A5075603253- Perovskite Materials and Applications
- Conducting polymers and applications
- Chalcogenide Semiconductor Thin Films
- Graphene research and applications
- Quantum Dots Synthesis And Properties
- Organic Light-Emitting Diodes Research
- Diamond and Carbon-based Materials Research
- Fiber-reinforced polymer composites
- Solid-state spectroscopy and crystallography
- Organic Electronics and Photovoltaics
- Silicon and Solar Cell Technologies
- solar cell performance optimization
- Silicon Nanostructures and Photoluminescence
- Thin-Film Transistor Technologies
- Inorganic Fluorides and Related Compounds
- Semiconductor materials and devices
- Carbon Nanotubes in Composites
- Thermal and Kinetic Analysis
- Nanomaterials and Printing Technologies
- Radioactive contamination and transfer
- Material Properties and Applications
- Solar Radiation and Photovoltaics
- Radioactive element chemistry and processing
- Surfactants and Colloidal Systems
- Nuclear reactor physics and engineering
Panasonic (Japan)
2014-2023
The University of Tokyo
2011-2018
École Polytechnique Fédérale de Lausanne
2016-2017
Interface (United States)
2016
Charles Humbert 8
2016
Division of Materials Research
2015-2016
National Institute for Materials Science
2015
Kyoto University
1988-2007
KRI
1998-1999
Kyoto Research Park
1998-1999
Today's best perovskite solar cells use a mixture of formamidinium and methylammonium as the monovalent cations. With addition inorganic cesium, resulting triple cation compositions are thermally more stable, contain less phase impurities sensitive to processing conditions. This enables reproducible device performances reach stabilized power output 21.1% ∼18% after 250 hours under operational These properties key for industrialization photovoltaics.
Improving the stability of perovskite solar cells Inorganic-organic have poor long-term because ultraviolet light and humidity degrade these materials. Bella et al. show that coating with a water-proof fluorinated polymer contains pigments to absorb re-emit it in visible range can boost cell efficiency limit photodegradation. The performance inorganic-organic are also limited by size cations required for forming correct lattice. Saliba rubidium cation, which is too small form itself, lattice...
Planar perovskite solar cells exhibit a conduction band misalignment of the with TiO<sub>2</sub>, but not SnO<sub>2</sub>. The system using latter yielded power conversion efficiencies over 18%.
Abstract Perovskite solar cells are one of the most promising photovoltaic technologies with their extraordinary progress in efficiency and simple processes required to produce them. However, frequent presence a pronounced hysteresis current voltage characteristic these devices arises concerns on intrinsic stability organo-metal halides, challenging reliability technology itself. Here, we show that n-doping mesoporous TiO 2 is accomplished by facile post treatment films lithium salts. We...
Low temperature planar PSCs are fabricated by SnO<sub>2</sub> yielding stable devices and efficiencies <italic>ca.</italic> 21%.
Perovskite cells benefit from a good night's sleep.
Hybrid organic-inorganic perovskite materials have risen up as leading components for light-harvesting applications. However, to date many questions are still open concerning the operation of solar cells (PSCs). A systematic analysis interplay among structural features, optoelectronic performance, and ionic movement behavior FA0.83 MA0.17 Pb(I0.83 Br0.17 )3 PSCs is presented, which yield high power conversion efficiencies 20.8%.
Ionic liquids can retard the perovskite crystallization with aim to form compact films larger and more uniformly distributed grain size. The ionic liquid driven is exploited prepared a record planar solar cell stabilized power output of 19.5%. As service our authors readers, this journal provides supporting information supplied by authors. Such materials are peer reviewed may be re-organized for online delivery, but not copy-edited or typeset. Technical support issues arising from (other...
Perovskite solar cells have received great attention because of their rapid progress in efficiency, with a present certified highest efficiency 23.3%. Achieving both high and thermal stability is one the biggest challenges currently limiting perovskite devices displaying at temperature frequently suffer from marked decrease efficiency. In this report, relationship between composition device examined. It revealed that Rb can suppress growth PbI2 even under -rich conditions decreasing Br ratio...
Novel hole transporting materials enabled to prepare stable perovskite solar cells.
Small-molecule fluorene HTMs were synthesized and tested in perovskite solar cell, PCE of up to 19.96% was reached.
A room-temperature perovskite material yielding a power conversion efficiency of 18.1% (stabilized at 17.7%) is demonstrated by judicious selection cations. Both cesium and methylammonium are necessary for formamidinium-based to obtain the photoactive crystalline phase high-quality crystals. This room-temperature-made shows great potential low-cost, large-scale manufacturing such as roll-to-roll processing.
