Articles tagged with Perovskites
Researchers from the University of Oklahoma have discovered a way to stabilize quantum dots, enabling continuous emission at room temperature. This breakthrough could make quantum computing and communication devices more efficient, cheaper, and appealing.
A novel bifacial linker, potassium benzyl(trifluoro)borate (BnBF3K), has been developed to prevent heterointerfacial delamination in flexible perovskite solar cells. This study significantly enhances device performance and mechanical stability by optimizing adhesion at the SnO2/perovskite interface.
A research team at POSTECH developed a synthesis method that precisely controls the size and shape of perovskite nanocrystals using liquid crystalline antisolvents. The method produces uniformly sized particles without additional purification processes, accelerating commercialization of optoelectronic devices.
Thermal stress is the key factor in degrading metal-halide perovskites used in solar cells. Researchers propose increasing crystalline quality and using buffer layers to improve stability.
Researchers from Indian Institute of Technology developed bifacial perovskite solar cells with a novel NiO/Ag/NiO transparent electrode, achieving high efficiency, durability, and infrared transparency. The cells demonstrated impressive power conversion efficiencies and high bifaciality factors.
Researchers at NC State University have developed a new technique to tune the optical properties of quantum dots using light, reducing energy consumption and environmental impact. This method allows for precise control over the bandgap, enabling the creation of high-quality perovskite quantum dots for optoelectronic devices.
Researchers at the University of Sheffield have developed a new type of back-contact solar cell design using perovskite material and tiny grooves in plastic film. The technology enables scalable, low-cost manufacturing and avoids expensive rare earth metals, making it sustainable and affordable.
Scientists at Linköping University have created a sustainable recycling process for perovskite solar cells, allowing all parts to be reused without hazardous solvents. The recycled cell retains the same efficiency as the original, paving the way for efficient energy harvesting and reduced e-waste.
Researchers used neutrons to study the magnetic structure of layered perovskites, resolving a long-standing mystery. The study reveals a spiral magnetic structure, which is essential for understanding the material's promising magnetic and electric properties.
Teams from HZB and Humboldt University Berlin have developed a new tandem solar cell combining CIGS with perovskite, achieving a world record efficiency of 24.6%. This breakthrough could lead to higher efficiencies of over 30%, making CIGS-perovskite tandem cells a promising technology for sustainable energy solutions.
A recent study by Ritsumeikan University researchers analyzed the durability of flexible perovskite solar cells under damp heat conditions. The findings revealed that high humidity leads to degradation, while a high-quality barrier film retained most power conversion efficiency, making it crucial for long-term stability.
Researchers have developed a perovskite X-ray detector that uses cascade engineering to reduce dark current, enabling high-quality medical images at ultra-low doses. The device achieved a detection limit of 100 nGy·s−1, a significant improvement over previous limits.
Researchers are exploring halide perovskites, a material that converts sunlight into energy efficiently. The team created distinct properties using ultra-cool methods, enabling mass production of solar cells.
A new study reveals that gamma-ray exposure can passivate some defects while activating others, leading to improved recombination dynamics. The concentration of dominant 0.5 eV defects decreases with increasing dose, while the diffusion coefficient increases by orders of magnitude.
Researchers have developed a novel method to overcome challenges in manufacturing thin-film perovskites suitable for micro-LED displays. The technique enables seamless integration into ultrahigh-resolution micro-LEDs with pixels less than 5 μm, achieving remarkable results including electroluminescence efficiency and brightness.
Researchers demonstrated the existence of an Exciton-Polaron in a quasi-one-dimensional hybrid perovskitoid, showcasing its potential for optoelectronic applications. The study reveals that the one-dimensional lattice is soft and susceptible to reorganization, enabling tunable frameworks for new quantum technologies.
Researchers designed a self-assembled material to address energy level mismatches and degradation at Sn-Pb perovskite interfaces, resulting in high-efficiency devices with enhanced stability. The strategy achieved a PCE of 23.45% and improved shelf storage stability.
Researchers have combined two emerging solar cell technologies, perovskite and organic solar cells, to create a tandem solar cell that achieves a record level of 25.7% efficiency while minimizing carbon footprint. The new combination overcomes previous limitations by utilizing novel materials and passivation layers.
Researchers from Institute of Science Tokyo successfully developed a multi-element perovskite catalyst that selectively oxidizes light alkanes to alcohols with high yield and selectivity. The breakthrough catalyst operates under mild conditions and exhibits excellent stability and reusability.
Rice scientists develop new nanomaterial that kills bacteria in biofluids under visible light, with minimal degradation and low lead leaching. The findings suggest potential applications in water treatment and therapeutics.
