Faculty Profiles - SUZUKI Atsushi

Papers - SUZUKI Atsushi

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Effects of light irradiation on the photovoltaic performance and crystal lattices of organic–inorganic perovskites in solar cells International journal

Haruto Shimada , Takeo Oku Tomoki Yamamoto, Iori Ono, Atsushi Suzuki, Kouichirou Harada,

Next Energy 8 100263 2025.3

Fabrication and Characterization of CH3NH3PbI3 Perovskite Photovoltaic Devices with Decaphenylcyclopentasilane Hole Transport Layers Reviewed

Keisuke Kuroyanagi, Takeo Oku, Iori Ono, Haruto Shimada, Atsushi Suzuki, Tomoharu Tachikawa and Sakiko Fukunishi,

Coatings 15 253 2025.2

Fabrication and Characterization of Perovskite Solar Cells Using Metal Phthalocyanines and Naphthalocyanines

87 ( 1 ) 6 2025.2

Effects of K- or Ge-additions to formamidinium-based perovskite crystals on electronic structures and photovoltaic properties

Ryo Sobajima, Takeo Oku, Riku Okumura, Iori Ono, Atsushi Suzuki, Tomoharu Tachikawa, Tomoya Hasegawa, Sakiko Fukunishi

Chemical Physics Letters 865 141937 2025.2

First-principles calculation on electronic structures, phonon dispersions, electronic and thermal conductivity and molecular dynamics of CsYbCl3 perovskite crystal

Atsushi Suzuki, Takeo Oku

Computational Condensed Matter 42 e01008 2025.1

Promoted formation of photoactive α-formamidinium cesium lead triiodide perovskite crystals by germanium addition Reviewed

Ayu Enomoto, Atsushi Suzuki, Takeo Oku and Haruto Shimada

Inorganics 13 15 2025.1

Electronic structures, thermal properties and molecular dynamics of CsGdCl3 and CsNdCl3 perovskite crystals by first-principles calculations

Atsushi Suzuki, Takeo Oku

Journal of Physics and Chemistry of Solids 194 112243 2024.8

Efects of metal phthalocyanine and naphthalocyanine on perovskite solar cells Reviewed

Atsushi Suzuki, Naoki Ohashi, Takeo Oku, Tomoharu Tachikawa, Tomoya Hasegawa, Sakiko Fukunishi

Journal of Electronic Materials 53 6049 - 6063 2024.7

Effects of neodymium or ytterbium addition to CH3NH3PbI3 perovskite solar cells inserted with decaphenylcyclopentasilane Reviewed

Kotaro Yamamoto, Atsushi Suzuki, Riku Okumura, Ayu Enomoto, Iori Ono, Takeo Oku, Sakiko Fukunishi, Tomoharu Tachikawa, Tomoya Hasegawa

Results in Surfaces and Interfaces 15 100224 2024.5

Accelerated formation of photoactive formamidinium-based lead triiodide perovskite crystals by the addition of copper iodide Reviewed

Riku Okumura, Takeo Oku, Atsushi Suzuki

Chemistry of Inorganic Materials 3 100052 2024.4

Electronic structures of lead-free Sn- or Ge-hybrid perovskite halides studied by first-principles calculation Reviewed

5 100174 2024.3

Effects of guanidinium iodide surface treatment on CH3NH3PbI3 perovskite solar cells with added decaphenylcyclopentasilane Reviewed

Keisuke Kuroyanagi, Takeo Oku, Iori Ono, Riku Okumura, Ayu Enomoto, Atsushi Suzuki, Sakiko Fukunishi, Tomoharu Tachikawa, Tomoya Hasegawa

Nano Trends 5 100030 2024.2

Effects of alkali metals or Cu+ addition to α-FAPbI3 perovskite crystals on electronic structures and photovoltaic properties Reviewed

Riku Okumura, Takeo Oku, and Atsushi Suzuki

Japanese Journal of Applied Physics 63 02SP21 2024.1

Effects of ethylammonium and rubidium addition to guanidinium-based CH3NH3PbI3 perovskite photovoltaic devices prepared at 190 ◦C in ambient air Reviewed

Iori Ono, Takeo Oku, Atsushi Suzuki, Sakiko Fukunishi, Tomoharu Tachikawa, Tomoya Hasegawa

Materials Today Communications 38 107623 2023.11

Electronic structures and photovoltaic properties of copper- or tin-doped cesium-based perovskite crystals Reviewed

Ayu Enomoto, Atsushi Suzuki, Takeo Oku, Sakiko Fukunishi, Tomoharu Tachikawa, Tomoya Hasegawa

Open Ceramics 16 100476 2023.9

Electronic structures and properties of lead-free cesium- or rubidium-based perovskite halide compounds by first-principles calculations Reviewed

Riku Okumura, Takeo Oku, Atsushi Suzuki

Nano Trends 4 100020 2023.9

Electronic structures and molecular dynamics of gadolinium-doped FAPbI<inf>3</inf> perovskite crystals Reviewed

Suzuki A., Oku T.

