Articles tagged with Perovskites
KAUST researchers created a more efficient solar-cell module by redesigning its optical design, reducing power conversion efficiency loss in real-world applications. The new module achieved an efficiency increase from 25.7% to 26.2% due to refractive-index engineering.
Researchers have developed a prototype device that could replace traditional air conditioners with solid refrigerants, reducing greenhouse gas emissions and climate change. The system uses pressure changes to cycle between solid and liquid states, efficiently cooling spaces without leaks.
Researchers have found a new method to process formamidinium-based perovskite films, relieving limitations by using ammonia treatment. This approach enables the creation of highly uniform films with improved power conversion efficiency.
Scientists at KAUST have successfully created a semiconductor material with multiple exciton generation, resulting in a photocurrent quantum efficiency of over 100%. This breakthrough could lead to improved solar cells and light-harvesting applications.
Researchers at Surrey's Advanced Technology Institute have developed a renewable and rechargeable battery prototype that can charge smart wearables in just seconds using sunlight. The system, which combines zinc-ion batteries with perovskite solar cells, enables wearables to operate continuously without plug-in charging.
Researchers from Dalian Institute of Chemical Physics fabricate high-performance perovskite submodules with stability and outstanding photovoltaic performance. They achieve this using a surface redox engineering strategy, eliminating the local de-wetting problem and enhancing electronic properties.
Inserting magnesium fluoride between perovskite and electron-transport layers reduces charge recombination and enhances performance, leading to a 50 millivolt increase in open-current voltage and a stabilized power conversion efficiency of 29.3 percent.
The study analyzes the structure and composition of Ca2(Mn,Ti)O4 using XRD, Raman spectroscopy, and DFT to understand how Ti impurities enhance its near-infrared reflectivity. The findings provide a general recipe for understanding the properties of complex perovskite ceramics.
University of Arizona researchers Erin Ratcliff and Roger Angel are working on scaling paper-thin solar technology using perovskites. They aim to develop a low-cost quality control method to detect defects during manufacturing, enabling the production of robust and high-quality perovskite-based photovoltaics.
Scientists at KIT create a prototype for fully scalable all-perovskite tandem solar modules with an efficiency of up to 19.1 percent, enabling commercial viability through optimized light paths and established industrial coating methods.
Researchers at Rensselaer Polytechnic Institute have successfully controlled electron spin at room temperature, a crucial step towards developing more efficient and faster devices. The discovery uses a unique ferroelectric van der Waals layered perovskite crystal to harness the Rashba or Dresselhaus spin-orbit coupling effect.
A recent study found that perovskite-on-silicon solar PV modules have 6-18% less environmental impact than traditional silicon modules over their 25-year lifetime. The tandem technology's higher power conversion efficiency compensates for its additional material and production costs.
Researchers developed a simple and versatile nanoparticle ink made from tin oxide, which can be printed at relatively low temperatures using microwave technology. This ink enables the mass production of high-efficiency perovskite solar cells with power-conversion efficiencies of up to 18%.
Scientists from the University of Surrey have created a method for producing high-quality, low-cost solar cell building blocks using perovskite ink. This breakthrough could pave the way for widespread adoption of perovskite-based solar panels, which are more efficient and lighter than traditional silicon cells.
The study achieved an efficiency of nearly 25 percent, surpassing previous values, by combining perovskites with CIS. The hybrid material enables the production of light and flexible tandem solar cells suitable for various applications.
Researchers at the University of Surrey have made a breakthrough in producing more efficient solar panels by focusing on the chemistry of perovskite materials. The new method, developed in collaboration with other institutions, increases efficiency and stabilizes energy deficiency over time.
Scientists at NREL have developed a tin-lead perovskite cell with a 25.5% efficiency, outperforming previous records by several hundred hours. The new cell uses additives to improve carrier lifetime and reduce defect density, leading to enhanced stability and voltage generation.
Researchers have discovered a way to create devices that mimic natural photosynthesis, producing fuels like hydrogen instead of sugars. The breakthrough uses bismuth oxyiodide, a non-toxic semiconductor material that can produce clean hydrogen from water over weeks.
Researchers anchored Mo2C nanoparticles onto MAPbI3 to enhance photocatalytic activity for hydrogen evolution. The composite exhibits superior performance, surpassing pristine MAPbI3 and Pt-deposited MAPbI3.
Researchers at NTU Singapore have developed a flexible and durable fabric that harnesses energy from human movements, providing a potential solution for wearable power sources. The fabric generates enough electricity to light up LEDs and charge capacitors, demonstrating its potential for use in smart textiles and wearable electronics.
Scientists discovered that tiny defects in perovskites, cheaper alternative materials for solar cells, also cause structural changes leading to degradation. By controlling the formation of these detrimental phases, researchers can improve performance and stability of devices, bringing them closer to commercialization.
