A5101467081- Perovskite Materials and Applications
- Conducting polymers and applications
- Crystallization and Solubility Studies
- X-ray Diffraction in Crystallography
- Chalcogenide Semiconductor Thin Films
- Fluid Dynamics and Heat Transfer
- Fluid Dynamics and Thin Films
- Organic Electronics and Photovoltaics
- Phase Equilibria and Thermodynamics
- Quantum Dots Synthesis And Properties
- Heat Transfer and Boiling Studies
- Gas Dynamics and Kinetic Theory
- Semiconductor Lasers and Optical Devices
- Organic and Molecular Conductors Research
- Fluid Dynamics and Mixing
- nanoparticles nucleation surface interactions
- 2D Materials and Applications
- Evacuation and Crowd Dynamics
- Luminescence and Fluorescent Materials
- Simulation and Modeling Applications
- Combustion and flame dynamics
- Subcritical and Supercritical Water Processes
- Silicon and Solar Cell Technologies
- Innovative Microfluidic and Catalytic Techniques Innovation
- Coagulation and Flocculation Studies
Dalian National Laboratory for Clean Energy
2024
Dalian Institute of Chemical Physics
2024
Chinese Academy of Sciences
2024
Kyoto University
2017-2020
Kyoto University Institute for Chemical Research
2017-2020
KTH Royal Institute of Technology
2014-2020
Kyoto Bunkyo University
2017-2019
University of Oxford
2015-2016
A significant fraction of global electricity demand is for lighting. Enabled by the realization and development efficient GaN blue light-emitting diodes (LEDs), phosphor-based solid-state white LEDs provide a much higher efficiency alternative to incandescent fluorescent lighting, which are being broadly implemented. However, key challenge this industry achieve right photometric ranges application-specific emission spectra via cost-effective means. Here, we synthesize organic–inorganic lead...
Abstract The toxicity of lead perovskite hampers the commercialization perovskite-based photovoltaics. While tin is a promising alternative, facile oxidation tin(II) to tin(IV) causes high density defects, resulting in lower solar cell efficiencies. Here, we show that tin(0) nanoparticles precursor solution can scavenge impurities, and demonstrate this treatment leads effectively tin(IV)-free films with strong photoluminescence prolonged decay lifetimes. These are generated by selective...
Two simple methods to improve tin halide perovskite film structure are introduced, aimed at increasing the power conversion efficiency of lead free solar cells. First, a hot antisolvent treatment (HAT) was found increase coverage and prevent electrical shunting in photovoltaic device. Second, it discovered that annealing under low partial pressure dimethyl sulfoxide vapor increased average crystallite size. The topographical qualities films substantively improved as result combined...
Metal halide perovskites have emerged as one of the most promising materials for photovoltaics (PVs), with power conversion efficiency over 22% already demonstrated. In order to compete traditional crystalline silicon PV, cost and stability are equally important issues that need be considered besides efficiency. Copper thiocyanate (CuSCN) is an interesting candidate used inexpensive, thermally stable p‐type charge conducting material in perovskite solar cells. Here, we report 13% efficient...
Organic-inorganic halide perovskite solar cells have recently emerged as high-performance photovoltaic devices with low cost, promising for affordable large-scale energy production, laboratory already exceeding 20% power conversion efficiency (PCE). To date, a relatively expensive organic hole-conducting molecule conductivity, namely spiro-OMeTAD (2,2',7,7'-tetrakis(N,N-di-p-methoxyphenyl-amine) 9,9'- spirobifluorene), is employed widely to achieve highly efficient cells. Here, we report...
A series of solvent-coordinated tin halide complexes were prepared as impurity-free precursors for perovskites, and their structures determined by single-crystal X-ray diffraction analysis. Using these precursors, the MASnI3 FASnI3, prepared, electronic photophysical properties examined under inert conditions means photoelectron yield spectroscopy well absorption fluorescence spectroscopies. Their valence bands (MASnI3: -5.02 eV; FASnI3: -5.16 eV) are significantly higher than those MAPbI3...
Abstract Perovskite solar cells (PSCs) have attracted intensive attention as the most promising next‐generation photovoltaic technology because they both enable accelerated development of performance and are compatible with low‐cost fabrication methods. The strategy interface engineering perovskite layer in PSCs is expected to result further enhancement power conversion efficiency (PCE) via minimizing charge recombination loss. Here, a high current–voltage (stabilized output) PCE 20.4%...
