Articles tagged with Perovskites
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.
A tandem approach for better solar cells involves combining perovskite-based photovoltaics with traditional silicon to minimize losses and increase efficiency. The technology has shown promise in laboratory settings but faces significant practical challenges, including reliability and scalability issues.
Researchers have developed a new method to manufacture perovskite solar cells, which can convert electricity more efficiently than current silicon panels. The addition of dimethylammonium formate enables coating outside the small box, increasing efficiency and stability, with potential applications in electric vehicles and other devices.
Researchers at Kaunas University of Technology developed a new material for perovskite solar cells, which exhibits better power conversion efficiencies and operational stability. The material, synthesised through polymerisation, can be used in both regular and inverted architecture solar cells.
Researchers from USTC and University of Cambridge devised a novel strategy to boost blue perovskite LED efficiency by controlling perovskite phase distribution, defect states, and ion migration. This approach resulted in high-efficiency and stable blue LEDs with a peak external quantum efficiency of 21.4%.
Recent research on direct laser writing (DLW) on halide perovskites reveals six interaction mechanisms between laser and perovskite. The technique's great potential for various applications is attributed to the flexibility of laser parameters and perovskite properties.
The National University of Singapore (NUS) team engineered a new cyanate-integrated perovskite solar cell that achieves a certified world-record power conversion efficiency of 27.1%, surpassing other multi-junction solar cells. The triple-junction perovskite/Si tandem solar cell remains stable and efficient even after extended testing.
A team of researchers from Pusan National University developed a method to enhance the stability of perovskite solar cells using crown ether B18C6. This approach resulted in improved power conversion efficiency and resistance to moisture, addressing key issues such as lead leakage and degradation due to environmental factors. The study...
A team of researchers has discovered ways to optimize efficiency and control degradation in perovskite solar cells by engineering their nanoscale structure. The study provides new insights on how to make high-efficiency perovskite solar cells and offers a roadmap for improving their performance.
Researchers at UNIST have developed a scalable and efficient photoelectrode module for green hydrogen production, overcoming challenges of efficiency, stability, and scalability. The team's innovative approach achieved unprecedented efficiency, durability, and scalability in producing green hydrogen using solar energy.
Researchers at São Paulo State University developed a method to enhance perovskite solar cells using MXene Ti3C2Tx, increasing power conversion efficiency by 15% and stability by three times. This breakthrough has promising implications for large-scale industrial production of stable high-performance solar cells.
A groundbreaking research breakthrough has led to the development of the world's most efficient quantum dot (QD) solar cell, retaining its efficiency even after long-term storage. The newly-developed organic PQD solar cells exhibit both high efficiency and stability simultaneously.
Researchers developed highly efficient and stable perovskite light-emitting diodes using a solvent sieve method, achieving an operating lifetime of over 5.7 years and a record high external quantum efficiency of 29.5%. The study also demonstrated excellent stability in ambient air conditions.
Researchers developed a transmissive thin scintillator using perovskite nanocrystals to track and count single protons with exceptional sensitivity. The new detectors offer unparalleled sensitivity and could revolutionize proton therapy and radiography.
Perovskite quantum dots made brighter by surface treatment with phospholipids, enabling higher photon emission rates. Coherent coupling of exciton dipoles boosts superradiance, making the dots even brighter for quantum technologies.
Researchers create supramolecular ink, a game-changing technology for OLED display manufacturing, enabling more affordable and environmentally sustainable products. The material can also be used in wearable devices, luminescent art, and 3D printing.
Researchers developed a chemically protective cathode interlayer using amine-functionalized perylene diimide, which stabilizes perovskite solar cells. The novel solution-processed PDINN cathode interlayer achieved impressive performance with over 81% retention and record-high bias-free solar hydrogen production rate.
The study demonstrates the enhancement of light amplification in perovskite nanosheets, paving the way for advances in optoelectronics and other applications. The researchers achieved this by creating a patterned waveguide, which improved optical confinement and heat dissipation.
A novel transparent spectral converter, GdPO4-GC:Eu3+/Pr3+, absorbs UV photons and re-emits them as visible light, increasing photovoltaic devices' conversion efficiency. This technology shields PCs from UV damage and enhances their sensitivity to UV photons.
The study reveals that excited electrons in perovskites cause a shift towards increased symmetry in the crystal lattice. This attractive interaction between excitons could be exploited to enhance electron transport and improve solar cell performance.
Northwestern University researchers have created a new perovskite solar cell that achieves a National Renewable Energy Lab certified efficiency of 25.1%, surpassing earlier records. The breakthrough is made possible by a combination of two molecules, one addressing surface recombination and the other disrupting interface recombination.
Researchers developed a novel polycrystalline silicon tunnelling recombination layer that significantly enhances the efficiency of perovskite/tunnel oxide passivating contact tandem solar cells, achieving a remarkable 29.2% photoelectric conversion rate and high stability.
Researchers at NC State University developed an autonomous system called SmartDope to synthesize 'best-in-class' materials for specific applications in hours or days. It uses a self-driving lab to manipulate variables, characterize optical properties, and update its understanding of the synthesis chemistry through machine learning.
The researchers propose a hybrid organic–inorganic gas sensor design that enhances gas sensing performance while maintaining sensing speed. The proposed design outperforms conventional sensors in terms of chemical sensitivity to NO2, showcasing impressive durability and higher potential for long-term installation.
Researchers from Chinese Academy of Sciences propose homogenizing strategy to fabricate perovskite films for solar cells. The process increases conversion efficiency to 26.1%, tying the existing record. The method uses an additive to make up for difference in crystallization and phase transition rates, resulting in long-term stability.
