A5048194880- Perovskite Materials and Applications
- Chalcogenide Semiconductor Thin Films
- Solid-state spectroscopy and crystallography
- Quantum Dots Synthesis And Properties
- Conducting polymers and applications
- Spacecraft Design and Technology
- Advanced Battery Technologies Research
- solar cell performance optimization
- Spacecraft and Cryogenic Technologies
- Structural Analysis and Optimization
- Photovoltaic System Optimization Techniques
- Advanced Materials and Mechanics
- Microwave Dielectric Ceramics Synthesis
- Advanced Photocatalysis Techniques
- High-Velocity Impact and Material Behavior
- ZnO doping and properties
- Energetic Materials and Combustion
- Space Satellite Systems and Control
- Thermal Expansion and Ionic Conductivity
- Technology Assessment and Management
- Advancements in Battery Materials
- Ferroelectric and Piezoelectric Materials
Japan Aerospace Exploration Agency
2022-2023
National Sagamihara Hospital
2019-2021
University of Hyogo
2015-2018
Graduate School USA
2016
Abstract Many efforts have been made towards improving perovskite (PVK) solar cell stability, but their thermal particularly at 85 °C (IEC 61646 climate chamber tests), remains a challenge. Outdoors, the installed temperature can reach up to °C, especially in desert regions, providing sufficient motivation study effect of stress or above this (e.g., 100 °C) confirm commercial viability PVK cells for industrial companies. In work, three‐layer printable HTM‐free CH 3 NH PbI with mesoporous...
Research of CH3NH3PbI3 perovskite solar cells had significant attention as the candidate new future energy. Due to toxicity, however, lead (Pb) free photon harvesting layer should be discovered replace present perovskite. In place lead, we have tried antimony (Sb) and bismuth (Bi) with organic metal monovalent cations (CH3NH3 +, Ag+ Cu+). Therefore, in this work, lead-free photo-absorber layers (CH3NH3)3Bi2I9, (CH3NH3)3Sb2I9, (CH3NH3)3SbBiI9, Ag3BiI6, Ag3BiI3(SCN)3 Cu3BiI6 were processed by...
We have prepared perovskite [CH3NH3PbI3 (MALI), CH3NH3PbBr3 (MALB), NH2CH=NH2PbI3 (FALI), and NH2CH=NH2PbBr3 (FALB)] thin films by a one-step process on glass/TiO2 glass/Al2O3 substrates studied the stability of under UV/visible light radiation up to 24 h at 1.5AM in air. After irradiation, were characterized UV–vis absorption X-ray diffraction measurements. In addition, photovoltaic performance characteristics air using different perovskites before (0 h) after irradiation. The results...
Lead halide perovskite single layers with three grain sizes are subjected to proton-beam irradiation in order assess the durability and radiation tolerance of solar cells (PSCs) against space radiation. Proton-beam is chosen because proton beams significantly affect cell performance environment. We evaluate effects by focusing on structure, crystal carrier lifetime a layer using scanning electron microscopy, X-ray diffraction, photoluminescence (PL) spectra, time-resolved PL (TRPL). The...
The CH3NH3PbI3 perovskite solar cells have been fabricated using three-porous-layered electrodes as, 〈glass/F-doped tin oxide (FTO)/dense TiO2/porous TiO2-perovskite/porous ZrO2-perovskite/porous carbon-perovskite〉 for light stability tests. Without encapsulation in air, the maintained 80% of photoenergy conversion efficiency from initial value up to 100 h under irradiation (AM 1.5, mW cm-2). Considering color variation layer, significant improvement is due moisture-blocking effect porous...
In this article, we demonstrate for the first time a mesoscopic printable perovskite solar cell (PSC) using NiO as hole transporting material and low-temperature processed carbon counter electrode. A single deposition method assisted by N2 blow drying was used of MAPbI3 on TiO2/ZrO2/NiO screen-printed As final step processing (i.e. 75 °C) layer fabricated blade coating method. It is found that capping thickness has significant effect device efficiency, especially when introduced into...
Abstract Organic‐inorganic CH 3 NH PbI ‐based perovskite solar cells have received significant research interest; however, thermal stability issue still remains. Carbon‐based triple‐porous‐layer without any hole transporting material were selected in order to investigate the internal degradation process by stresses. The sealed at 100 °C showed stable performance power conversion efficiency up 4500 h, but was accelerated after that. By analyzing aged for 7000 h °C, results of energy...
Using X-ray diffraction (XRD), it was confirmed that the deposition of hole-transporting materials (HTM) on a CH3NH3PbI3 perovskite layer changed crystal, which due to material exchanging phenomena between and HTM layers. The solvent for also crystal. In order suppress crystal change, doping by chloride ion, bromide ion 5-aminovaleric acid attempted. However, unable stabilize against deposition. It can be concluded is too soft flexible
Organo-halide perovskite solar cells (PSCs) are lightweight and low cost, they offer high power conversion efficiencies. PSCs have proven to be useful in terrestrial applications. In addition, particularly attractive for space applications because can a higher radiation tolerance than GaAs Si cells. This paper evaluates the damage coefficient minority-carrier diffusion length KL of crystals after 1 MeV electron irradiation by time-resolved photoluminescence measurements investigate reason...
Herein, we studied the effect of MgO coating thickness on performance printable perovskite solar cells (PSCs) by varying electrodeposition time Mg(OH)2 fluorine-doped tin oxide (FTO)/TiO2 electrode. Electrodeposited in electrode was confirmed energy dispersive X-ray (EDX) analysis and scanning electron microscopic (SEM) images. The PSC structures different deposition times evaluated basis their photocurrent density-voltage characteristics. overall results that insulating has an adverse...
Abstract This paper discusses the hypervelocity impacts of micrometeoroids and orbital debris (MMODs) on inverted metamorphic triple-junction (IMM3J) perovskite solar cells, which are much thinner than conventional (3J) cells. We experimentally found that IMM3J cells can suffer from short-circuit faults due to MMODs, unlike 3J determined projectile diameters velocities could cause them using a model proposed by Burt. No mode was identified in but they had open-circuit several days after...
This paper reports the development of a 10 Ah lithium-ion pouch battery cell using stainless-steel laminated film as casing material for JAXA’s SLIM lunar lander. By selecting format, mass ratio case and electrode terminals is significantly reduced, which superior to conventional space batteries prismatic metal cases. A high specific energy approximately 130 Wh/kg was achieved. In addition, unlike standard aluminum-laminated film, developed during this study deforms little when subjected...
This paper reports the development of a 10 Ah-class lithium-ion pouch battery cell for space applications using stainless steel laminated film as casing material. By selecting format, we succeeded in significantly reducing mass ratio occupied by case and electrode terminals compared to conventional batteries with prismatic metal cases, achieved high specific energy approximately 130 Wh/kg. In addition, unlike normal aluminum film, hardly deforms vacuum, thus can be mounted on spacecraft...
We plan to perform an on-orbit demonstration test of a variety state-of-the-art photovoltaic devices by using the flight module JAXA' new ISS transfer vehicle HTV-X. The mission is called SDX, and it includes InGaP/GaAs//CIGS PHOENIX triple-junction, perovskite, CIGS, micro-concentrator #503 InGaP/GaAs/Ge triple-junction solar cells. for SDX have suffered environmental tests UV, proton/electron irradiation, thermal cycle, vibration. device exposure board measurement unit are now under...