Articles tagged with Perovskites
Researchers successfully converted a 2D hybrid Dion-Jacobson lead iodide perovskite to a 3D perovskite phase at ambient conditions after pressure treatment. This process enables the use of high-pressure techniques for preparing materials with improved properties, suitable for real-world applications in optoelectronics and luminescence.
Researchers sent perovskite and organic solar cells on a rocket into space, withstanding extreme conditions to produce power from direct sunlight and reflective light. The technology offers a promising solution for future space missions, as it is incredibly light and flexible, producing up to 14 milliwatts per square centimeter.
Researchers at Cornell University have found that photovoltaic wafers made from all-perovskite structures outperform traditional silicon-based solar panels. This breakthrough could lead to a more sustainable future for solar energy, with perovskite cells offering faster returns on investment and lower environmental impacts.
Researchers at UC San Diego developed a new method to fabricate perovskites as single-crystal thin films, resulting in flexible single-crystal films with controlled area, thickness, and composition. These single-crystal films showed greater efficiency and enhanced stability than polycrystalline counterparts.
Scientists have created next-generation solar modules with high efficiency and good stability using perovskite material. The breakthroughs address key issues such as scalability and durability, paving the way for commercialization.
A team of researchers found that applying pressure to a 2D halide perovskite suppressed carrier trapping and led to enhanced emission. The findings show a new phase with higher crystallographic symmetry and fewer trap states was formed after pressure treatment.
Researchers at NTU Singapore have created a perovskite solar mini module with the highest power conversion efficiency, paving the way for market adoption. The use of thermal co-evaporation enables scalable production of large-area perovskite solar cells.
Researchers have identified the structural changes and metallization caused by external pressure in hybrid Perovskite solar cells. The study provides a theoretical explanation for phase transition and metallization, paving the way for high-performance solar cell materials that can withstand extreme environments.
A team of researchers at POSTECH has developed a new type of semiconductor memory that uses a two-dimensional layered structure material, which can operate stably at low power consumption. The material, CsPb2Br5, showed improved stability and performance compared to traditional materials, with memory characteristics maintained over 140°C.
Perovskite solar cells have a love-hate relationship with sunlight, generating energy but also impairs stability and performance over time. Research reveals that charged particles in perovskites flow to areas with low band gap, causing clusters to form and limiting efficiency.
Researchers developed a technique to modify defect populations in perovskite crystals without chemical additives, enabling the material to act as a memristor device with multiple resistance states. The voltage regulation engineering helps improve optical and electrical properties by passivating deep-level donor-like defects.
Researchers at Princeton University have discovered that the source of thermodynamic instability in cesium lead iodide (CsPbI3) is the 'rattling' behavior of the inorganic cesium atom within its crystal structure. This discovery could help improve the stability and efficiency of solar cells made from this material.
Researchers discovered ferroelastic twin domains in perovskite crystals that can influence electron movement. These structures, or 'electron highways,' could make perovskite solar cells more powerful and improve their efficiency.
Perovskite solar cells, discovered almost 200 years ago, hold potential to undercut fossil fuels with lower manufacturing costs and improved efficiency. The discovery has sparked a new wave of research into improving the stability and commercial viability of these materials.
Researchers from KAUST developed a simple and noninvasive treatment to optimize perovskite solar cell materials. A bromine vapor treatment penetrates the surface of crystals, removing defects and producing a dramatic increase in electrical conductivity and carrier mobility.
Scientists at HZB have successfully produced functional light-emitting diodes using a metal halide perovskite material. The new printing process enables the creation of printed LEDs with significantly better optical and electronic characteristics compared to traditional additive manufacturing processes.
Researchers developed a new precision spray-coating method to create multilayer perovskite solar cells with better performance and stability. The technique allows for customizable device designs, enabling specific performance and stability requirements.
Australian scientists have developed a new generation of experimental solar energy cells that pass strict International Electrotechnical Commission testing standards for heat and humidity. The research, published in Science, uses perovskite crystals to convert sunlight into electricity, outperforming silicon-based cells.
Researchers have designed a π-conjugated small-molecule HTL material BDT-TPA-sTh, which improves hole-mobility and wettability with the perovskite precursor solution. This enhances the efficiency of p-i-n planar pero-SCs for large-area modular devices.
Scientists from University of Groningen have found that defects in perovskite materials cause broad-spectrum emissions and large colour variation, contradicting previous theory. This discovery has profound consequences for designing perovskite LEDs capable of broad-range light emission.
