Updated on 2024/01/09

写真a

 
Takeshita Tatsuya
 

Degree

  • Doctor (Engineering)   Coursework ( 2018.3   Fukui University of Technology )

Research Interests

  • Organic device

  • Self-assembly

  • Nanoparticle

  • Photocatalysis

Research Areas

  • Nanotechnology/Materials / Applied condensed matter physics

  • Manufacturing Technology (Mechanical Engineering, Electrical and Electronic Engineering, Chemical Engineering) / Electron device and electronic equipment

Education

  • Fukui University of Technology   Department of Environmental and Biological Chemistry   Graduated

    - 2014.3

  • Fukui University of Technology   Department of Applied Science and Engineering   Doctor's Course   Completed

    - 2018.3

Research History

  • World Intec Co.,Ltd.   Research and Development   Research Employed

  • Fukui University of Technology   Lecturer

    2020.4

Professional Memberships

  • Cyclodextrin Symposium

  • The Japanese Photochemistry Association

  • The Chemical Society of Japan

 

Papers

  • Decomposition of Unpolarized Fluorescence Spectrum of Uniaxially Oriented 1,3,5-Triphenylbenzene Microcrystals Into Polarized Fluorescence Spectra Reviewed

    Michihiro Hara, Tatsuya Takeshita, Hiroyuki Kurata, Tsunehisa Kimura

    Journal of Fluorescence   2023.2

  • Evaluation of darrow red–organosilane composite as a photosensitizer for application in dye-sensitized zinc oxide photocatalysts: DFT and TD-DFT studies Reviewed

    Tatsuya Takeshita & Dai Kinoshita

    Journal of Molecular Modeling   28 ( 407 )   2022.12

  • Effect of the TiO2 surface modification with 3-glycidyloxypropyltrimethoxysilane on the aggregation of cresyl violet: Application to a dye-sensitized solar cell Reviewed

    Tatsuya Takeshita

    Materials Chemistry and Physics   286   2022.7

    　More details

    Dye aggregation is a typical phenomenon occurring in dye-sensitized solar cells (DSSCs), which causes a decrease in the electron injection efficiency from the photoexcited dye to titanium dioxide (TiO2). As this results in a decrease in the photovoltaic performance, it cannot be ignored in the study of DSSCs. This paper reports a DSSC involving a TiO2 electrode chemically modified by cresyl violet (CV) covalently attached to 3-glycidyloxypropyltrimethoxysilane (GPTMS). The aim of the study is to understand the influence of silane coupling agents (SCAs) on dye aggregation. Aggregation of CV occurring on the TiO2 surface was prevented by GPTMS treatment on the TiO2 surface. This result was revealed by the decreased absorption intensity of the dimeric band observed in the total transmittance spectra. Density functional theory calculations and fluorescence decay curve measurements indicated that the CV covalently attached to GPTMS acts as a photosensitizing dye in DSSCs. As a result, the photovoltaic performance of DSSCs containing CV was enhanced by preventing its aggregation upon GPTMS treatment onto the TiO2 surface (7-fold increase: 0.0020%–0.014%). We concluded that TiO2 surfaces treated with SCAs can help to prevent dye aggregation, and therefore, enhance the photovoltaic performance of DSSCs.

  • DFT and TD-DFT Study on Azobenzene-Based Dye Covalently Attached to Silane Coupling Agents: Toward Dye-Sensitized TiO2 Catalyst and Dye-Sensitized Solar Cell Applications Reviewed

    Tatsuya Takeshita

    ChemistrySelect   6 ( 24 )   6011 - 6018   2021.6

  • Effect of cyclodextrin cavity size on the photovoltaic performance of unanchored ruthenium(II)polypyridine complex-containing dye-sensitized solar cells Reviewed

    Michihiro Hara, Tatsuya Takeshita, Takao Umeda

    Journal of Photonics for Energy   10 ( 4 )   045503   2020.11

  • Computational Study of Cresyl Violet Covalently Attached to the Silane Coupling Agents: Application to TiO2-Based Photocatalysts and Dye-Sensitized Solar Cells Reviewed

    Tatsuya Takeshita

    nanomaterials   10 ( 10 )   1958   2020.10

  • Photoionization and trans-to-cis isomerization of β-cyclodextrin-encapsulated azobenzene induced by two-color two-laser-pulse excitation Reviewed

    竹下 達哉、原 道寛

    Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy   193   475 - 479   2018.3

  • Light-Driven Proton Release of Spirobenzopyran-Derived Protonated Photomerocyanine in Cyclodextrin Aqueous Solution Reviewed

    竹下 達哉、矢野 篤、原 道寛

    ChemistrySELECT   2 ( 34 )   11288 - 11292   2017.12

  • Improvement of photoionization efficiency of diarylethene-cyclodextrin complexes by using multi-laser pulse excitation Reviewed

    竹下 達哉、蔵田 浩之、原 道寛

    Journal of Photochemistry and Photobiology A: Chemistry   344   28 - 35   2017.7

  • Fabrication of a dye-sensitized solar cell containing a noncarboxylated spiropyran-derived photomerocyanine with cyclodextrin Reviewed

    竹下 達哉、梅田 孝男、原 道寛

    Journal of Photochemistry and Photobiology A: Chemistry   333   87 - 91   2017.1

  • Resonant two-photon ionization of aromatic hydrocarbons included in cyclodextrins Reviewed

    竹下 達哉、笠羽 祐太、原 道寛

    Journal of Photochemistry and Photobiology A: Chemistry   321   128 - 136   2016.5

  • Application of a noncarboxylated dye compound in a dye-sensitized solar cell containing a cyclodextrin layer Reviewed

    竹下 達哉、梅田 孝男、大西 宣彰、原 道寛

    International Journal of Photoenergy   2015   2015.10

  • Resonance photoionization of a diarylethene derivative in the presence of cyclodextrins using multi-color multi-laser irradiation Reviewed

    竹下 達哉、原 道寛

    Journal of Photochemistry and Photobiology A: Chemistry   310   180 - 188   2015.9

  • Resonance two-photon ionization of diarylethene in the presence of cyclodextrin Reviewed

    原 道寛、三輪 誠、竹下 達哉、渡邊 翔平

    International Journal of Photoenergy   2013 ( 2013 )   2013.8

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Teaching Experience

  • Career Seminar I

    Institution：Fukui University of Technology

  • Special Seminar of Environmental Measurement Science

    Institution：Fukui University of Technology

  • Introduction of Environmental and Information Sciences

    Institution：Fukui University of Technology

  • Laboratory Experiments I

    Institution：Fukui University of Technology

  • Basic Chemistry

    Institution：Fukui University of Technology

  • Environmental and Information Sciences Exercise I

    Institution：Fukui University of Technology

  • Theme Study

    Institution：Fukui University of Technology

  • Introduction of Environmental and Food Chemistry

    Institution：Fukui University of Technology

  • Laboratory Experiments III

    Institution：Fukui University of Technology

  • Research for Graduation

    Institution：Fukui University of Technology

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