Articles tagged with Perovskites
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.
Researchers have developed tandem photovoltaics that combine perovskite and silicon solar cells to achieve higher energy conversion efficiencies. This innovative design could give a boost to industrial solar cell efficiencies and provide a promising alternative to traditional silicon solar cells.
Researchers have developed a new tandem solar cell that combines two types of photovoltaic material to harvest a broader range of the sun's energy. The new cell achieves an efficiency of 13.7 percent, which could be improved to over 30 percent with low-cost modifications.
A new method for making perovskite solar cells has been developed by researchers at Brown University, which involves a room-temperature solvent bath to create perovskite crystals. The technique produces high-quality crystalline films with precise control over thickness across large areas.
Researchers at the University of Utah have uncovered the secrets behind hybrid perovskite solar cell performance, enabling rapid testing using magnetic fields. The study confirms a new mechanism that explains the material's high efficiency, shedding light on its behavior and potential for optimization.
Researchers at OIST discovered that growing Perovskite films in ambient air instead of a nitrogen atmosphere results in larger grain sizes, making solar cells more efficient. The study's findings could significantly reduce costs associated with climate control machinery.
High-performance solar cells with a combination of materials like perovskite and spiro-MeOTAD are plagued by tiny pinholes, allowing water and gases to degrade the material. Researchers at OIST Graduate University believe these minuscule openings could be key to understanding the degradation of perovskite, leading to potential solutions.
Researchers have developed a hot-casting technique to grow large-area perovskite crystals, offering promising routes for low-cost, clean energy solutions. The technique yields highly efficient and reproducible solar cells with efficiencies approaching 18%, surpassing previous challenges in the field.
Researchers grew large, pure perovskite crystals and studied how electrons move through the material as light is converted to electricity. The study identifies the bar for ultimate solar energy-harvesting potential of perovskites and shows that progress is slated to continue without slowing down.
Researchers at the University of Exeter have identified a new material, perovskite, that can efficiently generate photovoltaic energy in various atmospheric conditions. This breakthrough has the potential to significantly reduce the costs of solar energy production.
Researchers at Stanford University have developed a novel perovskite-silicon tandem device that dramatically improves the overall efficiency of conventional silicon solar cells. The device achieves an efficiency boost of nearly 50% with relatively low cost, making it a promising solution for the renewable energy sector.
A UNL researcher has received a $1.2 million grant to improve the efficiency of solar cells using perovskite technology, aiming for at least 30% efficiency. The project seeks to refine silicon-based cells by overlaying them with perovskite, taking advantage of the material's natural abundance and properties.
A system proposed by MIT researchers recycles materials from discarded car batteries to produce long-lasting solar panels, providing emissions-free power. The production process uses a compound called perovskite, which has achieved power-conversion efficiency of over 19 percent.
Researchers at the University of Notre Dame have discovered a new class of hybrid perovskites with exceptional performance in solid-state thin film solar cells. The materials demonstrate high light-to-electricity conversion efficiencies approaching 20% and are easy to process using coating and printing techniques.
A hybrid form of perovskite has been used to make high-brightness LEDs with a simple and scalable process, potentially replacing conventional methods. The results could provide a lot of value to the flat-panel display industry.
A team of scientists in China has developed a new type of perovskite solar cell that does not use a hole-transportation layer, showing high efficiency and stability. The innovation reduces production costs and paves the way for a cost-effective branch of development in this type of solar cell.
Scientists have discovered a significant difference in lower mantle chemistry, shifting from a single ferromagnesian silicate mineral to two distinct phases, including an iron-rich and hexagonal structure called H-phase. This finding challenges geodynamic models and may lead to new discoveries about the deep Earth.
Northwestern University researchers have developed a new solar cell with good efficiency that uses tin instead of lead perovskite. The low-cost, environmentally friendly solar cell can be made easily using 'bench' chemistry.
Researchers at NREL have discovered a new solar material, perovskite, that can generate electricity more efficiently than previous materials. The material has a unique ability to diffuse photons a long distance, making it suitable for low-cost and high-efficiency devices.
Researchers have developed perovskite solar cells that excel at absorbing and emitting light, with a remarkable 70% efficiency rate. These 'wonder cells' can also produce cheap lasers, opening up new applications in telecommunications and light-emitting devices.
Scientists from EPFL investigated how generated electrical charges travel across perovskite surfaces of solar cells built with different architectures. The results showed two main dynamics: charge separation through electron transfer at sub-picosecond timescales, and significantly slower charge recombination for titanium oxide films.
NTU scientists have made a breakthrough in solar technology by developing a new material that is five times cheaper to produce and generates almost as much power as current thin film solar cells. The material, called perovskite, converts up to 15% of sunlight to electricity, close to the efficiency of current solar cells.
Researchers at EPFL have developed a new solid-state dye-sensitized solar cell (DSSC) design that increases efficiency to a record 15% without sacrificing stability. This breakthrough overcomes the inherent voltage loss of traditional DSSCs and opens a new era for DSSC development.
Researchers at Berkeley Lab have fabricated a perovskite-based superlens that captures evanescent light waves in the mid-infrared range, enabling highly sensitive biomedical detection and imaging. The superlens achieves an imaging resolution of one micrometer, surpassing the diffraction limit of conventional lenses.
Researchers at Berkeley Lab discovered a lead-free alternative to piezoelectric materials, bismuth ferrite, which enhances the piezoelectric effect under epitaxial strain. The study demonstrates reversible phase changes in thin films of bismuth ferrite, opening up new possibilities for devices and applications.
Scientists at Carnegie Institution's Geophysical Laboratory found that highly oxidized iron in mantle minerals is crucial for heat transfer in the lower mantle. The discovery challenges current models of mantle dynamics and has significant implications for understanding material movement throughout the planet.
Researchers from the Max Planck Institute for Chemistry studied the stability of materials relevant to the lower mantle under very high pressures and temperatures. Their findings indicate that partial melting is more likely than previously thought to explain seismic anomalies in this region.