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Koichi Yamashita

Koichi Yamashita

D-Index & Metrics

Chemistry

D-Index
57
Citations
12271
World Ranking
11036
National Ranking
808

Overview

Koichi Yamashita is affiliated with the University of Tokyo in Japan. Their research spans several intersecting scientific disciplines, including chemistry, materials science, and engineering. The breadth of their work incorporates both theoretical and applied aspects, with a significant focus on molecular interactions and advanced materials.

The main fields of study in Yamashita's portfolio include:

  • Chemistry
  • Materials Science
  • Engineering

Within these broader categories, their subfields comprise:

  • Electrical and Electronic Engineering
  • Materials Chemistry
  • Physical and Theoretical Chemistry
  • Inorganic Chemistry
  • Organic Chemistry

Their principal research topics involve:

  • Perovskite Materials and Applications
  • Crystallography and molecular interactions
  • Chemical Thermodynamics and Molecular Structure
  • Advanced Photocatalysis Techniques
  • Chalcogenide Semiconductor Thin Films
  • Conducting polymers and applications
  • Inorganic Fluorides and Related Compounds

Yamashita has coauthored multiple papers with various researchers, frequently collaborating with:

  • Pradeep R. Varadwaj
  • Helder M. Marques
  • Arpita Varadwaj
  • M. Kaneko
  • Azusa Muraoka

Their work has appeared in prominent publication venues such as:

  • International Journal of Molecular Sciences
  • CrystEngComm
  • Physical Chemistry Chemical Physics
  • The Journal of Chemical Physics
  • Inorganics

Notable recent papers by Yamashita include:

  • Definition of the tetrel bond, 2023, CrystEngComm
  • Unveiling charge dynamics of visible light absorbing oxysulfide for efficient overall water splitting, 2021, Nature Communications
  • Phase evolution of electrochemically potassium intercalated graphite, 2021, Journal of Materials Chemistry A
  • Definition of the Pnictogen Bond: A Perspective, 2022, Inorganics
  • The Nitrogen Bond, or the Nitrogen-Centered Pnictogen Bond: The Covalently Bound Nitrogen Atom in Molecular Entities and Crystals as a Pnictogen Bond Donor, 2022, Compounds

Best Publications

  • Small photocarrier effective masses featuring ambipolar transport in methylammonium lead iodide perovskite: A density functional analysis

    Giacomo Giorgi;Jun-Ichi Fujisawa;Jun-Ichi Fujisawa;Hiroshi Segawa;Koichi Yamashita

  • Thermal degradation of poly((R)-3-hydroxybutyrate), poly(e-caprolactone), and poly((S)-lactide)

    Yoshihiro Aoyagi;Koichi Yamashita;Yoshiharu Doi

  • Charge Carrier Trapping at Surface Defects of Perovskite Solar Cell Absorbers: A First-Principles Study

    Hiroki Uratani;Koichi Yamashita

  • Black Phosphorus as a High-Capacity, High-Capability Negative Electrode for Sodium-Ion Batteries: Investigation of the Electrode/Electrolyte Interface

    Mouad Dahbi;Mouad Dahbi;Naoaki Yabuuchi;Naoaki Yabuuchi;Mika Fukunishi;Kei Kubota;Kei Kubota

  • Redox-responsive molecular helices with highly condensed π -clouds

    Eisuke Ohta;Hiroyasu Sato;Shinji Ando;Atsuko Kosaka

  • Cation Role in Structural and Electronic Properties of 3D Organic–Inorganic Halide Perovskites: A DFT Analysis

    Giacomo Giorgi;Jun Ichi Fujisawa;Jun Ichi Fujisawa;Hiroshi Segawa;Koichi Yamashita

  • The mechanism of slow hot-hole cooling in lead-iodide perovskite: first-principles calculation on carrier lifetime from electron-phonon interaction.

    Hiroki Kawai;Giacomo Giorgi;Andrea Marini;Koichi Yamashita

  • Theoretical study of the structure and optical properties of carbon-doped rutile and anatase titanium oxides

    Hideyuki Kamisaka;Takahisa Adachi;Koichi Yamashita

  • Electronic Band Structure of Transparent Conductor: Nb-Doped Anatase TiO2

    Taro Hitosugi;Hideyuki Kamisaka;Koichi Yamashita;Hiroyuki Nogawa

  • Ab initio MO study of neutral and cationic boron clusters

    Hiroshi Kato;Koichi Yamashita;Keiji Morokuma

  • Enzymatic degradation of poly(L-lactide) film by proteinase K: quartz crystal microbalance and atomic force microscopy study.

    Koichi Yamashita;Yoshihiro Kikkawa;Kenji Kurokawa;Yoshiharu Doi

  • ‘‘Direct’’ calculation of quantum mechanical rate constants via path integral methods: Application to the reaction path Hamiltonian, with numerical test for the H+H2 reaction in 3D

    Koichi Yamashita;William H. Miller

  • Significance of hydrogen bonding and other noncovalent interactions in determining octahedral tilting in the CH 3 NH 3 PbI 3 hybrid organic-inorganic halide perovskite solar cell semiconductor

    Pradeep R. Varadwaj;Arpita Varadwaj;Arpita Varadwaj;Helder M. Marques;Koichi Yamashita

  • Organic - Inorganic hybrid lead iodide perovskite featuring zero dipole moment guanidinium cations: A theoretical analysis

    Giacomo Giorgi;Jun Ichi Fujisawa;Jun Ichi Fujisawa;Hiroshi Segawa;Koichi Yamashita

  • Organic–inorganic halide perovskites: an ambipolar class of materials with enhanced photovoltaic performances

    Giacomo Giorgi;Koichi Yamashita

  • Density functional theory based first-principle calculation of Nb-doped anatase TiO2 and its interactions with oxygen vacancies and interstitial oxygen.

    Hideyuki Kamisaka;Taro Hitosugi;Takahiro Suenaga;Tetsuya Hasegawa

  • Ultrafast vibrationally-induced dephasing of electronic excitations in PbSe quantum dots.

    Hideyuki Kamisaka;Svetlana V. Kilina;Koichi Yamashita;Oleg V. Prezhdo

  • The Effects of the Organic–Inorganic Interactions on the Thermal Transport Properties of CH3NH3PbI3

    Tomoyuki Hata;Giacomo Giorgi;Giacomo Giorgi;Koichi Yamashita

  • New ab initio potential surfaces and three-dimensional quantum dynamics for transition state spectroscopy in ozone photodissociation

    Koichi Yamashita;Keiji Morokuma;Frederic Le Quéré;Claude Leforestier

  • Path integral Monte Carlo study on the structure and absorption spectra of alkali atoms (Li, Na, K) attached to superfluid helium clusters

    Akira Nakayama;Koichi Yamashita

Frequent Co-Authors

Hiroshi Segawa
Hiroshi Segawa University of Tokyo
Keiji Morokuma
Keiji Morokuma Kyoto University
Tokio Yamabe
Tokio Yamabe Nagasaki Institute of Applied Science
Tucker Carrington
Tucker Carrington Queen's University
Tetsuya Hasegawa
Tetsuya Hasegawa University of Tokyo
Kei Kubota
Kei Kubota Tokyo University of Science
Takeo Yamaguchi
Takeo Yamaguchi Tokyo Institute of Technology
Shinichi Komaba
Shinichi Komaba Tokyo University of Science
Taro Hitosugi
Taro Hitosugi University of Tokyo

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