Researchers developed a new amidinium-based coating that extends the life of perovskite solar cells, tripling their T90 lifetime and doubling their stability. The coated cells achieved a record-breaking 26% efficiency and withstood harsh conditions for up to 1,100 hours.
Researchers at the University of Surrey have developed a strategy to improve both the performance and stability of perovskite-based solar cells. By introducing an iodine-reducing agent, they increased the efficiency and extended the lifespan of the devices.
Researchers at KAIST introduced a new hybrid device structure with organic photo-semiconductors that expand the absorption range to near-infrared, improving power conversion efficiency. The device achieved a high internal quantum efficiency of 78% in the near-infrared region and improved stability for over 1,200 hours.
A new hole-transport material facilitates charge transfer and demonstrates high charge mobility in perovskite solar cells. However, the devices show reduced current due to an energetic barrier at the perovskite/HND-2NOMe interface, hindering performance.
Researchers at Rensselaer Polytechnic Institute developed a polymer film infused with a special chalcogenide perovskite compound that produces electricity when squeezed or stressed. The material has shown promising results, including powering LED lights and potentially being used in machines, infrastructure, and biomedical applications.
Computer simulations point the way towards better solar cells by gaining crucial insights into what influences properties of 2D perovskite materials. Researchers have discovered that the choice of organic linkers can directly control how atoms in surface layers move, affecting optical properties.
Scientists developed a technique to engineer LHPs with controlled size distribution of quantum wells, improving efficiency and stability in LEDs and lasers. By controlling nanoplatelets' growth, they achieved excellent energy cascades, enhancing photovoltaic performance and stability.
Researchers at City University of Hong Kong have developed a new fabrication technique for perovskite solar cells, achieving power conversion efficiencies over 25% and 95% efficiency after 2,000 hours. This simplification makes industrial production more cost-effective and paves the way for more reliable and efficient solar cells.
Researchers have developed femtosecond laser-induced perovskite precipitation technology, enabling high-precision patterning of perovskite materials. This technology has shown great potential in anti-counterfeiting and information storage, as well as optical displays and micro-LEDs.
A new synthesis method, template synthesis, enables the creation of multilayered perovskites with unique ferroelectric properties. The number of layers affects the material's behavior, switching between conventional and indirect ferroelectricity models.
A team of GIST researchers developed a new defect passivation strategy for polycrystalline perovskites, leading to improved power conversion efficiency and long-term operational stability. The strategy uses a chemically identical polytype of perovskite to suppress defects in the crystal structure.
Researchers at Seoul National University developed ultra-high efficiency perovskite nanocrystal LEDs by incorporating conjugated molecular multipods to strengthen the lattice and reduce dynamic disorder, leading to improved luminescence efficiency. This achievement is expected to significantly accelerate the commercialization of next-g...
Scientists have created perovskite crystals with predefined shapes to serve as waveguides, couplers, and modulators in integrated photonic circuits. The edge lasing effect is associated with exciton-polariton condensates, which exhibit nonlinear effects, enabling applications in quantum computing.
Researchers find undoped Spiro-OMeTAD outperforms doped devices under low-light conditions due to reduced series resistance. Devices show improved stability and reliability in these conditions, challenging the need for doping.
A research team at City University of Hong Kong has developed next-generation printable perovskite solar cells with higher efficiency, stability, and lower production costs. These cells can be manufactured using a 'printing' process, reducing energy consumption and processing steps compared to traditional silicon-based solar cells.
Researchers at HKUST developed a molecular treatment that enhances perovskite solar cells' efficiency and durability. The breakthrough identified critical parameters for halide perovskites, leading to high open-circuit voltages and remarkable operational stability.
Researchers developed a coating technique that increases the efficiency of monolithic tandem cells made of silicon and perovskite, while maintaining long-term stability. The coating uses thiophenethylammonium compound to smooth out surface defects, resulting in a high efficiency rate of nearly 31%.
Researchers at Chung-Ang University have discovered an additive that enhances the efficiency of perovskite solar cells, resulting in a record-breaking 12.22% efficiency. The additive, 4-phenylthiosemicarbazide, improves stability and reduces defects, paving the way for more accessible and long-lasting solar panels.
Researchers at Kaunas University of Technology (KTU) develop materials to improve indoor photovoltaic cells, generating electricity even in low-intensity light. The innovation utilizes Internet of Things technologies to efficiently regulate device operation and optimize energy consumption.
Researchers have successfully transformed existing optoelectronic devices, including LEDs, into spintronics devices by injecting spin-aligned electrons without ferromagnets or magnetic fields. The breakthrough uses a chiral spin filter made from hybrid organic-inorganic halide perovskite material, overcoming a major barrier to commerci...
