Articles tagged with Perovskites
Researchers at Princeton University have developed a technique to create ultra-fine grained films using self-assembling nanoparticles, leading to more efficient and stable perovskite-based LEDs. This advancement brings perovskite technologies closer to commercialization and could speed the adoption of lower-cost and environmentally fri...
Researchers at Case Western Reserve University have directly measured the diffusion length of perovskite solar films, showing that electrons can travel long distances without deteriorating. The findings suggest that solar cells could be made thicker without harming their efficiency, potentially leading to better solar panels.
Researchers used bright X-rays to observe the one-step solution-coating process of perovskite material, identifying a crucial intermediate solid state. This discovery highlights the importance of solvent-solute interactions in halide perovskites, which significantly impacts film formation behavior and solar cell performance.
A new study has found that iodide-based perovskites produce a gaseous form of iodine during operation, causing further degradation of the material. The researchers suggest that developing new materials with reduced iodine concentrations or reinforced structures could help address this issue.
Researchers at Eindhoven University of Technology developed a new type of solar cell using perovskite material. The addition of a thin layer of aluminum oxide improved the stability of the cell against humidity and increased its yield by 3%.
Researchers at the University of New South Wales achieved a 12.1% efficiency rating for a 16 cm2 perovskite solar cell, making it the largest single certified with the highest energy conversion efficiency. The team has also demonstrated an 18% efficiency rating on smaller cells and plans to extend durability.
EPFL scientists developed a new perovskite material with rapid and reversible magnetic properties, enabling high-density data storage systems. The material's unique photovoltaic properties allow for easy manipulation of its magnetic order via light illumination.
Researchers at Australian National University have developed a new way to fabricate high-efficiency semi-transparent perovskite solar cells, which can improve the performance of conventional silicon solar cells. The new fabrication method could increase power output by up to 25% and achieve efficiencies of up to 30%.
Scientists have developed a new design for solar cells made from perovskite, achieving an average steady-state efficiency of 18.4%. The innovative tandem solar cell combines two types of perovskite into one photovoltaic cell, absorbing nearly the entire spectrum of visible light and outperforming traditional silicon-based solar cells.
Researchers from Stanford and Oxford have created a novel perovskite solar cell design that converts sunlight into electricity with an efficiency of 20.3 percent, rivaling silicon solar cells on the market today.
Researchers at NREL discovered a method to stabilize an all-inorganic perovskite material at room temperature, increasing its stability and efficiency. The new solar cells convert sunlight into electricity with 10.77 percent efficiency, surpassing other reported all-inorganic perovskite solar cells.
Scientists have made a significant advance toward more practical, environmentally friendly solar cells using inexpensive halide perovskite materials. The new cells have a power conversion efficiency of 15 percent and contain 60% less lead than traditional cells, representing a major step towards sustainable energy solutions.
Scientists at Oxford University have developed a non-toxic solvent system that can be used to manufacture perovskite solar cells, overcoming a major barrier to their commercialization. The clean solvent quickly crystallizes perovskite films at room temperature, making it suitable for coating large solar panels.
Researchers at OIST have made significant breakthroughs in perovskite solar cells, improving efficiency, stability, and scalability. New post-annealing treatments and manufacturing methods have increased conversion efficiency to 18.4%, while discovering new decomposition products has led to the development of more stable materials.
Researchers have discovered a phenomenon where certain oxides oscillate when exposed to water vapor, generating oxygen gas and exhibiting flexibility unlike expected. The exact frequency of the oscillations can be precisely tuned, which could have practical applications in battery materials and water-splitting devices.
Researchers have observed a unique phenomenon in perovskite oxides, where they oscillate when exposed to water vapor and electron beams, generating oxygen gas. The exact frequency of the oscillations can be precisely tuned, which could have practical applications for battery development and water-splitting devices.
Recent perovskite research by Ames Laboratory scientist Javier Vela reveals enhanced thermal and moisture stability, as well as tunable light absorption, in mixed-halide perovskites. This breakthrough may lead to more efficient solar cells and LEDs.
Scientists at NREL found that perovskites could have great potential for optoelectronic applications beyond photovoltaics, including in quantum computing. The discovery was made by accident while investigating excitons in perovskites and demonstrates the optical Stark effect's promise as an ultrafast optical switch.
Researchers at NREL and Shanghai Jiao Tong University develop a method to treat perovskite films with MABr solution, repairing defects and improving efficiency. The new approach boosts the efficiency of perovskite solar cells to up to 19% and demonstrates improved reproducibility.
