Control of electronic states of organic materials using plasmonic WGM

2021 Fiscal Year Final Research Report

• Project/Area Number: 19K05632
• Research Category: Grant-in-Aid for Scientific Research (C)
• Allocation Type: Multi-year Fund
• Section: 一般
• Review Section: Basic Section 35030:Organic functional materials-related
• Research Institution: University of Hyogo
• Principal Investigator: Komino Takeshi 兵庫県立大学, 理学研究科, 准教授 (20547301)
• Project Period (FY): 2019-04-01 – 2022-03-31
• Keywords: 表面プラズモン / 量子状態制御 / MEMS / 分散関係計測 / 波動光学シミュレーション / WGM / モード結合

Outline of Final Research Achievements

The project clarified the followings: (1) development of an evaluation protocol for photoluminescence in organic WGM resonators. (2) spectral narrowing of photoluminescence from quasiparticles generated by combining exciton polariton and surface plasmon. (3) control of spectral narrowing wavelength in photonic WGM. (4) application of the WGM structure to photophysical phenomenon 1: energy transfer. (5) application of the WGM structure to photophysical phenomenon 2: singlet fission.
Especially in the subject (2), we revealed that presence of amplified spontaneous emission from the quasiparticles is closely related to the propagation length of surface plasmons.

Free Research Field

ナノフォトニクス　プラズモニクス

Academic Significance and Societal Importance of the Research Achievements

この成果は表面プラズモンが関与するマイクロ共振器を利用することにより有機材料の励起状態制御が可能であることを示すものである。また、この成果に立脚して、光・電子デバイスの発光波長や発光効率といった基本的な特性の向上に繋がる技術の開発が期待される。