A5055297202- Perovskite Materials and Applications
- Conducting polymers and applications
- Chalcogenide Semiconductor Thin Films
- Quantum Dots Synthesis And Properties
- Solid-state spectroscopy and crystallography
- Organic Electronics and Photovoltaics
- Asthma and respiratory diseases
- Allergic Rhinitis and Sensitization
- Dermatology and Skin Diseases
- Glaucoma and retinal disorders
- Fuel Cells and Related Materials
- Boron and Carbon Nanomaterials Research
- Fullerene Chemistry and Applications
- Metal and Thin Film Mechanics
- Food Allergy and Anaphylaxis Research
- Electrospun Nanofibers in Biomedical Applications
- Thermal Expansion and Ionic Conductivity
- Flavonoids in Medical Research
- Graphene research and applications
- Thermal properties of materials
- Redox biology and oxidative stress
- solar cell performance optimization
- 2D Materials and Applications
- Surface Roughness and Optical Measurements
- Connexins and lens biology
National Institute of Advanced Industrial Science and Technology
2010-2025
Kyushu Institute of Technology
2021
Mie University
2019
Kanazawa University
2015-2017
Graduate School USA
2014
Nagasaki University
2014
University of Tsukuba
2011
Kobe City Medical Center General Hospital
2005
Osaka University
2003
Teikyo University
2003
Cells, growth factors, and scaffolds are the three main factors required to create a tissue-engineered construct. After appearance of bovine spongiform encephalopathy (BSE), considerable attention has therefore been focused on nonbovine materials. In this study, we examined properties chitosan porous scaffold. A sponge was prepared by controlled freezing lyophilization different concentrations solutions. The materials were scanning electron microscopy, porosity, tensile strength, basic...
The SEM images of organolead halide perovskite nanoparticles (NPs) without (w/o) and with (w) the use ionic liquid (IL).
Cesium iodide (CsI) is attracting attention as a substitute for organic materials such CH3NH3I. In this work, we fabricated sequential-vacuum-deposited planar heterojunction (PHJ) cesium lead (CsPbI3) perovskite solar cells with enhanced efficiencies by varying the annealing time (0.5, 1, 5, and 10 min). The effect of performance enhancement was investigated function at 350 °C employing hot plate. best-performing device obtained an 1 min, delivered photocurrent density (JSC) 12.06 mA/cm2,...
Perovskite solar cells often exhibit performance variability even under identical experimental conditions. One of the reasons this inconsistency is attributed to manual interventions such as application antisolvents. To address these challenges, we develop an automated system precisely control solvent dropping and substrate heating processes. Spin coating performed by using comprising a robot arm, spin coater, automatic solution part, hot plate, storage area. Manual fabrication conducted...
Perovskite solar cells (PSCs) have developed rapidly in the last decade, primarily because of improvements their photovoltaic (PV) performance. However, methods characterization and analyses for PSCs remain immature, mostly complex multilayered PSC structure. The sandwiched structure i-type perovskite photoabsorbers having both p-type hole transport materials (HTMs) n-type electron (ETMs) facilitates charge separation photoabsorber thus plays a crucial role developing efficient PSCs. this...
Perovskite solar cells (PSCs) have developed rapidly in the last decade, primarily because of improvements their photovoltaic (PV) performance. However, methods characterization and analysis for PSCs remain immature,...
Abstract We fabricated planar heterojunction (PHJ) solar cells with enhanced efficiencies by introducing fullerene (C60) interlayers of thicknesses 0, 3, 7, and 10 nm between the air-stable amorphous compact titanium oxide (TiOx) CH3NH3PbI3 layers. The modified morphology obtained inclusion C60 improved surface energy properties in terms photocurrent. optimum thickness interlayer was 7 nm, for which a maximum power conversion efficiency 9.51% obtained.
Herein, we report an efficient approach to control the crystalline polymorph of evaporated α-sexithiophene (6T) thin films by keeping them overnight (12 h) under vacuum. Further, investigated effects on performance organic photovoltaic devices controlling 6T via this vacuum technique so that take low-temperature (LT) (in which backbones molecules lie flatter substrate—the so-called "lying-down" orientation). Our results revealed when layer was deposited directly onto a copper(I) iodide...
Abstract Organic–inorganic hybrid perovskite materials have recently emerged as a promising cost- and energy-efficient light absorber material for photovoltaic applications. Unfortunately, solar cells problem with decreasing power conversion efficiency owing to their degradation in air. To clarify the cause of cells, we exposed deposited CH 3 NH PbI HC(NH 2 ) films an O or (H O+N atmosphere condition. Analysis these revealed that large energy band gap was observed result influence H molecule...
Abstract Hybrid organic/inorganic perovskites such as methylammonium lead iodide (CH 3 NH PbI ) are potential candidates for thin-film photovoltaics because of their excellent cost- and energy-efficient light absorption. In this work, we have prepared CH nanoparticles (NPs) on the TiO x /ITO glass substrates by a simple spin-coating method to control size shape NPs. The effect varying weight percentage (wt %) ionic liquid (IL) has also been investigated. Analysis films revealed spherical NP...
Abstract Spin-coated perovskite solar cells from sol–gels result in high processing costs because of the need for temperatures. Here, we report a low-temperature spin-coating route to fabricate planar heterojunction using chemical bath deposition compact-TiO x layers. Comparison cell properties and 2 layers show that power conversion efficiency fabricated by low-temperature, is comparable conventional TiO . The method requires heating 150 °C only form amorphous films compared with 450...
Abstract Although the all-inorganic perovskite CsPbI 3 exhibits superior thermal- and photo-stability compared with organic–inorganic perovskites, formation of photoactive α -phase requires sintering at approximately 320 °C. Herein, we report partial substitution Ge 2+ ions for Pb as a means tuning stability material enabling 90
The process dynamics for the vacuum deposition of methylammonium lead iodide (MAPbI3) perovskite was analyzed by in situ X-ray diffraction using synchrotron radiation. MAPbI3 fabricated alternatingly supplying PbI2 and via a laser system installed at beamline BL46XU SPring-8, crystallization analysis conducted. Microscopic insights into were obtained, including observation Laue oscillation during growth octahedral unit (PbI6) rotation transformation perovskite. On basis this analysis,...
Perovskite (CH<sub>3</sub>NH<sub>3</sub>PbI<sub>3</sub>) solar cell (PSC) have been recently emerged as a promising cost and energy efficient light absorber material for photovoltaic applications. In this paper, we fabricated planar heterojunction (PHJ) perovskite cells using chemical bath deposited low temperature titanium oxide (TiO<sub>x</sub>) compact layer an electron collection layer. The devices modified by fullerene (C<sub>60</sub>) with the thickness of 7nm show very significant...