Tetsuo Soga
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View article: Microwave plasma-enhanced chemical vapor deposition growth of graphene nanowalls on varied substrates: A comparative study
Microwave plasma-enhanced chemical vapor deposition growth of graphene nanowalls on varied substrates: A comparative study Open
We explored the growth rate and morphological characteristics of graphene nanowalls (GNWs) on copper (Cu), stainless steel (SUS), quartz and silicon (Si) substrates by changing the growth time using microwave plasma-enhanced chemical vapor…
View article: Effectiveness of Porous Durian Shell-based Activated Carbon for Methylene Blue Adsorption
Effectiveness of Porous Durian Shell-based Activated Carbon for Methylene Blue Adsorption Open
In this study, durian shell-based activated carbon (DAC) was produced via chemical activation method by utilising durian shell and sulphuric acid (H2SO4) as the starting material and activating agent, respectively. The incorporation of H2S…
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: Fabrication and Properties of Bi2S3 Nanowire Thin Film Solar Cells by Spin Coating with Varying Sulfur Concentrations in the Precursor
Fabrication and Properties of Bi2S3 Nanowire Thin Film Solar Cells by Spin Coating with Varying Sulfur Concentrations in the Precursor Open
We conducted a simple solution-based method to fabricate Bi 2 S 3 nanowire thin film solar cells by spin coating with varying sulfur-to-bismuth ratios. Spherical nanoparticles were observed in the thin film with low-concentration sulfur so…
View article: Effect of Low to High Pressure on the Structural, Mechanical, Electrical, and Optical Properties of Inorganic Material Ca<sub>3</sub>AsBr<sub>3</sub>: An Ab Initio Investigation
Effect of Low to High Pressure on the Structural, Mechanical, Electrical, and Optical Properties of Inorganic Material Ca<sub>3</sub>AsBr<sub>3</sub>: An Ab Initio Investigation Open
Inorganic metal halide solar cells made from perovskite stand out for having outstanding efficiency, cheap cost, and simple production processes and recently have generated attention as a potential rival in photovoltaic technology. Particu…
View article: Enhancing in-plane uniformity of graphene nanowalls using a rotating platform for solid-state lithium-ion battery
Enhancing in-plane uniformity of graphene nanowalls using a rotating platform for solid-state lithium-ion battery Open
In the realm of solid-state lithium-ion battery (SLIB) research, anode development remains a focal area because the interface between the solid electrolyte and the anode plays a critical role in determining battery performance. Among vario…
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: Recent Progress on Functionalized Graphene Quantum Dots and Their Nanocomposites for Enhanced Gas Sensing Applications
Recent Progress on Functionalized Graphene Quantum Dots and Their Nanocomposites for Enhanced Gas Sensing Applications Open
Gas-sensing technology has witnessed significant advancements that have been driven by the emergence of graphene quantum dots (GQDs) and their tailored nanocomposites. This comprehensive review surveys the recent progress made in the const…
View article: Effect of doping on the structural properties of ZnO nanowires synthesised by ultrasonic-assisted immersion technique
Effect of doping on the structural properties of ZnO nanowires synthesised by ultrasonic-assisted immersion technique Open
Various procedures for producing high-quality zinc oxide (ZnO) nanowires (ZnO NWs) have been developed. Nevertheless, most of it rely on harsh circumstances such as high temperature, high pressure, costly materials, and complicated procedu…
View article: Analysis of charge transport resistance of ZnO-based DSSCs because of the effect of different compression temperatures
Analysis of charge transport resistance of ZnO-based DSSCs because of the effect of different compression temperatures Open
This article represents a research study about the effect of compression temperature on the performance of Zinc Oxide (ZnO)-based dye-sensitized solar cell (DSSC). To find the optimum compression temperature, the electrodeposited photoanod…
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: Evaluation of Photocatalytic Activity and Electrochemical Properties of Hematite Nanoparticles
Evaluation of Photocatalytic Activity and Electrochemical Properties of Hematite Nanoparticles Open
The symmetric nano morphologies, asymmetric electronic structures, and as well as the heterojunctions of the developed photocatalytic systems perform a vital role in promoting light absorption, separation of electron and hole pairs and cha…
View article: A novel self-separating silicon nanowire thin film and application in lithium-ion batteries
A novel self-separating silicon nanowire thin film and application in lithium-ion batteries Open
Nano silicon structures are important materials for modern electronic devices and have been widely researched with regard to photoelectricity, thermoelectricity, and lithium-ion batteries. However, since the nano silicon structures fabrica…
View article: Study on the Etching Characteristics and Thermal Conductivity of Porous Silicon Nanowire Arrays Using Highly Doped Silicon
Study on the Etching Characteristics and Thermal Conductivity of Porous Silicon Nanowire Arrays Using Highly Doped Silicon Open
Silicon nanowires (SiNWs) fabricated by metal-assisted chemical etching (MACE) of highly doped silicon are promising thermoelectric materials because of their high conductivity and porosity. However, it is difficult to fabricate long SiNWs…
View article: Etching rate of silicon nanowires with highly doped silicon during metal-assisted chemical etching
Etching rate of silicon nanowires with highly doped silicon during metal-assisted chemical etching Open
The fabrication of silicon nanowires (SiNWs) by metal-assisted chemical etching (MACE) has been widely studied in a variety of fields. SiNWs by high-doped silicon are potential materials to be applied in thermoelectric, lithium-ion batteri…
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: Functionalized graphene-based nanocomposites for smart optoelectronic applications
Functionalized graphene-based nanocomposites for smart optoelectronic applications Open
The recent increase in the use of graphene and its derivatives is due to their exceptional physicochemical, electrical, mechanical, and thermal properties as the industrial materials developed by involving graphene structures can fulfill f…
View article: The Synthesized Reduced Graphene Oxide Enhanced the Capacitive Behavior of Activated Carbon/PVA as Potential Electrode Materials
The Synthesized Reduced Graphene Oxide Enhanced the Capacitive Behavior of Activated Carbon/PVA as Potential Electrode Materials Open
In this work, activated carbon (AC) derived from biomass wastes was implemented as electrode materials in supercapacitor application. This study has adopted rubber seed shell (RSS) wastes to derive AC via pyrolysis process. Meanwhile, redu…
View article: The Potential of Pandanus amaryllifolius Leaves Extract in Fabrication of Dense and Uniform ZnO Microrods
The Potential of Pandanus amaryllifolius Leaves Extract in Fabrication of Dense and Uniform ZnO Microrods Open
Zinc oxide (ZnO) micro and nanorods were successfully prepared using Pandanus amaryllifolius and hexamethylenetetramine (HMTA) separately as stabilizers using the solution immersion method. Two types of ZnO seed layer were prepared using t…
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…