Articles tagged with Perovskites
Researchers at KAIST introduced a new hybrid device structure with organic photo-semiconductors that expand the absorption range to near-infrared, improving power conversion efficiency. The device achieved a high internal quantum efficiency of 78% in the near-infrared region and improved stability for over 1,200 hours.
A new hole-transport material facilitates charge transfer and demonstrates high charge mobility in perovskite solar cells. However, the devices show reduced current due to an energetic barrier at the perovskite/HND-2NOMe interface, hindering performance.
Researchers at Rensselaer Polytechnic Institute developed a polymer film infused with a special chalcogenide perovskite compound that produces electricity when squeezed or stressed. The material has shown promising results, including powering LED lights and potentially being used in machines, infrastructure, and biomedical applications.
Computer simulations point the way towards better solar cells by gaining crucial insights into what influences properties of 2D perovskite materials. Researchers have discovered that the choice of organic linkers can directly control how atoms in surface layers move, affecting optical properties.
Scientists developed a technique to engineer LHPs with controlled size distribution of quantum wells, improving efficiency and stability in LEDs and lasers. By controlling nanoplatelets' growth, they achieved excellent energy cascades, enhancing photovoltaic performance and stability.
Researchers at City University of Hong Kong have developed a new fabrication technique for perovskite solar cells, achieving power conversion efficiencies over 25% and 95% efficiency after 2,000 hours. This simplification makes industrial production more cost-effective and paves the way for more reliable and efficient solar cells.
Researchers have developed femtosecond laser-induced perovskite precipitation technology, enabling high-precision patterning of perovskite materials. This technology has shown great potential in anti-counterfeiting and information storage, as well as optical displays and micro-LEDs.
A new synthesis method, template synthesis, enables the creation of multilayered perovskites with unique ferroelectric properties. The number of layers affects the material's behavior, switching between conventional and indirect ferroelectricity models.
A team of GIST researchers developed a new defect passivation strategy for polycrystalline perovskites, leading to improved power conversion efficiency and long-term operational stability. The strategy uses a chemically identical polytype of perovskite to suppress defects in the crystal structure.
Researchers at Seoul National University developed ultra-high efficiency perovskite nanocrystal LEDs by incorporating conjugated molecular multipods to strengthen the lattice and reduce dynamic disorder, leading to improved luminescence efficiency. This achievement is expected to significantly accelerate the commercialization of next-g...
Scientists have created perovskite crystals with predefined shapes to serve as waveguides, couplers, and modulators in integrated photonic circuits. The edge lasing effect is associated with exciton-polariton condensates, which exhibit nonlinear effects, enabling applications in quantum computing.
Researchers find undoped Spiro-OMeTAD outperforms doped devices under low-light conditions due to reduced series resistance. Devices show improved stability and reliability in these conditions, challenging the need for doping.
A research team at City University of Hong Kong has developed next-generation printable perovskite solar cells with higher efficiency, stability, and lower production costs. These cells can be manufactured using a 'printing' process, reducing energy consumption and processing steps compared to traditional silicon-based solar cells.
Researchers at HKUST developed a molecular treatment that enhances perovskite solar cells' efficiency and durability. The breakthrough identified critical parameters for halide perovskites, leading to high open-circuit voltages and remarkable operational stability.
Researchers developed a coating technique that increases the efficiency of monolithic tandem cells made of silicon and perovskite, while maintaining long-term stability. The coating uses thiophenethylammonium compound to smooth out surface defects, resulting in a high efficiency rate of nearly 31%.
Researchers at Chung-Ang University have discovered an additive that enhances the efficiency of perovskite solar cells, resulting in a record-breaking 12.22% efficiency. The additive, 4-phenylthiosemicarbazide, improves stability and reduces defects, paving the way for more accessible and long-lasting solar panels.
Researchers have successfully transformed existing optoelectronic devices, including LEDs, into spintronics devices by injecting spin-aligned electrons without ferromagnets or magnetic fields. The breakthrough uses a chiral spin filter made from hybrid organic-inorganic halide perovskite material, overcoming a major barrier to commerci...
Researchers at Kaunas University of Technology (KTU) develop materials to improve indoor photovoltaic cells, generating electricity even in low-intensity light. The innovation utilizes Internet of Things technologies to efficiently regulate device operation and optimize energy consumption.
Researchers proposed a design strategy to mitigate nonlinear responses in polycrystalline metal halide perovskite X-ray detectors, addressing issues like 'delay' and 'ghosting'. The study demonstrated high-resolution X-ray imaging with suppressed ghosting contrast and top sensitivity for similar X-ray energies among polycrystalline per...
A new living passivator has been developed to improve the stability and efficiency of perovskite solar cells. The coating can dynamically heal defects caused by environmental stressors like water and heat, improving operational stability for over 1,000 hours at high temperatures.
A research team at HKUST discovered surface concavities on individual crystal grains of perovskite thin films, affecting film properties and reliability. They pioneered a new method to remove these concavities, resulting in improved efficiency retention under various tests.
Scientists develop stable and efficient hybrid light-emitting diodes combining perovskite and organic technologies. The new LEDs boast a narrow emission spectrum, high luminance, and an operational half-lifetime exceeding 42,000 hours.
Scientists at the National Renewable Energy Laboratory have made advances in optoelectronics by integrating a III-V semiconductor optoelectronic structure with a chiral halide perovskite semiconductor. This breakthrough enables control over electron spin, which can be used to increase data processing speeds and decrease power consumption.
Researchers at the University of Texas at Austin have discovered topological vortices in polaron quasiparticles that contribute to generating electricity from sunlight. The discovery can help develop new solar cells and LED lighting with exceptional energy conversion efficiency.
Researchers at Rice University have made a breakthrough in synthesizing formamidinium lead iodide (FAPbI3) perovskite solar cells into ultrastable, high-quality photovoltaic films. The overall efficiency of the resulting FAPbI3 solar cells decreased by less than 3% over 1,000 hours of operation.
The Purdue method creates layered perovskite nanowires with exceptionally well-defined and flexible cavities that exhibit unusual optical properties. These nanowires show promising applications in nanophotonics and nanoelectronics, including anisotropic emission polarization and efficient light amplification.
Researchers have developed a new perovskite-based camera inspired by the structures and functions of bird's eyes, specializing in object detection. The camera features an artificial fovea and multispectral image sensor that detects UV and RGB light, providing greater motion detection capabilities than conventional cameras.
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.