journal Title

      Applied Physics Letters

      Volume: 未定

    • Related Report
      2015 Annual Research Report
    • Peer Reviewed / Acknowledgement Compliant
  • [Presentation] Crystallographic polarity effect of oxide on π conjugated system2015

    • Author(s)
      Takahiro Nagata, Yutaka Wakayama, Kenji Kitamura, and Toyohiro Chikyow
    • Organizer
      MANA-DIPC Workshop
    • Place of Presentation
      Donostia International Physics Center (Spain)
    • Year and Date
      2015-08-27
    • Related Report
      2015 Annual Research Report
    • Int'l Joint Research
  • [Patent(Industrial Property Rights)] 強誘電体キャパシタおよび電子デバイス2014

    • Inventor(s)
      長田貴弘、北村健二
    • Industrial Property Rights Holder
      物質・材料研究機構
    • Industrial Property Rights Type
      特許
    • Industrial Property Number
      2014-183184
    • Filing Date
      2014-09-09
    • Related Report
      2014 Research-status Report
  • [Patent(Industrial Property Rights)] 強誘電体キャパシタおよび電子デバイス2014

    • Inventor(s)
      長田貴弘、北村健二
    • Industrial Property Rights Holder
      物質・材料研究機構
    • Industrial Property Rights Type
      特許
    • Industrial Property Number
      2014-183194
    • Filing Date
      2014-09-09
    • Related Report
      2014 Research-status Report

URL: 

Published: 2014-04-04   Modified: 2017-05-10  

Information User Guide FAQ News Terms of Use Attribution of KAKENHI

Powered by NII kakenhi