Researchers have developed lead-free perovskite solar cells with excellent optical properties and high stability, thanks to the use of tin and organic groups. The new material shows improved performance over traditional halide perovskites, paving the way for more efficient and stable solar energy harvesting.
Researchers at Iowa State University have developed a new type of solar cell that can withstand high temperatures while maintaining efficiency. The breakthrough uses a hybrid organic-inorganic perovskite material that is stable at temperatures above 200°F and has a photoconversion efficiency of 11.8%.
A Purdue University-led research team has found a way to make halide perovskites stable enough for use in solar panels and electronic devices. By inhibiting ion movement, the researchers unlocked their potential to form heterostructures that can perform multiple functions.
Researchers developed ultra-sensitive and stable X-ray detectors using 0D MA3Bi2I9 single-crystals, achieving low operating doses of 0.62 nGyair s-1 and high sensitivity comparable to 3D perovskite detectors. The discovery promises a promising X-ray detector candidate for medical applications.
Researchers from ITMO University developed a new composite material with perovskite nanocrystals, increasing operating time by almost three times and improving stability in air and water. The material retained its optical properties when dispersed in water, making it suitable for biological applications.
Scientists have identified a novel mechanism that facilitates high oxide-ion conductivity in a new class of layered perovskites. The discovery, made by Prof. Masatomo Yashima and colleagues from Tokyo Institute of Technology, opens up possibilities for designing novel oxide-ion conductors.
Researchers at Rensselaer Polytechnic Institute have developed a new lead-free chalcogenide perovskite that could provide a safer and more effective option for solar cells. The compound, barium zirconium sulfide (BaZrS3), is highly resistant to moisture and sunlight, making it an attractive alternative to traditional materials.
Researchers at Florida State University have created a hollow nanostructure for metal halide perovskites, which shows potential for more efficient photon-related technologies. The new structure exhibits pronounced quantum size effects and is the first to display negative curvature.
Researchers at Argonne National Laboratory have developed a new class of X-ray detectors based on layered perovskites, which are 100 times more sensitive than conventional detectors. The detector can detect X-rays over a broad energy range, making it suitable for various applications such as medical imaging and airport security.
Scientists have developed a method for precise, fast and high-quality laser processing of halide perovskites, promising light-emitting materials for solar energy, optical electronics, and metamaterials. The new technology can help to solve the problem of complicated processing and degradation of perovskites under various conditions.
Researchers at Ames Laboratory have experimentally proven the presence of the Rashba effect in bulk organometallic halide perovskites using terahertz light bursts. This discovery settles the long-standing debate about the effect's existence, offering significant advancements for spintronic and photovoltaic applications.
Researchers identify 'deep trap' caused by clusters of smaller atomic-sized defect sites at grain boundaries, leading to power losses and instability. The discovery could streamline efforts to increase efficiency of perovskites, bringing them closer to mass-market production.
Researchers discover deep trap clusters at grain boundaries in perovskites, reducing efficiency and stability. The findings could streamline efforts to increase the efficiency of perovskites for mass-market production.
Researchers at Helmholtz-Zentrum Berlin have developed a new tandem solar cell made of CIGS and perovskite, achieving an efficiency of 24.16 percent. This innovation has created a new branch on the NREL chart for two-terminal tandem cells.
The perovskite-based detector is 100 times more sensitive than conventional silicon-based detectors, enabling low-dose dental and medical images with reduced risks. The new technology also enhances resolution in security scanners and X-ray research applications.
University of Groningen scientists study the rapid formation of thin films in real-time during spin-coating from solution. They discovered that adding a small amount of a 2D material to tin-based perovskites helps orient the crystals but forms an insulating layer that reduces efficiency.
Researchers at Linköping University have developed a tiny unit that can both transmit and receive optical signals using perovskite diodes. This innovation has the potential to simplify and shrink optoelectronic systems, particularly in applications requiring low weight, flexibility, or large surfaces.
Scientists have created a stable perovskite LED with an efficiency of 17.3%, significantly surpassing previous results. The breakthrough composite thin film, made by embedding a perovskite into an organic molecule matrix, has enabled the development of long-lasting LEDs.
A new type of solar cell with a wide bandgap perovskite material has been developed to improve efficiency and durability. The researchers achieved a 26.7% efficient power conversion rate in their double layer solar cell, with the material retaining 80% of its initial capability after 1,000 hours of continuous illumination.
