The development of plasmonic antennae realizing light harvesting/localization and its application to solar cells

2015 Fiscal Year Final Research Report

• Project/Area Number: 23225006
• Research Category: Grant-in-Aid for Scientific Research (S)
• Allocation Type: Single-year Grants
• Research Field: Functional materials/Devices
• Research Institution: Hokkaido University
• Principal Investigator: Misawa Hiroaki 北海道大学, 電子科学研究所, 教授 (30253230)
• Co-Investigator(Kenkyū-buntansha): KURAKOSHI Kei 北海道大学, 大学院理学研究院, 教授 (40241301)
• Co-Investigator(Renkei-kenkyūsha): UENO Kosei 北海道大学, 電子科学研究所, 准教授 (00431346) ; MURAZAWA Naoki 北海道大学, 電子科学研究所, 助教 (40455621) ; OSHIKIRI Tomoya 北海道大学, 電子科学研究所, 助教 (60704567) ; UEHARA Hiyori 北海道大学, 電子科学研究所, 博士研究員 (20725329)
• Research Collaborator: LECARME Olivier
• Project Period (FY): 2011-04-01 – 2016-03-31
• Keywords: 局在プラズモン / ナノ材料 / 光物性

Outline of Final Research Achievements

We have successfully elucidated that oxygen evolution was induced as a result of water oxidation in the photoelectric conversion system which employs gold nanostructures showing localized surface plasmon (LSP) as an optical antenna. It was also clarified that the water oxidation is induced at a restricted nanospace near gold/semiconductor/water interface, which were visualized by photoelectrochemical polymerization. These principles have developed artificial photosynthesis, so that overall water splitting and ammonia synthetic systems were successfully constructed. On the other hand, we have clarified that quadrupole plasmon resonances and optical antennae utilizing strong coupling between LSP and molecular system shows efficient light confinement function, which were studied by the developed time-resolved photoemission electron microscopy in this study. Furthermore, we have successfully developed all solid state plasmonic photovoltaic cell using nickel oxide as a hole transport layer.

Free Research Field

光化学