Articles tagged with Perovskites
Researchers fabricated large-area periodic lead halide perovskite nanostructures using a space-confined solution growth method. These structures were able to modulate reflection and control light emission angles, enabling low-threshold lasing and realization of lenticular printing laser displays.
Researchers at Rice University and Los Alamos National Laboratory have discovered a technology to make electron sources from halide perovskite thin films, efficiently converting light into free electrons. The cost savings come from abundant and inexpensive raw materials and a simpler manufacturing process.
Researchers created perovskite solar modules with improved stability and efficiency using a new fabrication technique that reduced defects. The modules showed high efficiencies for over 1000 hours, overcoming obstacles in scalability.
Researchers at Seoul National University and University of Pennsylvania developed highly efficient perovskite light-emitting diodes (PeLEDs) with an external quantum efficiency of 23.4%, surpassing previous records in PeLEDs and InP-based green emitting QD-LEDs.
Researchers have found a novel solution to stabilize the unstable black phase of a lead halide perovskite, which has potential for being cheaper and easier to manufacture than current silicon solar cells. The stable material remains resistant to deterioration and efficient at room temperature.
Scientists have developed a novel, doped-free hole-transporting layer for perovskite solar cells, achieving 21% power conversion efficiency and improved durability in humid air. The new material outperforms reference materials and protects the perovskite organic cell from degradation.
Researchers at Linköping University have developed efficient blue light-emitting diodes based on mixed halide perovskites, achieving stable emission in the deep blue to sky blue range. The new LEDs are made using the vapour-assisted crystallisation technique and exhibit an energy efficiency of up to 11%.
Researchers found that adding capsaicin to perovskite solar cells increases electron density and reduces nonradiative recombination, leading to more efficient and stable devices. The addition also promotes charge transport and suppresses heat losses.
Researchers have found that halide perovskite nanocrystals exhibit extraordinary energy transport properties, allowing them to travel longer distances than conventional nanostructures. This discovery has significant implications for the development of high-efficiency solar cells and light-emitting devices.
Researchers used X-ray laser to directly measure formation of polarons, fleeting distortions that affect material's behavior. The study reveals that polarons form large, expanding bubbles that travel along with electrons, potentially explaining why lead hybrid perovskites achieve high efficiencies in solar cells.
Researchers at HPSTAR have discovered a universal relationship between regulating off-centering distortion and maximizing photoluminescence in halide perovskites. By applying high pressure, they achieved optimal PL performance, ten-fold enhancement, and new paths to high-performance optoelectronic materials.
Researchers at Helmholtz-Zentrum Berlin have developed a perovskite/silicon tandem solar cell achieving a record 29.15% efficiency, surpassing previous records. The new value has been certified and is at the top of the entire Emerging PV category in the NREL chart.
Scientists at the University of Tsukuba investigated perovskite solar cell deterioration using electron spin resonance spectroscopy. They discovered that changes in spin states are linked to changes in hole transport and interfacial electric dipole layer formation, suggesting potential ways to prevent degradation.
Researchers at EPFL have developed a perovskite material that can detect gamma rays with high efficiency, meeting the requirements for simple, reliable, and cheap detectors. The material, made of methylammonium lead tribromide crystals, shows high clarity and can be grown from abundant and low-cost raw materials.
Researchers at Oregon State University have developed a breakthrough optical sensor that can mimic the human eye's ability to perceive changes in its visual field. The sensor uses ultrathin layers of perovskite semiconductors to detect light intensity changes, enabling it to prioritize signals from photoreceptors detecting movement.
A new detector using cesium lead bromide perovskite crystals has been developed to aid in the detection and identification of radioactive isotopes. The device achieves high resolution in energy detection, allowing for differentiation between legal and illegal gamma rays.
The study uncovered essential properties of ions in metal halide perovskites, which have a negative effect on the efficiency and stability of perovskite solar cells. The researchers found that all ionic defects meet the Meyer-Neldel rule, revealing fundamental information about ion hopping processes in perovskites.
Research team led by HPSTAR discovered that isotope effect can significantly suppress lattice distortion in hybrid perovskites, leading to enhanced photoluminescence and structural robustness. This breakthrough suggests a new path for designing more stable photovoltaic materials with superior performance.
This study demonstrates CsPbBrI2 perovskites with improved optoelectronic performance through secondary grain growth functionalization. The resulting devices exhibit ultra-low energy loss, higher carrier mobility, and record PCEs under various light sources.
Researchers develop rapid-spray plasma processing technology to produce stable and efficient perovskite solar cells at record-breaking speeds. The new method enables mass production of perovskite modules with high power conversion efficiency and low costs, potentially transforming the solar industry.
Researchers at POSTECH developed organic spacer molecular additive to improve perovskite solar cells' photoelectric efficiency and stability. The new material reduces internal defects and increases moisture resistance, achieving 21.3% efficiency and maintaining over 80% of initial performance under humid conditions.
Researchers developed a stable oxide scaffold for perovskite solar cells, allowing for easy removal and replacement of the material while maintaining performance. The new design achieved around 11.08% power conversion efficiency upon perovskite replacement.
The study found that molecular conformation affects charge carrier mobility and broadband emission in 2D organic-inorganic hybrid perovskites. The researchers discovered a strong correlation between the gauche defect, local chain distortion of organic cations and in-plane mobility reduction.
A team at HZB explores compositions of CsPb(BrxI1?x)3 for their potential to improve the stability and efficiency of solar cells. The study reveals tunable optical band gaps between 1.73 and 2.37 eV, making these mixtures suitable for multi-junction solar cell applications.
Scientists have successfully controlled the composition of perovskite ions in hybrid organic-inorganic nanocrystals, maintaining their morphology and light-emitting efficiency. This breakthrough enables the synthesis of perovskites with varying compositions, advancing the development of efficient solar cells and light-emitting devices.
Oregon State University researchers have made a key advance in printing circuitry on wearable fabrics using inkjet printing and perovskite materials. The breakthrough enables the direct application of circuitry onto cloth at lower processing temperatures, potentially solving the trade-off between performance and fabrication costs.
Scientists at KAUST create a perovskite ink suitable for mass production using slot-die coating, improving solar cell efficiency to up to 21.8%. The ink can also be coated onto silicon to produce tandem solar cells capturing even more of the Sun's energy.
Scientists at Linköping University develop a lead-free magnetic double perovskite with interesting optoelectronic properties, opening the possibility of coupling spintronics with optoelectronics. The new material exhibits a magnetic response at temperatures below 30 K.
A new technique allows reliable atomic-resolution images of hybrid photoactive perovskite thin films, unlocking insights into their atomic makeup and properties. The breakthrough enables researchers to study grain boundaries and crystal defects with unprecedented precision.
Researchers developed feasible approaches for durable perovskite photovoltaics by addressing internal instability, chemical degradation, and environmental factors. Compositional engineering and bonding passivation are promising methods to improve device durability.
Researchers at FSU investigated perovskite materials to improve their stability under real-world conditions. They found that adding cesium increases the material's stability and performance under light and elevated temperatures.
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 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 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 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.
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.
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.
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.