Scientists developed a new method to increase PL quantum yield of perovskites from 2.5% to 71.54% by adding water, maintaining luminescence in various solvents and exhibiting excellent ambient and thermal stability.
New OIHP/BHJ photodetectors offer ultra-fast response times of just 5.6 nanoseconds and a high external quantum efficiency of ~54% in the NIR region. They also achieve large linear dynamic range and room temperature stability, enabling high-quality imaging applications.
Researchers from the Qingdao Institute of Bioenergy and Bioprocess Technology discovered a way to inhibit side reactions in perovskite solutions, leading to improved stability, efficiency, and reproducibility of solar cells. A low-boiling-point stabilizer, triethyl borate, was found to be effective in stopping unwanted reactions.
Researchers at NREL developed a new formula to boost perovskite solar cell longevity and efficiency by suppressing light-induced phase-segregation. The tandem perovskite/silicon solar cell achieved an efficiency of 27%, outperforming existing silicon-based cells.
Researchers demonstrate a method to modulate magnetic information using visible light, reducing magnetization in a ferromagnetic film. This technique could enable rapid digital storage and retrieval using room temperature illumination.
Researchers at CU Boulder have developed a low-cost solar cell with one of the highest power-conversion efficiencies to date by layering perovskite cells on top of silicon cells. The new technology increases efficiency by up to 27% and is more affordable than current silicon-based cells.
Researchers from the University of Toronto and KAUST have created a highly efficient and stable tandem solar cell by combining perovskites with silicon. The tandem solar cell achieved an efficiency of 25.7% and was stable for over 400 hours at high temperatures.
Researchers at KAUST have discovered a way to boost the efficiency of long-lived inverted perovskite solar cells, achieving record-certified efficiency of 22.3 percent. The innovative approach involves adding long-chain alkylamine ligands during production, which enhances stability and reduces boundary defects.
Researchers developed a new material technology to create high-efficiency perovskite solar cells using eco-friendly organic materials dissolved in peppermint oil or walnut aroma. The new polymers overcame the instability issue of conventional perovskite solar cells, maintaining 88% efficiency after 30 days.
Developed by NREL and NIU researchers, the technique prevents toxic lead from leaking into water when perovskite solar cells are damaged. The additive layers reduce lead toxicity without affecting cell performance.
Scientists have developed a technique to sequester lead in perovskite solar cells, minimizing potential toxic leakage by applying lead-absorbing films to the front and back of the solar cell. The new approach has been shown to capture 96% of lead leakage under severe damage conditions.
Researchers at the University of Sydney have found a way to manipulate laser light using inexpensive crystals, known as perovskites. The discovery could help drive down costs in various industries by offering an alternative to expensive Faraday rotators.
Researchers at Brown University found that perovskite films crack easily but can be healed with compression or moderate heat, which could improve durability and long-term reliability for commercialization
A new approach to electrostatic layer deposition has been reported, leading to efficient perovskite solar cells. The technique produces uniform electron transport layers without the need for a vacuum environment, enabling the creation of high-efficiency solar cells with improved power-conversion efficiencies.
A new study outlines a roadmap for perovskite-based solar cells to gain traction in the global market. Starting with higher-value niche markets, manufacturers can avoid steep initial capital costs and gradually expand production capabilities.
A new consensus statement has been established to assess and report the stability of perovskite photovoltaic devices. The agreement aims to improve reproducibility in studies by providing a set of testing procedures specific to this technology, including light-dark-cycling and intrinsic stability testing.
Researchers created a blue light-emitting diode from halide perovskites, but discovered the materials are inherently unstable due to their weaker ionic bonds. The crystal structure changes with temperature, humidity, and chemical environment, affecting optical and electronic properties.
A recent study found that perovskite solar cells absorb lead from the environment, with lead from these cells being ten times more bioavailable than from other industrial sources. This could have significant implications for the safety of these materials.
Engineers at UC San Diego created a way to fabricate perovskite single crystals with precisely deformed structures, enabling significant changes in material properties. The researchers found that -1.2% strain produced samples with the best charge-carrier mobility and stabilized its photoactive alpha phase.
Researchers at KAUST have developed a way to prolong hot carrier lifetime in 2D perovskite solar materials, potentially increasing solar energy efficiency. The approach involves tuning the structure of hybrid organic-inorganic perovskites to suppress hot carrier cooling mechanisms.
Researchers have created BaZrS3 thin films with strong light absorption and good charge transport, making them ideal for photovoltaics and LEDs. The new materials could lead to more efficient solar panels and lower energy costs.