Scientists at Seoul National University created highly efficient large-area perovskite light-emitting diodes with an external quantum efficiency of 22.5%. The breakthrough technology uses colloidal perovskite nanocrystals, overcoming previous limitations in uniformity and mass production.
A new method for creating key components of solar cells, X-ray detectors, and LEDs uses water to control the growth of phase-pure perovskite crystals. This approach allows for precise tuning of crystal structures at room temperature.
Researchers from KAUST have designed an all-inorganic halide-perovskite polymer-fiber-photodetector that can detect light in the green region (around 510 nm), enabling fast underwater optical communications. The system offers a 3dB bandwidth of 13.1 MHz, allowing data transmission speeds of up to 152.5 Mbit/s.
Researchers have developed a new protocol for testing perovskite solar cells, which are radiation-hard and durable enough for use in space. The study found that perovskites are more resistant to damage from radiation than previously thought, making them suitable for applications such as lunar installations and satellite missions.
Researchers have tested experimentally two common hypotheses about the transport properties in perovskites, eliminating them as possible explanations for superior charge transport. Measurements by Maryam Sajedi did not show a giant Rashba effect or a postulated increase in effective mass for CsPbBr3 and MAPbBr3 samples.
Scientists have successfully developed lead-free bismuth halide perovskites with broadband emission, overcoming toxicity and instability issues of traditional lead-based materials. The new material exhibits high efficiency and stability, paving the way for potential applications in artificial lighting and displays.
A research team revealed the mechanism of oxygen activation on Barium-containing perovskite materials. The study discovered that BaO/BaO2 nanoparticles precipitated on the surface of Ba-containing materials under high-temperature oxygen-rich conditions had ultra-high activity for oxygen activation.
A research team from City University of Hong Kong and Imperial College London developed a new strategy for highly efficient and stable perovskite solar cells using ferrocene molecules. The breakthrough invention can achieve efficiency of up to 25% while maintaining stability, making it a promising alternative to silicon solar cells.
Researchers have developed perovskite solar cells with improved efficiency and stability thanks to the addition of ferrocene layers. The devices can now reach 25% efficiency, approaching traditional silicon cells, and maintain over 98% of their initial performance after 1,500 hours.
Researchers have created a new solvothermal method to produce single-crystalline titanium dioxide nanoparticles that can enhance the scalability of perovskite solar cells. The resulting cells demonstrated improved power-conversion efficiency and operational stability, with values reaching up to 24.05% and 84.7% fill factor.
Scientists at KAUST have studied charge carrier behavior in perovskite thin films using laser pulses and terahertz radiation. They found that increased density of charge carriers narrows the energy gap for electrons to be excited by light, and charge carriers become more localized at higher densities.
A new machine learning-based system developed by MIT and Stanford researchers enables the rapid development of optimized production methods for perovskite-based solar cells. The system has already led to the manufacturing of cells with an energy conversion efficiency of 18.5 percent, a competitive level for today’s market.
Researchers at the University of Cologne and the University of Wuppertal have developed a tandem solar cell that achieves an unprecedented 24% efficiency, outperforming previous records. The innovative design combines organic and perovskite-based absorbers with an indium oxide interconnect to minimize losses.
Researchers at Kyoto University have discovered a scaling law that determines high-order harmonic generation in the perovskite material Ca2RuO4. The phenomenon, which was first observed in atomic gas systems, has been found to be highly dependent on temperature and gap energy.
Researchers at NC State University discovered that built-in thermal shock absorbers in perovskites protect dipoles from thermal interference, enabling room-temperature superfluorescence. The 'Quantum Analog of Vibration Isolation' mechanism creates a filter that allows synchronized emission of photons.
Researchers at NCCR MARVEL identified two new cubic prototypes that exhibit energetically and dynamically stable paraelectric behavior, providing a microscopic representation of the material's properties. The discovery has significant implications for the study of ferroelectricity, superconductivity, and other functional materials.
This special issue of Energy Material Advances highlights recent progress in synthesizing and tuning perovskite nanocrystals and other emerging nanocrystal materials. Research focuses on fundamental understanding of doping, synthesis, and spectroscopy, as well as applications in solar cells and light-emitting diodes.
Researchers developed a passivation strategy to improve the performance of quasi-2D perovskite light-emitting diodes by suppressing thermal-induced fluorescence quenching. The strategy, using alkyl phosphates as passivation functional groups, resulted in higher EQE peak values and improved device stability at high temperatures.
A research team from POSTECH has developed a method to print high-performance p-type semiconductor transistors using inorganic metal halide perovskite, exhibiting high hole mobility and current ratio. This technology enables solution-processed perovskite transistors to be simply printed as semiconductor-like circuits, paving the way fo...