University of Groningen scientists discovered that removing air from perovskite crystals can deactivate 'traps' that reduce solar cell efficiency, allowing for more efficient solar cells. Researchers also found that oxygen and water vapor can be used to create new gas sensors for detecting seal breaks in food packaging.
Researchers found that moisture in the air enhances perovskite solar cells' performance by redistributing a dopant, increasing electric properties. However, prolonged exposure to moisture can be detrimental.
Researchers from the University of Houston have reported a critical step toward large-scale manufacture of better and less-expensive solar panels. They discovered how perovskite thin films change structure upon gentle heating, crucial for designing a manufacturing process that can consistently produce high-efficiency solar panels.
Researchers have made significant breakthroughs in perovskite solar cells by developing a hydrophobic conducting polymer that improves efficiency and stability without additives. The new cells retain high performance over two months in humid conditions, paving the way for commercialization.
Researchers have developed a new type of two-dimensional layered perovskite with outstanding stability and more than triple the material's previous power conversion efficiency. The breakthrough involves flipping crystals during casting, eliminating a gap in electron flow that previously reduced efficiency.
Scientists at Berkeley Lab have discovered a possible secret to dramatically boosting the efficiency of perovskite solar cells, potentially increasing conversion rates up to 31 percent. The discovery involves exploiting the unique properties of facets on individual grains in the crystalline material.
Researchers discovered that charge carriers in perovskites are polarons, moving coherently as one unit. This finding could help progress perovskite research projects and large-scale applications.
Researchers at Northwestern University discovered that layered perovskite ferroelectrics can completely lose their polarization when subjected to too much strain. This unexpected finding opens up new avenues for developing more efficient logic devices and memory elements.
Researchers at UC Santa Cruz developed a new capping strategy to stabilize perovskite nanocrystals, overcoming instability issues with organometal-halide materials. The approach uses unique branched ligands to control particle size and improve photoluminescence quantum yield.
Researchers have developed perovskite solar cells with an average efficiency of 19.6% and a record-breaking aperture area of 1 cm2, overcoming scalability limitations. The new technique eliminates impurities and grain boundaries, resulting in highly oriented crystalline films.
EPFL researchers have achieved the highest performance ever measured for larger-size perovskite solar cells, reaching over 20% efficiency. This breakthrough could lead to increased efficiency in hybrid solar panels that combine perovskites with silicon, potentially exceeding 30% efficiency.
Researchers at MIT have discovered a process to remove defects in new solar cell materials using intense light, improving their efficiency and consistency. The technique, called photo-induced cleaning, uses illumination to migrate ions that sweep away most of the defects in the material.
Researchers design a perovskite nanoparticle that changes color when interacting with ions and small molecules during chemical reactions. This allows for qualitative monitoring of reactions with the naked eye and quantitative analysis with simple instrumentation.
Researchers at Los Alamos National Laboratory found that perovskite solar cells degrade due to accumulated charge carriers and self-heal when exposed to darkness. Temperature control can stabilize device performance by reducing degradation mechanisms.
Researchers at Brown University have developed a new method to convert one type of perovskite into another, improving thermal stability and light absorption. The technique uses gas-based methods to flip the chemical switch, preserving the microstructure and morphology of the material.
ORNL researchers have found a potential path to improve solar cell efficiency by understanding the competition among halogen atoms during perovskite synthesis. The study reveals that bromine, chlorine, and iodine ions facilitate growth but only iodine gets into the final crystal structure.
Researchers at Stanford University found that applying pressure can increase the voltages of perovskite solar cells and enhance their electronic conductivity. This discovery holds promise for advancing low-cost tandem solar cells.
Researchers found that compression changes bandgaps, allowing scientists to tailor absorbed light wavelength and increase voltage. Pressure also significantly increases electronic conductivity of perovskites.
Scientists have discovered that hybrid lead halide perovskites can recycle light, a finding that could lead to large gains in solar cell efficiency. This process creates a concentration effect inside the cell, enhancing energy efficiency and potentially reaching efficiencies well beyond current silicon-based cells.
Researchers used DFT to calculate electronic, elastic, and vibrational properties of BiAlO3. The study explores its crystal structure, space group R3c, and lattice parameter a = b = c = 5.338?A.
EPFL scientists have engineered a molecularly engineered hole-transporting material for perovskite solar cells, achieving competitive power-conversion efficiency of 20.2%. The new material is significantly cheaper to synthesize and purify than existing alternatives.
