Articles tagged with Perovskites
Researchers at Linköping University have developed high-quality lead-free double perovskite films with long electron-hole diffusion length, a necessary property for efficient solar cells. The power conversion efficiency of these solar cells is still low, but the team has taken a major step towards increasing efficiency in the near future.
Researchers relax perovskite crystal to reduce strain and improve power conversion efficiency, achieving 20.5% efficiency with negligible degradation over 1,500 hours of operation.
A joint research program aims to create a stable network of researchers working on perovskite semiconductors. The material has shown potential as a highly efficient and processable solar cell technology, with the goal of improving its defect tolerance.
Researchers have designed molecular perovskite-based energetic materials with improved explosive performances, including high detonation heat, velocity, and pressure. The new materials also exhibit increased thermal stability and low impact sensitivity, making them suitable for military devices and civil industry.
Researchers at the University of Cambridge have discovered a simple potassium solution that can boost the efficiency of next-generation solar cells by up to 21.5%. The addition of potassium iodide 'heals' defects and immobilises ion movement, making the material more stable and efficient at converting sunlight into electricity.
Researchers have discovered a diamond containing the fourth most abundant mineral in Earth, calcuim silicate perovskite, at the surface. This finding suggests that oceanic crust is recycled into the lower mantle, with potential implications for our understanding of Earth's core.
A new approach to making highly-efficient solar cells has been developed using a novel perovskite material. The researchers achieved a power conversion efficiency of 19.10% and demonstrated air-stability in their device, which could lead to more efficient solar energy applications.
A research group from ITMO University combined a nanoantenna with a light source in a single nanoparticle, generating, enhancing and routing emission. The scientists discovered that the emission can be enhanced if its spectra match with Mie-resonant mode, making them efficient light sources at room temperature.
Researchers at Brown University have developed a new titanium-based material for making lead-free, inorganic perovskite solar cells. The material has favorable properties for solar applications and can be tuned to improve efficiency.
Researchers at Aalto University found major deficiencies in ageing tests of perovskite and dye-sensitized solar cells. Most tests lacked common standards, were performed in dark conditions, or reported insufficient data.
Researchers developed a new molecule, EH44, to replace the unstable spiro-OMeTAD layer in perovskite solar cells. The new design resolves chemical makeup issues and maintains steady efficiency, bringing emerging technology closer to commercial deployment.
Researchers at EPFL have developed a systematic understanding of sequential deposition reaction for metal halide perovskite formation. The study used X-ray diffraction analysis, scanning electron microscopy, and cross-sectional photo-luminescence mapping to investigate the crystallization of lead iodide and perovskite film formation.
Researchers at Berkeley Lab have developed a thermochromic material that works as both transparent and non-transparent, producing electricity when darkened. The material's reversible phase transition enables it to switch between these states without degrading its electronic properties.
Researchers have discovered that mesoporous perovskite solar cells exhibit better output stability than their planar counterparts due to the large surface area of the interface. The mesoporous structure dilutes defects, leading to a more stable power output and increased resilience to defect accumulation.
KAIST researchers have developed a new technique to improve the chemical stability of electrode materials in solid oxide fuel cells. By employing a small amount of metals, they can extend the lifespan of these energy technology devices. This innovation has the potential to improve the long-term performance and durability of fuel cells.
Researchers have discovered a new material that slows down the decay of hot electrons in solar cells, allowing for more energy to be harvested. This could lead to a significant increase in solar cell efficiency, from 33% to 66%, and make a major contribution to providing clean and sustainable energy.
Researchers at Helmholtz-Zentrum Berlin discover why perovskite solar cells function despite numerous holes. The thin layer built up in the film prevents short circuits by recombination barrier and electron transport layer separation.
Researchers developed a new gas-solid reaction method to fabricate high-quality perovskite films, achieving faster response times and improved stability in photodetectors. The non-solvent approach provides full coverage of the film and eliminates damage from organic solvents.
Researchers at Duke University have developed a method to create hybrid thin-film materials that can absorb and emit light efficiently. The technique, called Resonant Infrared Matrix-Assisted Pulsed Laser Evaporation, allows for the creation of delicate organic-inorganic crystals with improved scalability and durability.
Researchers propose a standardized measurement method for perovskite solar cell stability, addressing the lack of comparable data across laboratories and companies. The study investigates environmental factors affecting perovskite degradation, revealing specific behaviors that distort experimental results.