Researchers have developed a new synthesis method that controls the temperature and duration of the crystallization process to produce 2D halide perovskite layers with ideal thickness and purity. This breakthrough improves the stability and reduces the cost of solar cells, making them a viable option for emerging technologies.
The CityU innovation has dramatically enhanced the thermal robustness of perovskite solar cells, retaining over 90% of efficiency even under high temperatures. This breakthrough could significantly broaden the utilisation of these cells and contribute substantially to combating the global climate crisis.
Scientists have developed perovskite photovoltaic cells with significantly improved optoelectronic properties using nanoimprinting method. The structure reduces optical losses and enables cheaper production on a large scale.
Researchers at City University of Hong Kong successfully morphed all-inorganic perovskites into various shapes at room temperature without compromising their functional properties. The findings demonstrate the potential of these semiconductors for next-generation deformable electronics and energy systems.
Researchers at Stanford University have synthesized a stable form of gold that has lost two negatively charged electrons, known as Au²⁺. This exotic chemical state is made possible by the use of halide perovskites, which hold promise for various applications including solar cells and electronics components.
Researchers have developed a new semiconducting material called multielement ink that can be processed at low temperatures, paving the way for more sustainable semiconductor industry. The breakthrough enables faster and lower-energy production of semiconductors, which could significantly reduce carbon emissions.
Researchers at University of Surrey's Advanced Technology Institute have made a breakthrough in creating more efficient and stable perovskite solar cells by coating metal halide perovskite with aluminium oxide. This development could help countries reach their net zero targets faster and make renewable energy cheaper.
A NREL-led research team identified accelerated testing protocols to understand perovskite solar cells' behavior under real conditions. The study found that high temperature and illumination are the most critical combination of stressors for predicting outdoor performance, with cells retaining over 93% of their maximum efficiency after...
Researchers at Pohang University of Science & Technology developed world-class perovskite transistors by combining three distinct perovskite cations, achieving high hole mobility and on/off current ratio. This breakthrough enables faster computing with lower power consumption.
Scientists have discovered a method for maintaining valley polarization at room temperature using transition metal dichalcogenides (TMDs) and chiral lead halide perovskites. This breakthrough could lead to the development of devices that store and process information in novel ways without the need for ultra-low temperatures.
Tandem solar cells combining silicon and perovskite technologies achieve higher efficiencies while strengthening stability. The connection protects the frail perovskite solar cell from voltage-induced breakdown.
Researchers at Linköping University develop a new type of quantum random number generator based on perovskite light emitting diodes, providing improved randomness and security. The technology has the potential to be cheaper and more environmentally friendly than traditional methods.
Researchers at Tokyo Institute of Technology have discovered a new strategy to stabilize the α-phase of α-FAPbI3, a promising solar cell material. By introducing pseudo-halide ions like thiocyanate into its structure, the team has successfully stabilized the α-phase, reducing its transition temperature and increasing its energy band gap.
By controlling the arrangement of multiple layers within crystals, researchers can tune the materials' optoelectronic properties and emit light of specific energies. This technique has significant implications for applications such as LEDs, solar cells, and lasers.
A recent publication in Science reports on improvements in silicon-perovskite tandem cells, achieving a record-breaking 32.5% efficiency. The development of these high-efficiency solar cells was led by Lithuanian researchers from Kaunas University of Technology.
Dong's research group develops unique nanocrystals that can emit light at room temperature with high efficiencies, targeting scalable quantum communication devices. By customizing the surface lattice of these nanocrystals, they aim to enhance single photon emission properties.
Researchers have developed a highly efficient organometal halide perovskite photoanode that suppresses internal and external losses associated with photoelectrochemical water splitting, enhancing reaction kinetics. The new design achieves an unprecedented applied bias photon-to-current conversion efficiency of 12.79%.
Stanford researchers developed a technique to boost PeLEDs' brightness and efficiency, but it comes at the cost of reduced lifespan. The additive doubles efficiency and triples brightness, extending lifespans from under 1 minute to 37 minutes.
Researchers from Tokyo Institute of Technology have successfully synthesized high-purity SrVO2.4H0.6 and Sr3V2O62H0.8 perovskite oxyhydrides using a novel high-pressure flux method, opening up new possibilities for catalysts and lithium-ion battery electrodes.
Researchers at North Carolina State University have developed a new robot called RoboMapper that can conduct experiments more efficiently and sustainably to develop new semiconductor materials. The robot automates the process of testing multiple samples simultaneously, reducing time and energy consumption by nearly 10 times.
Researchers investigated the fatigue behavior of 2D hybrid organic-inorganic perovskites (HOIPs), discovering they can survive over one billion cycles, outperforming most polymers under similar loading conditions. The study provides insights into designing and engineering these materials for long-term mechanical durability.
Researchers have made significant breakthroughs in high-speed photonic sources using metal-halide perovskites, promising to increase bandwidths into the gigahertz levels. The technology has vast potential for future data communication, IoT devices, and other emerging services.
Rice University engineers have created a device that converts sunlight into hydrogen with unprecedented efficiency, opening up new possibilities for clean energy and sustainable fuel production. The innovative technology uses halide perovskite semiconductors and electrocatalysts in a single, durable device.
Researchers at NREL have developed bifacial perovskite solar cells that capture both direct and reflected sunlight, resulting in efficiencies of up to 23% on the front side and 91-93% on the back. This could lead to higher energy yields and lower costs over time.
Researchers demonstrate that perovskite solar cells damaged by proton radiation in low-earth orbit can recover up to 100% of their original efficiency via thermal vacuum annealing. The study used ultrathin sapphire substrates and found that fluorine diffusion from the dopant causes defects, which can be reversed by heat treatment.