Researchers at NC State University have developed a 'self-driving lab' that uses artificial intelligence and fluidic systems to advance our understanding of metal halide perovskite nanocrystals. The technology can autonomously dope MHP nanocrystals, adding manganese atoms on demand, allowing for faster control over properties.
Researchers at Politecnico di Milano developed a new approach using additives that form halogen bonds with halide ions in perovskites, improving stability and efficiency. This technique enables the creation of hydrophobic and water-repellent perovskites, blocking trap states and increasing electrical energy conversion.
Researchers found that a common surface treatment creates an electron-rich surface that destabilizes the perovskite solar cells, leading to degradation. A new method using positively and negatively charged ions resolves this issue, allowing for more stable solar cells with up to 87% efficiency retention.
The researchers successfully fabricated large-area sky-blue perovskite light-emitting diodes (PeLEDs) with a high external quantum efficiency of 10.3%. The blade-coating method enabled the production of uniform films with small grains, leading to improved luminescence uniformity and brightness.
Researchers have discovered a surprisingly soft mineral, davemaoite, that plays a crucial role in the Earth's recycling of rocks. The study suggests that davemaoite is around 1,000 times softer than other minerals in the mantle, and its mechanical properties can help explain how earthquakes and volcanoes occur.
Researchers at KAUST developed a multilayered perovskite-based film that shields high-performance solar cells from extreme heat and moisture while boosting their long-term stability. The 2D perovskite capping layer improves the resistance of unsealed devices against thermal stress and moisture.
Researchers improve solar cell performance predictions by analyzing terahertz and microwave spectroscopy data, enabling more accurate assessments of material quality. This advancement can quickly test new semiconducting materials for their potential suitability.
The KAUST team has created a flexible and efficient scintillation film using lead-free metal halides, detecting X-rays at levels 113 times lower than standard medical imaging doses. This breakthrough enhances medical, industrial and security X-ray imaging, offering significant improvements in spatial resolution.
Researchers have successfully combined perovskite with silicon in a tandem cell, achieving an efficiency of 21.3%. The team estimates the PCE to be 29.5%, with potential for further improvement through surface optimization.
KAUST researchers develop an artificial electronic retina that mimics human vision and recognizes handwritten numbers with high accuracy. The retina uses perovskite nanocrystals to detect light intensity via capacitive change, offering a more energy-efficient alternative to existing systems.
Researchers demonstrate a two-terminal tandem solar cell with enhanced efficiency through spectrum splitting, achieving a 5-6% gain in absolute efficiency. The design uses planar and Lambertian spectral splitters to effectively distribute sunlight among the top and bottom cells.
Researchers propose a novel 2D/3D core-shell structure to overcome defects in tin-based metal-halide perovskites. The hybrid arrangement eliminates series resistance issues and high carrier density problems, enabling improved performance in planar devices.
Researchers developed a low-cost and simple method to produce perovskite photovoltaic materials on an industrial scale, paving the way for creating lightweight and flexible solar cells. The new technique reduces waste and toxic byproducts associated with manufacturing perovskite photovoltaics.
Scientists develop blue LEDs based on metal halide perovskite with asymmetrical bridges to hold layers together, creating a more stable structure. This breakthrough solves the halide segregation problem and brings perovskite LEDs closer to commercialization.
A research group from the Dalian Institute of Chemical Physics used non-toxic GeX4 as precursors to synthesize Pb-free and Pb-based PNCs with improved optoelectronic quality. They attributed this success to better control over halide ion release, resulting in regular crystal surfaces with fewer point defects.
Researchers replaced traditional electron-transport layers with quantum dot layers in perovskite solar cells, resulting in record power-conversion efficiencies of up to 25.7%. The use of quantum dots also enabled high operational stability and scalability, making them a promising solution for large-scale solar energy production.
The NUS research team achieved a power conversion efficiency of 23.6% in their perovskite/organic tandem solar cells, approaching that of conventional silicon solar cells. This breakthrough paves the way for flexible, light-weight, and low-cost photovoltaic cells suitable for various applications.
Researchers at IAPP discovered that photon recycling improves light emission efficiency by a factor of ~5, significantly increasing photovoltage. This process enables perovskite solar cells to approach the upper limit of 34% efficiency in single-junction semiconductors.
KTU researchers have developed new materials that significantly improve the stability and efficiency of perovskite solar cells. The new materials use a passivation method to prevent degradation, achieving an efficiency of 21.4% in record-breaking solar modules.
Daniele Cortecchia wins ERC Starting Grant for innovative photoluminescent materials research, focusing on perovskite synthesis and application in photonics. The project aims to develop new methods for creating tunable optical properties.