Distinguished Professor Sang Il Seok at UNIST received the 2017 Korea Scientists Award for his outstanding contributions to energy sector through manufacturing high-efficient halide perovskite solar cells. His research has been recognized worldwide and cited over 5,000 times in prestigious scientific journals.
Scientists at EPFL Valais Wallis discovered that guanidinium can improve perovskite stability, delivering an average power conversion efficiency of 19.2% and stabilizing performance for 1000 hours under continuous light illumination. This breakthrough could lead to the development of more efficient and stable perovskite solar cells.
Researchers at The University of Tokyo's Institute of Industrial Science have developed a semi-transparent solar cell that absorbs red and blue light while letting green through. The new material, based on perovskite, is able to retain an impressive power conversion efficiency of around 10% despite being made much thinner.
A team of researchers has demonstrated a simple approach for coupling solution-synthesized cesium lead tribromide (CsPbBr3) perovskite nanocrystals to silicon nitride photonic cavities, enhancing room temperature light emission by an order of magnitude.
A team of researchers has discovered that ions in hybrid perovskite crystals migrate and create regions with reduced efficiency, degrading the material's performance. Limiting this ion migration could lead to improved high-efficiency solar cells with low costs.
Scientists have successfully created the first continuous-wave lasing in an organic-inorganic lead halide perovskite semiconductor, which could be a crucial step towards developing electrically driven devices. By adjusting the material's temperature, they avoided a phenomenon known as lasing death and achieved over an hour of lasing.
Researchers have developed a stacked color sensor using perovskites, which improves colour recognition and light sensitivity. This allows for more accurate image capture and enables the creation of smaller pixel sizes, potentially leading to higher spatial resolution in various analysis technologies.
Researchers have developed a method to produce high-quality perovskite photovoltaics using mechanochemistry, resulting in improved efficiency and reduced structural defects. The production process involves grinding powders to create homogeneous perovskites with fewer defects, which improves the cell's performance.
University of Utah researchers create a new component for ultra-high-speed communications and computing using perovskite, a mineral discovered in Russia. The technology uses the terahertz spectrum to transmit data a thousand times faster than current systems.
Inorganic-organic halide perovskites have distinctive advantages for high efficiency solar cells, with recent breakthroughs in developing efficient hole transport material free PSCs. Significant ion transport has been found to redistribute doping and defects, affecting photoelectric behavior and stability.
Researchers at Osaka University have developed a new method to model the structure of perovskite oxide interfaces using a Bayesian probability-based computer program. This approach provides fast and accurate results, allowing for easier analysis of complex structural data.
Researchers at UNIST have developed highly stable perovskite solar cells using fluorine-functionalized graphene nano-platelets, overcoming the material's notorious instability. This breakthrough could lead to next-generation solar cells with high efficiencies and low costs.
Scientists discovered that treating a complex oxide crystal with heat or chemicals creates catalysts with dissimilar behaviors, leading to distinct products. The findings could provide a route to selective conversion of biomass into value-added chemicals.
Researchers develop a quantum perovskite material that exhibits adaptive response to repeated proton insertion and removal, resembling brain's desensitization. This property enables effective programming of the material like a computer.
A team of researchers at KAUST discovered the origin of strong photoluminescence in Cs4PbBr6, a perovskite material. Heating the crystal to 180°C irreversibly destroys its photoluminescence, but creates CsPbBr3 nanocrystals that act as traps for excitons, leading to efficient re-emission of light.
Researchers from MSU found that changing the ratio of components in light-absorbing perovskite layers influences film structure and solar cell efficiency. By studying intermediate compounds formed during crystallization, they discovered a key factor affecting perovskite crystal shape and solar cell performance.
Researchers have developed a new method to deposit CuSCN layers on perovskite films, resulting in stabilized power-conversion efficiencies exceeding 20%. The introduction of a thin spacer layer of reduced graphene oxide allows the cells to achieve excellent operational stability, retaining over 95% of their initial efficiency.
Scientists at KAUST and Oxford University have created a method to produce centimeter-scale, highly pure perovskite crystals by exploiting surface tension. This technique enables the growth of large-area perovskites without being limited to specific metal cations.
Perovskite solar cells could generate electricity more efficiently by harnessing the kinetic energy of electrons moving at high speeds. The study found that electrons retain their highest levels of energy for up to 10 quadrillionths of a second, limiting the time frame for extraction.
Glycol ethers added to thin film manufacturing boost perovskite crystal structure and efficiency, increasing solar cell performance.
