Institute for Materials Chemistry and Engineering, Kyushu University


LAST UPDATE 2023/08/08

  • 研究者氏名
    Researcher Name

    梶野祐人 Yuto KAJINO
    助教 Assistant Professor
  • 所属
    Professional Affiliation

    Institute for Materials Chemistry and Engineering, Kyushu University

    Division of Fundamental Organic Chemistry/ Nanomaterials and Interfaces
  • 研究キーワード
    Research Keywords

    Optical properties of low–dimensional materials
Research Subject
Optical physics in hybrid nanostructures of low-dimensional semiconductors

研究の背景 Background


Semiconductor nanomaterials exhibit unique optical properties, such as the quantum confinement effect. Moreover, owing to their large surface area-to-volume ratio, the surrounding environment significantly influences their inherent properties. Thus, by controlling the arrangement of nanomaterials and their surrounding materials, diverse property manipulations can be achieved. These tunabilities offer not only valuable insights into the development of optimal nanodevices, but also hold promise for the emergence of innovative optical phenomena through the formation of hybrid structures with heterogeneous nanomaterials.

研究の目標 Outcome


We establish to fabricate and control hybrid nanostructures that incorporate semiconductor nanocrystals and monolayers with metals and insulators. In addition, we elucidate the physical mechanisms behind the changes in optical properties that accompany the formation of homogeneously assembled structures and hetero complexes. This will be achieved through the combination of various spectroscopic methods (micro spectroscopy, laser spectroscopy) and nanostructure observation techniques (AFM, SEM, TEM). Ultimately, our goal is to construct a principle for optical physics in hybrid nanocomposites , primarily composed of semiconductor nanomaterials.

研究図Research Figure

Fig.1. Lateral and vertical assembly structures of CsPbBr3 nanocrystals (NCs). These unique configurations lead to significant modification in the optical properties of the resulting films.

Fig.2. (Top) Plasmonic nanocavity formed by self-assembled insulator nanoparticle (NP) films. (Middle) Plasmon resonance in metal NPs (MNPs). (Bottom) Plasmon-induced color change in multilayered MNP films.

Fig.3 Impact of surrounding environment on monolayer semiconductor materials. (Upper) Modification of optical transition energies due to dielectric screening. (lower) Tuning of exciton dynamics induced by topological structure.

文献 / Publications

Phys. Rev. Materials 6, L043001 (2022). Journal Phys. Rev. B, 103, L241410 (2021). J. Phys. Chem. C 123, 14097 (2019). Adv. Optical Mater. 11, 2202326 (2023). Nanoscale, 14, 9278 (2022).