A low-cost carbon cloth is applied in perovskite solar cells (PSC) as a collector composite and degradation inhibitor. This study incorporates fibers back contact cells, which results enhancement all photovoltaic parameters. material suitable for large-scale fabrication of PSCs it has shown an improved long-term stability when compared to the gold counterpart under elevated temperatures. As service our authors readers, this journal provides supporting information supplied by authors. Such...
Abstract Triarylamine‐based polymers with different functional groups were synthetized as hole‐transport materials (HTMs) for perovskite solar cells (PSCs). The novel enabled efficient PSCs without the use of chemical doping (or additives) to enhance charge transport. Devices employing poly(triarylamine) methylphenylethenyl (V873) showed a power conversion efficiency 12.3 %, whereas widely used additive‐free poly[bis(4‐phenyl)(2,4,6‐trimethylphenyl)amine] (PTAA) demonstrated 10.8 %. Notably,...
Organic-inorganic lead halide perovskites are promising materials for realization of low-cost and high-efficiency solar cells. Because the toxicity lead, Sn-based perovskite have been developed as alternatives to enable fabrication Pb-free However, cell performance cells (Sn-PSCs) remains poor because their large open-circuit voltage (VOC) loss. lower electron affinities than Pb-based materials, which result in larger conduction band offset (CBO) values at interface between a conventional...
Organic–inorganic halide perovskites (OIHPs) have been intensively studied in recent years for use solar cells. Many studies reported the light-induced phenomena of OIHP materials and their In this study, we investigated influence a hole-transport layer (HTL) on degradation (LID) mixed cells, especially at OIHP/HTL interface, by hard X-ray photoelectron spectroscopy (HAXPES) impedance spectroscopy. HAXPES shows accumulation iodine metallic lead vicinity electron-transport layer/OIHP...
High photovoltaic performance and light stability are required for the practical outdoor use of lead-halide perovskite solar cells. To improve cells, it is effective to introduce a self-assembled monolayer (SAM) between carrier transport layer layer. Several alternative approaches in their molecular design combination with multiple SAMs support high conversion efficiency (PCE). Herein, we report new structure improving both PCE stability, which surface an electron (ETL) was modified by...
Thermal stability of perovskite solar cells is crucial for their practical use. In this report, we show good 74% retention after a thermal stress test at 85 °C 350 h) with high efficiency (>18%) using Rb modified absorber layers. It posited that the mechanism improvement due to formation RbPbl3 which suppresses Pbl2 growth. This facile way improving promising realizing and stability.
Sn-based perovskite solar cells have attracted much attention as the lead-free next generation of cells. However, their efficiency is still low (∼12%). One reason that carrier diffusion length perovskites shorter than Pb-based perovskites. In this study, we investigated effects electron transport layer (ETL) structure, using a porous niobium oxide (Nb2O5) ETL to create highly efficient cell. We quantified structure on extraction by time-resolved microwave conductivity (TRMC) measurements....
Well-ordered graphite thin films were obtained by chemical vapor deposition of 2-methyl- 1,2′-naphthyl ketone on Ni substrates at substrate temperatures higher than 600 °C. Values interlayer spacing calculated from x-ray diffraction data between 3.360 and 3.350 Å. Raman scattering spectra the showed a peak centering 1580 cm−1.
Lead halide perovskite is a candidate for next-generation solar cells. Improvements in photovoltaic conversion efficiency and cell durability different environments, such as moisture, heat, light, are pertinent practical use. Researchers must solve the problem of light-induced degradation (LID) Oxygen accelerates LID. However, buffer layer between electron transport (ETL)/perovskite interface suppresses Herein, we report influence oxygen on LID at [(FA0.83MA0.17)0.95Cs0.05(I0.95Br0.05)3 with...
Organic–inorganic hybrid materials (OIHMs), such as methylammonium lead triiodide (MAPbI3), have a wide composition space because of the various potential combinations organic molecules and inorganic cages. However, for unknown OHIMs, it is difficult to predict what kind crystal structure will be stable without any experimental data. In this work, we report an efficient scheme predicting structures phase diagrams MA–Pb–I systems from first-principles calculations genetic algorithms. our...
Abstract A strong expectation exists for a two‐terminal hybrid perovskite/silicon tandem solar cell generating substantially higher output power. Nevertheless, high efficiency under the standard condition does not guarantee power generation in outdoor environment due to requirement of current matching device. Here, we predict global energy yields perovskite/Si and Si heterojunction single modules by establishing new rigorous self‐consistent model that performs full device simulations...