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金属-半導体周期構造によるプラズモン誘起電荷分離と光機能デバイスへの応用

Research Project

Project/Area Number 17J05208
Research Category

Grant-in-Aid for JSPS Fellows

Allocation TypeSingle-year Grants
Section国内
Research Field Inorganic industrial materials
Research InstitutionThe University of Tokyo

Principal Investigator

ウー リン  東京大学, 工学系研究科, 特別研究員(DC2)

Project Period (FY) 2017-04-26 – 2019-03-31
Project Status Completed (Fiscal Year 2017)
Budget Amount *help
¥2,100,000 (Direct Cost: ¥2,100,000)
Fiscal Year 2017: ¥1,100,000 (Direct Cost: ¥1,100,000)
Keywordsplasmon / charge separation / metal halfshell arrray / photochemistry / photovoltaics
Outline of Annual Research Achievements

This study was focused on two dimensionally ordered and interconnected Au halfshell arrays on SiO2@TiO2 core-shell colloidal crystals.
(1) Photoelectrochemical properties of Au Halfshells with Different Sizes
Au halfshell arrays with different sizes were obtained by evaporating Au onto the SiO2@TiO2 colloidal crystals with various SiO2 cores. The optical properties of the Au halfshell arrays are studied both experimentally and computationally. The electrodes with Au halfshell arrays showed broad absorption in the range examined (300-1000 nm). It was found that the photoelectrode with the middle-sized SiO2 cores of 374 nm diameter shows the highest PICS-based photocurrent responses. According to the FDTD simulated results, the high responses can be explained in terms of the high electric field intensity at the electrode.
(2) Photovoltaic Cells with Gold, Silver, and Copper Halfshell Arrays
Solid-state cells were developed by taking advantage of the two-dimensional structure of the metal halfshell array, which serves both as a light absorber and a current collector. Under visible light irradiation, all the cells generated photovoltage between the transparent fluorine-doped tin oxide electrode and the metal halfshell array electrode. The photovoltaic properties of Ag halfshell cells were compared with those of Au and Cu halfshell cells. The Ag halfshell cells had higher photovoltaic performance than Au and Cu halfshell cells, achieving the highest power conversion efficiency (PCE) among the solid-state PICS devices.

Research Progress Status

翌年度、交付申請を辞退するため、記入しない。

Strategy for Future Research Activity

翌年度、交付申請を辞退するため、記入しない。

Report

(1 results)
  • 2017 Annual Research Report
  • Research Products

    (2 results)

All 2017

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

  • [Journal Article] Plasmonic Photovoltaic Cells with Dual-Functional Gold, Silver, and Copper Halfshell Arrays2017

    • Author(s)
      L. Wu, G. M. Kim, H. Nishi, and T. Tatsuma
    • Journal Title

      Langmuir

      Volume: 33 Issue: 36 Pages: 8976-8981

    • DOI

      10.1021/acs.langmuir.7b02072

    • Related Report
      2017 Annual Research Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Two-Dimensional Arrays of Au Halfshells with Different Sizes for Plasmon-Induced Charge Separation2017

    • Author(s)
      Wu, Ling; Tsunenari, Natsumi; Nishi, Hiroyasu; Sugawa, Kosuke; Otsuki, Joe; Tatsuma, Tetsu
    • Journal Title

      ChemistrySelect

      Volume: 2 Issue: 13 Pages: 3744-3749

    • DOI

      10.1002/slct.201700797

    • Related Report
      2017 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research

URL: 

Published: 2017-05-25   Modified: 2024-03-26  

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