Japanese Journal of Applied Physics 62 ( SK ) 2023.8

Language：English Publishing type：Research paper (scientific journal) Publisher：Japanese Journal of Applied Physics

The additive effect of a gadolinium ion into a formamidinium lead iodide (FAPbI3) perovskite crystal on electronic structures and molecular dynamics was investigated for improving photovoltaic performance with stability. The electronic structures, band structure, partial density of state, and molecular dynamics were determined by first-principles calculation. The band distribution and charge transfer between the 5d orbital of the gadolinium atom, the 5p orbital of the iodine atom, and the 6p orbital of the lead atom promoted the carrier generation and diffusion related to short-circuit current density. The enthalpy and kinetic energy prompted stabilization of the gadolinium-doped crystal with a slight distortion of coordination structure, as compared with the decomposition of the FAPbI3 crystal. Diffusion coefficients of iodine and lead ions in the FAPbI3 crystal with defect were increased, predicting decomposition. The gadolinium-doped FAPbI3 perovskite crystal has great potential for applications in photovoltaic devices by improving photovoltaic performance.

DOI： 10.35848/1347-4065/acbec0

Scopus

Other Link： https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=85150935671&origin=inward

First-principles calculations and device characterizations of formamidinium-cesium lead triiodide perovskite crystals stabilized by germanium or copper Reviewed

Enomoto A., Suzuki A., Oku T., Fukunishi S., Tachikawa T., Hasegawa T.

Japanese Journal of Applied Physics 62 ( SK ) 2023.8

Language：English Publishing type：Research paper (scientific journal) Publisher：Japanese Journal of Applied Physics

To avoid formation of the photo-inactive δ-phase of formamidinium-cesium lead triiodide, copper or germanium was added to the perovskite compounds to stabilize the photoactive α-phase. It was found that the substitution of lead by germanium (Ge) or copper (Cu) provided the stabilization of the α-phase in the present work. The first-principles molecular dynamics calculations indicated that displacements of formamidinium molecules were suppressed by the Ge doping. X-ray diffraction results indicated that the Ge or Cu doping of the perovskite compounds could be effective for suppression the phase transition from α- to δ-phase.

DOI： 10.35848/1347-4065/acc6d8

Scopus

Other Link： https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=85153241878&origin=inward

First-principles calculation analysis and photovoltaic properties of Cu compound-added perovskite solar cells Reviewed

Okumura R., Oku T., Suzuki A., Fukunishi S., Tachikawa T., Hasegawa T.

Japanese Journal of Applied Physics 62 ( SK ) 2023.8

Language：English Publishing type：Research paper (scientific journal) Publisher：Japanese Journal of Applied Physics

Experiments and first-principles calculations were performed to investigate the effects of Cu substitution in CH3NH3PbI3 perovskite crystals. The first-principles calculations indicated that the energy level of the Cu d orbital formed above the VB maximum would be an acceptor or defect level. The effect of Cu addition on device properties was investigated, and the device with added 2% Cu provided higher efficiencies than the standard device. On the other hand, the decrease in short-circuit current density with increasing Cu content would be attributed to the defect level of the Cu d orbitals. First-principles calculations and experimental results provided insight into the function of Cu in CH3NH3-based perovskite crystals.

DOI： 10.35848/1347-4065/accaef

Scopus

Other Link： https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=85157992003&origin=inward

Metallophtalocyanine Used Interface Engineering for Improving Long-Term Stability of Methylammonium Lead Triiodide Perovskite Reviewed

Chihiro Ogawa, Atsushi Suzuki, Takeo Oku, Sakiko Fukunishi, Tomoharu Tachikawa, and Tomoya Hasegawa

Phys. Status Solidi A 220 ( 12 ) 2300038 2023.6

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Papers - SUZUKI Atsushi