イオンの再配列に基づく自発的pn接合と発光素子  [in Japanese] Light-emitting devices based on in-situ formed p-n junctions  [in Japanese]

Access this Article

Search this Article

Author(s)

Abstract

<p>同じ電荷であっても,電子とイオンは電圧印加に対して異なる挙動を示す.電子は電位勾配に従って輸送され,定常的な電流が観測されるのに対して,イオンは電極近傍で再配列して電気2重層を形成し,過渡的な電流が観測される.近年,この2つの異種電荷を同時に利用することで,新たな機能素子を実現する技術「イオントロニクス」が注目されている.本稿では,筆者らが研究をしている電解質と半導体を組み合わせ,イオンの再配列によってpn接合を自発的に誘起させて発光するLight-emitting Electrochemical Cellについて述べ,高性能なだけではないユニークな発光素子の可能性について紹介する.</p>

<p>There is a growing interest in "iontronics" that use semiconducting materials and electrolytes in single devices. Light-emitting electrochemical cells (LECs) are one of the representatives of such devices whose emitting layers are comprised of semiconducting polymers and electrolytes. Voltage application to LECs rearranges ions in emitting layers and form self-organized p-n homojunctions in semiconductors, so that efficient emission can be expected. However, the materials and operation techniques for controlling two different charges of ions and electrons have not yet been well established. Here, we show our recent LECs in which the electrolyte materials and device structures were carefully designed for efficient rearrangements of ions for electron/hole injection and light emission.</p>

Journal

  • Oyo Buturi

    Oyo Buturi 87(3), 175-180, 2018

    The Japan Society of Applied Physics

Codes

  • NII Article ID (NAID)
    130007715719
  • NII NACSIS-CAT ID (NCID)
    AN00026679
  • Text Lang
    JPN
  • ISSN
    0369-8009
  • NDL Article ID
    028886686
  • NDL Call No.
    Z15-243
  • Data Source
    NDL  J-STAGE 
Page Top