Naoki Kishi
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View article: Tuning Electrical, Mechanical, and Structural Properties of <scp>PEDOT</scp> : <scp>PSS</scp> Films Through the Surfactant and High Boiling Solvent Dual Modification
Tuning Electrical, Mechanical, and Structural Properties of <span>PEDOT</span> : <span>PSS</span> Films Through the Surfactant and High Boiling Solvent Dual Modification Open
In this study, we investigated a dual modification strategy using N,N‐dimethylformamide (DMF) and anionic surfactants such as sodium dodecyl sulfate (SDS) and sodium dodecylbenzenesulfonate (SDBS) to cooperatively optimize charge transport…
View article: Carbon Fiber-reinforced Plastic Surface Modification by Al Electroplating in AlCl<sub>3</sub>–EmImCl Ionic Liquids
Carbon Fiber-reinforced Plastic Surface Modification by Al Electroplating in AlCl<sub>3</sub>–EmImCl Ionic Liquids Open
In this study, Al electroplating and anodization were performed to improve the wear resistance of the carbon fiber-reinforced plastic (CFRP) surface. The adhesion strength between the Al electroplating film and CFRP was improved by etching…
View article: Role of anionic surfactant addition in improving thermoelectric properties of PEDOT:PSS free-standing films
Role of anionic surfactant addition in improving thermoelectric properties of PEDOT:PSS free-standing films Open
Poly(3,4-ethylenedioxythiophene):poly(styrene sulfonate) (PEDOT:PSS) has recently gained interest as a potential candidate for small-scale thermoelectric conversion because of the facile doping, solution processability, and flexibility. Ho…
View article: Properties of ((CH3NH3)1-xCsx)3Bi2I9: (x=0-1.0) Hybrid Perovskite Solar Cells with Chlorobenzene Treatment
Properties of ((CH3NH3)1-xCsx)3Bi2I9: (x=0-1.0) Hybrid Perovskite Solar Cells with Chlorobenzene Treatment Open
Hybrid-perovskite solar cells, a promising lead-free perovskite material, have been attracted for optoelectronic applications due to an excellent optical and electrical properties with low production cost. Herein, methylammonium bismuth io…
View article: Improved photovoltaic properties of ((CH<sub>3</sub>NH<sub>3</sub>)<sub>1-x</sub>Cs<sub>x</sub>)<sub>3</sub>Bi<sub>2</sub>I<sub>9</sub>: (x = 0-1.0) hybrid perovskite solar cells via a hot immersion method
Improved photovoltaic properties of ((CH<sub>3</sub>NH<sub>3</sub>)<sub>1-x</sub>Cs<sub>x</sub>)<sub>3</sub>Bi<sub>2</sub>I<sub>9</sub>: (x = 0-1.0) hybrid perovskite solar cells via a hot immersion method Open
To date, the lead-free perovskite has shown remarkable progress in solar cell development owing to its outstanding properties. Here, we report on the structural, optical, and photovoltaic properties of methylammonium bismuth iodide ((CH3NH…
View article: Influence of Anti-Solvents on the Performance of Cesium Bismuth Iodide Perovskite Solar Cells
Influence of Anti-Solvents on the Performance of Cesium Bismuth Iodide Perovskite Solar Cells Open
In this paper, the influence of anti-solvents on the properties of cesium bismuth iodide (CBI – Cs 3 Bi 2 I 9 ) perovskite solar cells (PeSCs) that were dripped with different anti-solvents, i.e., isopropanol, chlorobenzene (CB), and tolue…
View article: Enhanced surface morphology and photovoltaic properties of a new class of material copper silver bismuth iodide solar cell
Enhanced surface morphology and photovoltaic properties of a new class of material copper silver bismuth iodide solar cell Open
Newly discovered copper silver bismuth iodide films have attracted a lot of interest as a lead-free emerging material for active layers of solar cells because of their promising optical and photovoltaic properties. This study is the first …
View article: First-Principles Calculations to Investigate the Stability and Thermodynamic Properties of a Newly Exposed Lithium–Gallium–Iridium-Based Full-Heusler Compound
First-Principles Calculations to Investigate the Stability and Thermodynamic Properties of a Newly Exposed Lithium–Gallium–Iridium-Based Full-Heusler Compound Open
The structural, optical, electrical, thermodynamic, superconducting, and mechanical characteristics of LiGa2Ir full-Heusler alloys with the MnCu2Al configuration were comprehensively examined in this work using the first-principles computa…
View article: Fabrication and properties of compact (CH3NH3)3Bi2I9 perovskite solar cell by the hot immersion method