Mixed composition metal–halide perovskites were developed to improve the performance of perovskite solar cell devices incorporating tin(<sc>iv</sc>) oxide substrates for electron transport layers by optimizing I/Br halide ion ratio.
While (111)-dominated perovskite films hold the potential for high-stability solar cells, most studies have primarily focused on modulating (111) facets, overlooking distribution and formation mechanism of nondominant (100) facets. In this study, we delve into orientation via solvent regulation investigate evolution facet using various diffraction techniques. The findings reveal that simply stacking facets does not inherently enhance cells. Instead, in significantly influences both...
For phase-change cooling schemes for electronics, quick activation of nucleate boiling helps safeguard the electronics components from thermal shocks associated with undesired surface superheating at incipience, which is great importance to long-term system stability and reliability. Previous experimental studies show that bubble nucleation can occur surprisingly early on mixed-wettability surfaces. In this paper, we report unambiguous evidence such unusual generation extremely low...
Abstract Two simple methods to improve tin halide perovskite film structure are introduced, aimed at increasing the power conversion efficiency of lead free solar cells. First, a hot antisolvent treatment (HAT) was found increase coverage and prevent electrical shunting in photovoltaic device. Second, it discovered that annealing under low partial pressure dimethyl sulfoxide vapor increased average crystallite size. The topographical qualities films substantively improved as result combined...
Since the first reports of efficient organic-inorganic perovskite solar cells in 2012, an explosion research activity has emerged around world, which led to a rise power conversion efficiencies (PCEs) over 20%. Despite impressive efficiency, key area device remains suboptimal is electron extraction layer and its interface with photoactive perovskite. Here, we implement collection "bilayer" composed thin zirconia coated titania, sitting upon transparent conductive oxide fluorine-doped tin...
With a rapid progress in photovoltaic performance over the past several years, organic–inorganic perovskite solar cells (PSCs) have been regarded as promising candidate for next-generation devices such lightweight and flexible equipment portable systems. However, its durability during mechanical bending test of PSCs (fPSCs) are insufficient realistic application. This inadequacy stems from lack superior electron transport material (ETM) fPSCs. Here, we describe application SnO2 an ETM fPSCs...
Hybrid organic-inorganic perovskite solar cells (PSCs) have been regarded as the most promising next-generation photovoltaics (PVs) because of their potential for low-cost fabrication and advances in development. Superior quality photoactive layer is a main factor further increasing PV performance (PSCs). Herein, we successfully obtained with high crystallinity large grain size by utilizing excess PbI2 SSGP technique demonstrated superior normal-architecture planar PSCs. The PSCs highest...
Multicomponent, multiphase, compressible flows are very important in real life, as well scientific research, while their modeling is an early stage. In this paper, we propose a diffuse interface model for binary mixtures, based on the balance of mass, momentum, energy, and second law thermodynamics. We show both analytically numerically that able to describe phase equilibrium mixture (CO_{2} + ethanol considered paper) by adjusting parameter which measures attraction force between molecules...
Axisymmetric rapid expansion of supercritical carbon dioxide is investigated in this article. The extended generalized Bender equation state used to give a good description the fluids over wide range pressure and temperature conditions. locations Mach disks are analyzed compared with an experimental correlation for case where there no plate positioned front nozzle exit. It found that disagreement between our numerical results formula very small when ratio small, increases as increases. also...
We numerically study the thermohydrodynamics of boiling for a CO(2) + ethanol mixture on lyophilic and lyophobic surfaces in both closed open systems, based diffuse interface model two-component system. The corresponding wetting boundary conditions an isothermal system are proposed verified this paper. New phenomena due to addition another component, mainly preferential evaporation more volatile observed. In system, physical process shows very different characteristics. except movement...
Capitalizing on the full potential of latent heat vaporization, boiling is among most efficient transfer schemes. Further enhancement relies precise control bubble dynamics, which can be realized a surface endowed with heterogeneous wettabilities. However, such ordered behavior could fail when triple-phase contact line gets dislodged from hydrophilic-hydrophobic border by accelerated expansion. Here, numerical study critical condition for transition between pinned- and depinned-contact-line...
Organic-inorganic halide perovskite solar cells have recently emerged as high performance photovoltaic devices with low cost, promising for affordable large-scale energy production. The power conversion efficiency (PCE) from to electricity in solid state has risen 10% over 20% within two years of development. To date, a relatively expensive organic hole-conducting molecule conductivity, namely Spiro-OMeTAD (2,2′,7,7′-tetrakis (N,N-di-p-methoxyphenyl-amine) 9,9′- Spirobifluorene), is employed...