Scientists have made a breakthrough in producing ultra-pure green light for high-resolution displays, exceeding 97-99% of the Rec.2020 standard. The new technology uses simple room-temperature processes and inexpensive materials, paving the way for low-cost industrial production.
Defects in perovskites can be permanently healed with light and humidity, accelerating the development of cheap and high-performance solar cells. The process involves exposure to light, oxygen, and controlled humidity levels, which create a protective shell that locks in improvements.
Stanford University scientists have created a compound solar cell with perovskite microcells encapsulated in hexagonal scaffolds, inspired by the insect compound eye. The design increases fracture resistance without compromising efficiency, and the cells withstand extreme temperatures and humidity.
Researchers have successfully grown single crystalline films of perovskite CH3NH3PbI3 on electron-collecting substrates, exhibiting excellent photovoltaic properties. The resulting devices achieve high efficiency rates, closing the gap with traditional silicon-based solar cells and offering a promising solution for renewable energy.
Scientists at King Abdullah University of Science & Technology (KAUST) have discovered a crystalline material that changes shape in response to light, showcasing its potential applications in novel optoelectronic devices
Researchers at OIST have improved the stability of perovskite solar cells by inserting a thin polymer layer, extending their lifespan four-fold. They have also developed a new method to manufacture perovskite LEDs using chemical vapor deposition, which could lead to lower-cost and more efficient lighting solutions.
Scientists at KAUST have discovered that two-dimensional layers of perovskite material can achieve higher purity levels than their three-dimensional counterparts. This breakthrough could lead to more efficient and cost-effective solar cells.
Researchers used a powerful electron camera to study the motion of atoms in perovskite materials, discovering that light causes unusual deformations that could enhance their efficiency. These findings provide clues for making better solar cells.
Researchers at UNIST have achieved a new world record efficiency performance of 22.1% in small cells and 19.7 percent in 1-square-centimeter cells using perovskite solar cells. The breakthrough is made possible by careful control of growth conditions to fix defects that reduce photoelectric efficiency.
A team of researchers from the University of Cambridge and the US has demonstrated a non-toxic alternative to lead for use in next-generation solar cells, using bismuth oxyiodide. The material shows comparable performance to current silicon-based solar cells, with efficiencies up to 22%.
Researchers developed a meniscus-assisted solution printing (MASP) technique to fabricate high-efficiency perovskite solar cells with large crystals. The process boosts power conversion efficiencies by controlling crystal size and orientation, resulting in stable and efficient solar cells.
Researchers at Berkeley Lab have discovered a new type of semiconductor that can emit multiple bright colors from a single nanowire, challenging traditional quantum dot displays. The 'soft' semiconductors use ionic bonds instead of covalent bonds, making them easier to reconfigure and produce.
Scientists have developed an ultra-stable perovskite solar cell with a constant efficiency of 11.2% for more than 10,000 hours, resolving stability issues and paving the way for commercialization. The 2D/3D hybrid perovskite design efficiently absorbs light across the visible spectrum and transports electrical charges.
Researchers at University of Utah have discovered that organic-inorganic hybrid perovskites possess contradictory properties necessary to make spintronic devices work, enabling exponentially more data processing and overcoming size limitations in traditional electronics.
Researchers developed a new perovskite material that overcomes water sensitivity, creating stable and efficient solar cells with a ten percent efficiency rate. The material's ability to self-organize in an edge-standing structure increases electron circulation, improving energy conversion.
Researchers have found a new compound that can be used to create highly efficient perovskite solar cells, with efficiency rates of over 22% compared to traditional silicon-based cells. The discovery was made using a spin coating technique and has the potential to revolutionize the field of photovoltaics.
New research reveals the mechanism behind perovskite solar cell breakdown in air, which causes significant degradation and reduces their efficiency. By understanding this process at an atomic scale, scientists have proposed possible solutions to engineer defects out of the material.
Scientists have discovered a new class of materials with mixed valence states in lead perovskites, exhibiting charge ordering and high thermopower. The study reveals the key to stabilizing these unusual valence states through tuning the energy levels of Pb 6s and TM 3d orbitals.
EPFL scientists have found that light plays a crucial role in controlling the morphology of perovskite crystals, leading to improved photovoltaic performance. The study reveals that the presence of light accelerates the formation of perovskites and enhances crystal growth.
Scientists at NREL developed a new perovskite ink with a long processing window, allowing for the production of high-efficiency solar cells. The ink was tested using blade-coating and produced indistinguishable film morphology and device performance.