Researchers proposed a design strategy to mitigate nonlinear responses in polycrystalline metal halide perovskite X-ray detectors, addressing issues like 'delay' and 'ghosting'. The study demonstrated high-resolution X-ray imaging with suppressed ghosting contrast and top sensitivity for similar X-ray energies among polycrystalline per...
A new living passivator has been developed to improve the stability and efficiency of perovskite solar cells. The coating can dynamically heal defects caused by environmental stressors like water and heat, improving operational stability for over 1,000 hours at high temperatures.
A research team at HKUST discovered surface concavities on individual crystal grains of perovskite thin films, affecting film properties and reliability. They pioneered a new method to remove these concavities, resulting in improved efficiency retention under various tests.
Scientists develop stable and efficient hybrid light-emitting diodes combining perovskite and organic technologies. The new LEDs boast a narrow emission spectrum, high luminance, and an operational half-lifetime exceeding 42,000 hours.
Scientists at the National Renewable Energy Laboratory have made advances in optoelectronics by integrating a III-V semiconductor optoelectronic structure with a chiral halide perovskite semiconductor. This breakthrough enables control over electron spin, which can be used to increase data processing speeds and decrease power consumption.
Researchers at the University of Texas at Austin have discovered topological vortices in polaron quasiparticles that contribute to generating electricity from sunlight. The discovery can help develop new solar cells and LED lighting with exceptional energy conversion efficiency.
Researchers at Rice University have made a breakthrough in synthesizing formamidinium lead iodide (FAPbI3) perovskite solar cells into ultrastable, high-quality photovoltaic films. The overall efficiency of the resulting FAPbI3 solar cells decreased by less than 3% over 1,000 hours of operation.
The Purdue method creates layered perovskite nanowires with exceptionally well-defined and flexible cavities that exhibit unusual optical properties. These nanowires show promising applications in nanophotonics and nanoelectronics, including anisotropic emission polarization and efficient light amplification.
Researchers have developed a new perovskite-based camera inspired by the structures and functions of bird's eyes, specializing in object detection. The camera features an artificial fovea and multispectral image sensor that detects UV and RGB light, providing greater motion detection capabilities than conventional cameras.
Scientists have engineered materials that are both stiff and excellent thermal insulators, opening up new possibilities for applications such as electronic device coatings. The discovery allows for controlling the material's properties through composition adjustments.
A newly developed perovskite with large intrinsic oxygen vacancies achieves high proton conduction at low and intermediate temperatures. The material can take up more water to increase its proton concentration, reducing proton trapping through electrostatic repulsion between the dopant and proton.
Researchers develop a new method to grow single-crystal perovskite hydrides, allowing for accurate measurement of intrinsic H- conductivity. The technique enables the production of high-quality crystals with minimal imperfections, paving the way for sustainable energy technologies and hydrogen storage applications.
Researchers from Kaunas University of Technology have developed a new technology for perovskite solar cells using self-assembling monolayers. This innovation increases the efficiency of solar cells by allowing only one type of charge to pass through, similar to an automatic gate on the subway.
Assistant professor Yinsheng Guo is developing a comprehensive understanding of metal halide perovskites, promising semiconducting materials for energy technologies. He also seeks to transform how physical chemistry is taught using computational and experiential approaches.
Researchers at PolyU developed a new class of 2D all-organic perovskites with high dielectric constants, surpassing those of silicon dioxide and hexagonal boron nitride. These materials show promise for use in 2D electronics, enabling superior control over current flow and potential applications in capacitors and transistors.
Researchers at DGIST and UNIST developed high-performance, skin-attachable perovskite pure red light-emitting devices with enhanced color representation. The team replaced iodine with bromine to improve surface-to-volume ratio and stability, achieving exceptional electrical properties.
Researchers developed a displacement-type ferroelectric material with high dielectric constant by incorporating rubidium ions into perovskite compounds. The material exhibits unique distortions and phase transitions across a broad temperature range.
A new defect-ordered layered halide perovskite was discovered, shedding light on how order can emerge through defects in hybrid organic–inorganic compounds. The compound's optical bandgap increased with the concentration of ordered defects in the lattice, presenting a new strategy for tuning perovskite properties.
Researchers at USTC developed a novel stabilizer, DMAFo, to inhibit oxidation of iodide ions and deprotonation of organic cations in air-processed p-i-n perovskite solar cells. The study achieved a maximum PCE of 25.4% and certified stabilized efficiency of 24.7%.
Researchers at Linképing University have developed a digital display screen where LEDs react to touch, light, fingerprints, and the user's pulse, among other things. The screen can also be charged through the screen due to its ability to act as solar cells.