Articles tagged with Perovskites
Researchers have developed a chemical variation that significantly improves the stability of perovskite thin films in solar cells, achieving efficiencies of up to 24.6%. The new coating, b-pV2F, wraps around individual microcrystals like a soft shell, reducing thermal stress and increasing efficiency.
Researchers developed a technique that introduces a phosphonic acid-functionalized fullerene derivative and a redox-active radical polymer to strengthen the perovskite crystal structure and increase conductivity. This approach improved the stability of perovskite solar cells, achieving efficiencies comparable to traditional solar cells.
Researchers discuss non-fused ring electron acceptors (NFREAs) to improve organic solar cell performances, balance efficiency and cost, and provide guidance for material design. NFREAs simplify synthesis processes while achieving high reaction yields and planarity.
Researchers have developed a novel substrate boosting square-tensile-strain, promoting four-variant spontaneous polarization and defect-dipoles. This breakthrough enables reversibly controlled ternary polar states and ferroelectric bias.
Researchers at City University of Hong Kong have developed a lead-free perovskite photocatalyst for highly efficient solar energy-to-hydrogen conversion. The study uncovers the interfacial dynamics between halide perovskite molecules and electrolytes, enabling better photoelectrochemical hydrogen generation.
Researchers identify the (100) facet as prone to degradation, while the (111) facet is more stable and resistant to moisture and heat. By using facet engineering, they develop strategies to grow the stable (111) facet, leading to exceptionally stable perovskite films.
KAUST researchers have designed and built novel organic scintillator materials for detecting X-rays at low doses, overcoming stability issues with existing ceramic or perovskite materials. The new approach uses heavy atoms to improve X-ray absorption capability and exciton utilization efficiency.
Scientists have created a novel approach to produce phase-pure quasi-2D Ruddlesden–Popper perovskites, enabling highly efficient and spectrally stable deep-blue-emissive perovskite LEDs. The rapid crystallization method yields high-performance devices with an emission wavelength centered at 437 nm.
Researchers explore interfacial engineering to improve the stability and performance of flexible perovskite solar cells. By modifying interfaces, they can passivate defects, control stress and oxidation, and enhance charge extraction and transport.
Researchers developed a method to improve power conversion efficiency and stability of pure iodide and mixed-halide perovskites by using two alkylammonium halide modulators. This approach substantially reduces drops in power-conversion efficiency and retains about 80-90% of initial efficiencies after continuous operation.
Researchers have developed a novel near-infrared light detection method using core-shell lanthanide nanoparticles to convert weak near-infrared light to visible light with high efficiency. This achievement promotes the proposal of a new resource- and energy-saving near-infrared light detection method, improving optical sensor sensitivi...
Researchers at Exciton Science have created perovskite solar cells with 21% efficiency, the best results ever recorded for a non-halide lead source. The novel use of lead acetate enables scalable and industrial-scale manufacturing.
Researchers at Oxford University and Exciton Science created stable perovskite solar cells with comparable stability to commercial silicon photovoltaics. The new synthesis process led to thin films of greater quality, reduced defects, and enhanced stability.
Scientists discovered an effective way to passivate deep-level traps in perovskite solar cells, significantly improving power conversion efficiency. The breakthrough involves a new in-situ protonation process that reduces minority carrier traps.
Researchers at the University of Surrey have demonstrated a way to regulate and reduce unwanted energy loss in perovskite solar panels, improving their efficiency and stability. The breakthrough has exciting implications for powering spacecraft and interstellar probes.
This study employs machine learning to analyze existing experimental results and predict the device performance of metal halide perovskite solar cells. The authors applied shapley additive explanations (SHAP) analysis to understand the correlations between fabrication processes, composition, and device performance.
Researchers used a terahertz scanning probe microscope to investigate Methylammonium Lead Iodide perovskite, a potential alternative to silicon in solar cells. The team found significant variation in light scattering along grain boundaries, shedding light on the material's degradation issue.
A team of researchers from the University of Toronto and Northwestern University has developed an all-perovskite tandem solar cell with extremely high efficiency and record-setting voltage. The prototype device demonstrates the potential of this emerging technology to overcome key limits associated with traditional silicon solar cells.
Scientists from Ural Federal University have proposed a new material for transporting electrons in perovskite solar cells, achieving an efficiency of 12%. The new material is twice as cheap, easier to produce, and has technological advantages over current electron-transport materials.
Researchers at HZB develop tandem solar cells using perovskite and silicon, achieving record-breaking efficiencies of up to 29.8%. Customized nanotextures improve perovskite semiconductor materials by reducing reflection losses and parasitic absorption.
Researchers have developed a vertically oriented 2D Ruddlesden–Popper phase perovskite passivation layer for efficient and stable inverted PSCs. The new design achieved a champion PCE of 21.4% in devices with outstanding humidity and thermal stability.
Physicists have developed a new photonic system with electrically tuned topological features, constructed of perovskites and liquid crystals. The system can be used to create efficient and unconventional light sources, mimicking the spin-orbit coupling previously observed in semiconductor physics at cryogenic temperatures.
Researchers developed a durable perovskite solar cell capable of generating electricity for over 1,000 continuous hours with an efficiency of more than 20%. The team improved durability by creating a water-repellent interface between the electron and hole transport layers.
Researchers successfully developed cost-effective and high-performance perovskite solar cells using a copper electrode, reducing the performance limitations of traditional silver electrodes. The 'buckets effect' approach allows for balanced energy differences at both the perovskite/HTL and HTL/Cu interfaces, significantly improving cha...
Researchers at Queen Mary University of London have invented a new application of perovskites as single-crystal optical fibers with exceptional stability, efficiency, and durability. These high-performance fibers could revolutionize broadband delivery, improve medical imaging, and even enable solar-powered clothing.
Researchers at Rice University have created stable and efficient halide perovskite solar cells by finding the right solvent design to apply a 2D top layer on top of a 3D bottom layer. The new method achieves high power conversion efficiencies, comparable to commercially available solar cells, while maintaining stability.
Scientists at Linköping University have made a breakthrough in developing stable high-efficiency perovskite solar cells. They created an ion-modulated radical doping method for Spiro-OMeTAD, which eliminates the trade-off between efficiency and stability.
Researchers at NREL have developed a highly efficient and stable perovskite solar cell, achieving a certified stabilized efficiency of 24% under 1-sun illumination. The innovative design enables the cell to retain 87% of its original efficiency after 2,400 hours of operation.
The TU Wien team has created a catalyst that can convert CO2 and methane into synthesis gas without the formation of carbon nanotubes. This approach, called dry reforming, has the potential to convert climate-damaging greenhouse gases into valuable products.
A homemade microspectrometer invented by Dr. Jamie Laird enables scientists to image defects in perovskite solar cells, improving stability and efficiency. This innovative technique has the potential to revolutionize next-generation photovoltaics, including space missions.
Researchers introduce intrinsic strains into thermoelectric devices through mechanical deformation, enhancing stability and efficiency. The power generation efficiency reaches up to 12% in mixed halide perovskites under these conditions.
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.