Fabrication and properties of compact (CH3NH3)3Bi2I9 perovskite solar cell by the hot immersion method Open
In this paper, the performance of the methylammonium bismuth iodide (MBI) solar cells device fabricated using the hot immersion method (HIM) is evaluated for the first time. The hot immersion time (HIT) varied between 1 h and 24 h to obtai…
View article: Effect of Methylammonium Iodide on the All-solution Prepared Methylammonium Bismuth Iodide Perovskite Solar Cells Performance
Effect of Methylammonium Iodide on the All-solution Prepared Methylammonium Bismuth Iodide Perovskite Solar Cells Performance Open
The methylammonium bismuth iodide (MBI), a promising lead (Pb)-free perovskite solar cells (PeSC’s) material, is suitable for photovoltaic applications due to less toxic and good stability. Herein, the effect of MAI (methylammonium iodide)…
View article: Effect of thickness on photovoltaic properties of amorphous carbon/fullerene junction
Effect of thickness on photovoltaic properties of amorphous carbon/fullerene junction Open
All-carbon photovoltaic devices have attracted attention in terms of resources and environment. However, the device application is very limited because of poor performance. In this work, we studied the solar cell characteristics of amorph…
View article: Annealing effects on structural and photovoltaic properties of the dip-SILAR-prepared bismuth oxyhalides (BiOI, Bi7O9I3, Bi5O7I) films
Annealing effects on structural and photovoltaic properties of the dip-SILAR-prepared bismuth oxyhalides (BiOI, Bi7O9I3, Bi5O7I) films Open
Bismuth oxyhalides are becoming a promising contender for photovoltaic applications due to its non-toxic nature and decent optical properties. This study mainly deals with clarifying the effects of phase transformations on the structure, o…
View article: Fabrication and Characterization of DSSC/Si Tandem Solar Cell with PEDOT:PSS/ITO Buffer Layer
Fabrication and Characterization of DSSC/Si Tandem Solar Cell with PEDOT:PSS/ITO Buffer Layer Open
In this study, dye-sensitized solar cell (DSSC)/silicon tandem solar cells were fabricated by changing the buffer layer structure. When joining two cells, a buffer layer is important to efficiently transport electrons by suppressing buffer…
View article: Study of Annealing Temperature Effect on the Photovoltaic Performance of BiOI-Based Materials
Study of Annealing Temperature Effect on the Photovoltaic Performance of BiOI-Based Materials Open
Bismuth oxyiodide (BiOI) is expected to be promising material for photovoltaic devices since it has good activity under the visible range. Here, we studied the annealing treatment on BiOI and its effect on the photovoltaic application. Fir…
View article: TiO2/Bi5O7I nanocomposite for photoanode of electrochemical cell
TiO2/Bi5O7I nanocomposite for photoanode of electrochemical cell Open
Bi5O7I is one of the bismuth oxyiodide (BiOI) derivate with bismuth and oxygen-rich contained which can act as semiconductor material. Here, we reported that a successful TiO2/Bi5O7I nanocomposite films fabrication could be carried out by …
View article: Effect of Sublimation Temperature on the Photovoltaic Properties of Amorphous Carbon Thin Films from Fullerene
Effect of Sublimation Temperature on the Photovoltaic Properties of Amorphous Carbon Thin Films from Fullerene Open
This paper presents the effects of sublimation temperature of C60 fullerene on the photovoltaic properties of amorphous carbon (a-C) films synthesized by remote plasma cracking. Here, we show that the deposition rate increases rapidly,Rama…
View article: Fabrication and Evaluation of Two-Junction Carbon Thin Film Photovoltaic Devices
Fabrication and Evaluation of Two-Junction Carbon Thin Film Photovoltaic Devices Open
In this work, we have fabricated the two-junction carbon photovoltaic devices which consisted of Al/fullerene (C60)/amorphous carbon (a-C)/C60/a-C/ITO glass structure. We also investigated their photovoltaic properties with the same bandga…
View article: Catalyst-Free Synthesis of Zinc Oxide Nanowires by Thermal Oxidation of Zinc Film
Catalyst-Free Synthesis of Zinc Oxide Nanowires by Thermal Oxidation of Zinc Film Open
Zinc oxide (ZnO) nanowires with high aspect ratio were successfully synthesized by annealing the Zn films in the air prepared by electron beam evaporation. The diameter and the length of nanowires are 500 - 100 nm and 5 - 10μm, respectivel…