Articles tagged with Perovskites
Scientists at NREL developed a next-generation thermochromic window that reduces energy consumption and generates electricity. The new technology enables various colors and temperature-driven color changes, increasing design flexibility and control over building aesthetics.
Researchers have found a surprising solution to stabilize mixed-halide perovskites, a crucial material for efficient solar photovoltaics. Increasing the intensity of light can undo the disruption caused by lower intensities, allowing researchers to control the material's bandgap and improve device efficiency.
The University of Surrey has made significant advancements in perovskite tandem solar cells, achieving higher power conversion efficiencies through adjustments to thickness and the development of more effective protective layers. This progress holds promise for accelerating commercialization and promoting a shift towards green energy.
Scientists have used neutrons to study the twin structure of halide perovskites, a class of materials crucial for high-efficiency solar cells. The research reveals that crystals grown at room temperature also form twins, providing new insights into their crystallization and growth process.
Researchers at Seoul National University have developed an air-stable color conversion layer using perovskite nanocrystals and a flexible polymer matrix, enabling the creation of stretchable displays that can be bent, stretched, and attached to the skin. The new material has shown improved stability and photoluminescence intensity unde...
Researchers at EPFL have developed a novel deposition method that enables the creation of highly efficient and stable black-phase FAPbI3 perovskite solar cells. The new method, which uses vapor-assisted deposition, overcomes the stability issues associated with traditional methods, resulting in power-conversion efficiencies of over 23%.
A team of scientists developed wearable LiFi based on electroluminescence-photodetection bifunctional fibers enabled by perovskite QDs. The fibers possess a narrowest luminescence spectrum and can simultaneously transmit and receive information.
Researchers from City University of Hong Kong have developed a novel method to tackle instability and potential environmental impact in perovskite solar cells, achieving high power conversion efficiency while minimizing lead leakage. The team's innovative use of 2D metal-organic frameworks enhances device performance and stability.
The study reveals that the insulating ground state in NaOsO3 can be preserved up to 35 GPa, with a sluggish metal-insulator transition reduction from 410 K to near room temperature. The team also finds hidden hysteretic resistance properties and electronic character anomalies under pressure.
Scientists investigate how perovskite/silicon tandem solar cells perform in sunny and hot environments, finding that the perovskite bandgap gets larger as the device heats up, allowing more stable compositions to be used.
Researchers have created a new kind of liquid scintillator by combining perovskite nanocrystals with organic molecules, enabling efficient X-ray detection and high-resolution imaging. The hybrid material outperforms conventional scintillators in terms of quantum yield and scintillation decay time.
Researchers have successfully overcome the phenomenon known as lasing death in quasi-2D perovskites by managing triplet excitons. By incorporating an organic layer to hold triplets in a low energy state, continuous lasing was achieved under constant optical excitation.
A CU student collaborated with three research teams to study perovskite nanocrystals, which have numerous applications. The team discovered a phase transition that affects the material's optical properties and has relevance to applications already in use.
Researchers develop a non-toxic Cs2Ag0.6Na0.4In0.85Bi0.15Cl6 double perovskite scintillator for high-performance X-ray imaging with low doses, enabling high-resolution images in medical and industrial applications.
Two types of solar cells, perovskite and organic, were tested in space as part of the MAPHEUS 8 program, achieving efficiency levels of 25% and generating power under exceptional conditions. The results show promise for future aerospace applications, particularly for missions to the outer solar system.
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.
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.
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.
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 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.
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.
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.
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.
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 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.
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.
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.
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.