Faculty Profiles - KAJINO YUTO

Information

写真a

KAJINO YUTO

Organization

Institute for Materials Chemistry and Engineering Department of Fundamental Organic Chemistry Assistant Professor
Graduate School of Sciences Department of Chemistry（Concurrent）

Contact information

Tel

0928026232

Profile

半導体、金属、絶縁体ナノ材料を組み合わせたナノ複合構造形成及び、それらの光物性に焦点を当てた研究を推進

Homepage

https://www.cm.kyushu-u.ac.jp/ktamada/
研究室HP

External link

Research Areas

Natural Science / Semiconductors, optical properties of condensed matter and atomic physics
Nanotechnology/Materials / Nanomaterials
Nanotechnology/Materials / Nanostructural physics

Degree

PhD (Science)

Research History

Kyushu University Institute for Materials Chemistry and Engineering Department of Fundamental Organic Chemistry Assistant Professor

2022.5 - Present
Kyushu University Institute for Materials Chemistry and Engineering Department of Fundamental Organic Chemistry Specially Appointed Assistant Professor

2022.1 - 2022.4
Kyushu University Institute for Materials Chemistry and Engineering Department of Fundamental Organic Chemistry Academic Researcher

2021.11 - 2021.12
Chiba University 大学院理学研究院 Academic Researcher

2021.4 - 2021.10
千葉大学大学院　理学研究院　特任研究員慈恵大学非常勤講師(物理学実験講師)

Research Interests・Research Keywords

Research theme： Optical properties of semiconductor nanocrystals, Plasmonics

Keyword： Optical physics

Research period： 2021.11 - 2023.6

Papers

Alternating Binary Multilayers of Alkanethiol-Modified Gold Nanoparticles and Quantum Dots with Artificial Three-Dimensional Structures and Rational Photoluminescence Reviewed

Rina Sato, Hideyuki Mitomo, Yuto Kajino, Masaki Matsubara, Takehiro Yachi, Megumi Suyama, Kaoru Tamada, Kiyoshi Kanie

ACS Applied Materials & Interfaces 2025.5

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Language：English Publishing type：Research paper (scientific journal)
Transfer printing of perovskite nanocrystal self-assembled monolayers via controlled surface wettability Reviewed

Yuto Kajino, Yuta Tanaka, Yukiko Aida, Yusuke Arima, Kaoru Tamada

Nanoscale 17 8651 - 8659 2025.2

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Authorship：Lead author,　Corresponding author Language：English Publishing type：Research paper (scientific journal)

本研究では、ペロブスカイトナノ粒子の自己組織化単粒子膜を自在に積層・パターン形成することを可能にする、ポリジメチルシロキサン（PDMS）膜を用いた膜転写手法を提案した。
具体的には、転写元および転写先基板の表面エネルギーをシランカップリングにより制御することで、ナノ粒子への追加処理を行うことなく、効率的な膜転写が可能であることを実証した。本成果は、様々なナノ光デバイスへの応用展開に資するものである。

DOI： 10.1039/D4NR05088F
Anti-Stokes photoluminescence from CsPbBr3 nanostructures embedded in a Cs4PbBr6 crystal

Kajino Y., Otake S., Yamada T., Kojima K., Nakamura T., Wakamiya A., Kanemitsu Y., Yamada Y.

Physical Review Materials 6 ( 4 ) 2022.4

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Publisher：Physical Review Materials

Lead halide perovskites possess high photoluminescence (PL) efficiency and strong electron-phonon interactions, and therefore optical cooling using up-conversion PL has been expected. We investigate anti-Stokes PL from green-luminescent Cs4PbBr6, whose origin is attributable to CsPbBr3 nanostructures embedded in a Cs4PbBr6 crystal. Because of the high transparency, low refractive index, and high stability of Cs4PbBr6, the green PL displays high external quantum efficiency without photodegradation. Time-resolved PL spectroscopy reveals the excitonic behaviors in the recombination process. The shape of the PL spectrum is almost independent of excitation photon energy, which means that the spectral width is determined by homogeneous broadening. We demonstrate that the phonon-assisted process dominates the Urbach tail of optical absorption and anti-Stokes PL at room temperature. Anti-Stokes PL is observed down to 70 K. We determine the temperature dependence of the Urbach energy and estimate the strength of the electron-phonon coupling. Our spectroscopic data show that CsPbBr3 nanostructures have potentially useful features for optical cooling.

DOI： 10.1103/PhysRevMaterials.6.L043001

Scopus

Presentations

CeO2ナノ粒子膜上での銀ナノ構造制御を通したプラズモニックナノキャビティの共鳴波長制御

梶野祐人、坂井翔太朗、相田裕輝子、有馬祐介、横哲、成基明、笘居高明、阿尻雅文、玉田薫

第72回応用物理学会春季学術講演会 2025.3

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Event date： 2025.3

Presentation type：Oral presentation (general)

Venue：東京理科大野田キャンパス
Manipulation of Self-Assembled Nanoparticle Films for Optical Property Tuning Invited International conference

Yuto Kajino

The 1st International Symposium on Molecular MaterialsforFuture (1st ISMMF) 2025.2

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Event date： 2025.2

Presentation type：Oral presentation (invited, special)

Venue：Sakure Hall, Sendai, Japan
ナノ光デバイス応用に向けた鉛ハライドペロブスカイトナノ粒子膜の光学特性制御

梶野祐人

日本学術会議国際光デー記念シンポジウム 2024.7

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Event date： 2024.7

Presentation type：Symposium, workshop panel (public)

Venue：日本学術会議講堂
Manipulation of Lateral and Vertical Structures and optical properties in Lead Halide Perovskite Nanocrystal Films International conference

Yuto Kajino, Yuta Tanaka, Yukiko Aida, Yusuke Arima, and Kaoru Tamada

The 11th International Conference on Molecular Electronics & Bioelectronics (M&BE11) 2024.7

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Event date： 2024.7

Presentation type：Oral presentation (general)

Venue：Shimane, JAPAN
表面濡れ性の制御によるペロブスカイトナノ粒子膜の転写

梶野祐人、田中悠太、相田裕輝子、有馬祐介、玉田薫

第71回応用物理学会春季学術講演会 2024.3

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Event date： 2024.3

Language：Japanese Presentation type：Oral presentation (general)

Venue：東京都市大学世田谷キャンパス Country：Japan
異種ハライドペロブスカイトの単一ナノ粒子膜ヘテロ接合界面におけるハロゲン交換の機構解明

松井信明、梶野祐人、相田裕輝子、有馬祐介、玉田薫

第71回応用物理学会春季学術講演会 2024.3

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Event date： 2024.3

Language：Japanese Presentation type：Oral presentation (general)

Venue：東京都市大学世田谷キャンパス Country：Japan

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Professional Memberships

日本物理学会
応用物理学会

Research Projects

ハライドペロブスカイトナノ粒子膜におけるナノ空間イオンダイナミクスの解明

Grant number：25K17916

若手研究

梶野祐人

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Grant type：Scientific research funding

Class subject

Introduction of Nanomaterials and Interfaces Ⅰ

2024.6 - 2024.8 Summer quarter
ナノ界面物性概論Ⅰ

2024.4 - 2024.6 Spring quarter