Researchers from Warsaw University of Technology develop a mechanochemical process to synthesize perovskites, which can be used in high-efficiency solar cells. The new method is environmentally friendly and produces higher-quality materials than traditional methods.
Okinawa Institute of Science and Technology (OIST) researchers conduct the first atomic resolution study of organic-inorganic perovskites used in next generation solar cells. The study reveals positions and orientations of atoms and molecules, providing detailed information on structural defects.
Researchers have developed a hybrid silicon/perovskite tandem solar cell with an optimum band gap of 1.75eV, achieving a significant increase in efficiency due to improved light absorption and stability. This breakthrough could lead to the development of high-efficiency solar modules with increased theoretical maximum efficiency.
Researchers added cesium to perovskite solar cells, increasing thermal and photostability while maintaining high efficiency. The modified cells showed a boost in efficiency when layered on top of silicon photovoltaics, potentially achieving over 25% efficiency.
Water molecules on the surface of perovskites exhibit unusual behavior, where they split into two parts but continue to interact through weak hydrogen bonds. This interaction causes the OH group to circle the hydrogen atom like a dancer spinning on a pole, a phenomenon predicted by theory and confirmed through experiments.
Researchers at EMPA have developed tandem solar cells that convert a larger portion of light energy into electricity, using polycrystalline thin films and semi-transparent perovskite film. The new process enables large area low-cost processing and flexible plastic or metal foils as substrates.
Researchers from Florida State University have created a new type of high-performing LED using organometal halide perovskites, which outshines traditional LEDs by about 25 times. The material is also quick and easy to produce, reducing production costs.
Scientists at NREL have discovered a way to increase the efficiency of perovskite solar cells by reducing energy lost to heat. By utilizing hot-carrier solar cells, the potential efficiency limit increases from 33% to 66%. Perovskites are a class of materials with various technological applications.
A new monolithic tandem solar cell has been developed, combining perovskite and silicon materials to achieve an efficiency of 18%, nearly 20% higher than individual cells. The device's design includes a protective layer and a textured wafer, which could further increase efficiency up to 30%.
Researchers have identified silver corrosion as a major issue in perovskite solar cells, which absorb light across almost all visible wavelengths and exceed 20% power conversion efficiency. A solution-based method using silver electrodes can reduce costs but may lead to short lifetimes.
Researchers at Brown University have developed a new fabrication method to attain better than 15-percent energy conversion efficiency from perovskite solar cells larger than one square centimeter area. The process, which involves growing ultra-smooth films of perovskite crystals, reduces defects and increases efficiency.
Researchers have developed a process to cover fragile perovskite layers with graphene, resulting in an ideal front contact. The graphene layer enhances transparency and reduces open-circuit voltage losses, increasing overall conversion efficiency.
Researchers successfully grew atomically thin 2D sheets of organic-inorganic hybrid perovskites from solution, exhibiting efficient photoluminescence, color-tunability, and unique structural relaxation. The ultrathin sheets have square-shaped geometry, high quality crystallinity, and large size, facilitating their integration into futu...
A team of physicists has discovered stable ferroelectricity in a few nanometers thick strontium titanate film, contradicting expected behavior. This finding could lead to new materials for nanotechnology devices.
Researchers at Case Western Reserve University have developed a system that directly charges lithium-ion batteries with solar cells, achieving an efficiency of 7.8%, the most efficient reported to date.
A Brown University-led team has received a $4 million grant to study perovskite solar cells, aiming to improve efficiency and scalability. The researchers will focus on understanding the basic science behind these solar cells, developing new technologies, and investigating lead-free compositions.
A new study by Northwestern University and the U.S. Department of Energy's Argonne National Laboratory found that perovskite solar modules have a significantly shorter energy payback time than existing options, with some models returning energy investment in just two to three months. The researchers also analyzed the environmental impa...
Researchers at the University of Toronto have successfully combined two promising solar cell materials, perovskite and colloidal quantum dots, to create a new platform for LED technology. The resulting hybrid crystal enables hyper-efficient lighting with minimal loss or capture by defects.
Researchers have found that chlorine is depleted from the surface of perovskite absorber layers during processing, while its concentration near the interface with a titanium dioxide layer is higher. This distribution could help mitigate recombination and provide a template for growing the film.
Scientists at OIST eliminated problematic pinholes in perovskite solar cells, significantly improving their lifetime and reducing thickness. The breakthrough enables more efficient energy conversion, with improved durability and potential cost-effectiveness.