Articles tagged with Organic Semiconductors
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.
A Clemson team created a novel metal-organic framework with combined conduction pathways, outperforming traditional MOFs. This breakthrough could advance modern electronics and energy technologies.
Researchers at Pohang University of Science & Technology (POSTECH) developed a technology for high-performance organic polymer semiconductors that exhibit both stretchability and electrical functionality. The molecular brake prevents slipping under stretching conditions, preserving up to 96% of electrical performance.
Researchers investigated LECs made from Super Yellow and found that increasing voltage applied resulted in increased emission and ESR signals. Theoretical analysis showed holes and electrons being electrochemically doped into the material, leading to a correlation with luminance increase.
Researchers from the ARC Centre of Excellence in Exciton Science have demonstrated a new chip-scale approach using OLEDs to image magnetic fields, offering a potential solution for portable quantum sensing. This technique enables small, flexible, and mass-producible sensing without requiring input from a laser or cryogenic temperatures.
Researchers have developed a new host material that enhances the efficiency of organic light-emitting diodes (OLEDs) by reducing concentration quenching and increasing thermally activated delayed fluorescence. This breakthrough could lead to improved displays, lighting, and medical treatments.
Cooperative transitions occur when molecules shift their structure in synchrony, like a row of dominoes flowing seamlessly to the floor. The collaborative method is fast, energy-efficient, and easily reversible, helping living systems operate quickly and efficiently.
Researchers at Pusan National University have developed a novel solvent-resistant hole injection layer material, enabling the creation of efficient solution-processed OLED devices. The material exhibits high mobility and excellent film-forming properties, leading to improved efficiency and lifetime compared to existing materials.
The study explores the impact of counteranions on stacked ion pairs, leading to variations in energy and orientation. The researchers developed a diverse set of assemblies with tunable properties by incorporating alkyl groups into positively charged squarylium dyes.
A new form of thin-film device technology using alternative semiconductor materials could contribute to a more sustainable IoT. Wireless power harvesting from the environment using photovoltaic cells and RF energy harvesters is being explored.
Researchers from City University of Hong Kong developed a novel device-engineering strategy to suppress energy conversion loss in organic photovoltaics, achieving PCE over 19%. The discovery enables OPVs to maximize photocurrent and overcome the limit of maximum achievable efficiency.
Researchers discover individual gold atoms can target specific C-H bonds in organic molecules, enabling a low-energy reaction at room temperature. This breakthrough addresses two significant challenges and paves the way for the synthesis of novel organic and metal-organic nanomaterials.
Researchers from the University of Oklahoma are collaborating with Japanese institutions to develop new organic soft electronic materials for solar power. The goal is to create more efficient photovoltaics while exploring applications beyond traditional semiconductor uses, such as wearable medical devices.
Researchers from Gwangju Institute of Science and Technology design a novel approach to create durable organic semiconductor photocathodes, enabling high-efficiency conversion of solar energy to hydrogen. The developed photocathodes demonstrate remarkable stability and can produce hydrogen under actual sunlight.
Researchers at KAUST have discovered that the energy level alignment between donor and acceptor components in organic solar cells is crucial for device performance. Contrary to current belief, blends with little to no difference in one energy level metric were found to be poor performers.
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.
Scientists at Kyushu University have developed organic molecules that align in the same direction, creating a 'giant surface potential' when evaporated onto a surface. This alignment leads to a significant electric field, which can improve OLED efficiency and open new routes for realizing devices that convert vibrations into electricity.
Researchers observed band-like transport in OTFTs based on Y6, resulting from its unique molecular packing motif. This phenomenon enables the creation of high-mobility n-type organic semiconductors and TFTs on Y6.
The University of Houston research team has successfully developed a method for 3D printing organic semiconductor devices using multiphoton lithography, enabling the creation of highly conductive microstructures. The technology has potential applications in emerging fields such as nanoelectronics and bioelectronics.
The TU Dresden research group has successfully created an organic bipolar transistor, exceeding previous organic transistors in performance by a significant margin. The innovation enables faster data processing and opens up new perspectives for organic electronics in demanding tasks like data transmission.
A KAUST-led team developed organic semiconductor-based photocatalysts to store solar energy as clean hydrogen fuel. These catalysts can absorb visible light and generate long-lived charges, improving efficiency for hydrogen evolution.
A team led by Andrew Musser at Cornell University has developed a method to tune the speed of polaritons, hybrid particles that combine light and molecules, allowing for increased range and potential applications in efficient solar cells, sensors, and LEDs. This breakthrough could lead to more controlled energy transfer and improved de...
Researchers from the University of Tsukuba and Hiroshima University investigated ternary polymer solar cells to understand why adding an extra ingredient improves their performance. They found that the acceptor molecule ITIC enhances the orientation of polymer molecules, reducing charge accumulation and increasing stability.
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 developed an organic anti-ambipolar transistor capable of performing five different types of two-input logic gates at room temperature. This breakthrough could lead to the creation of high-performance mobile devices and electrically reconfigurable logic circuits.
Scientists create highly efficient organic thermoelectric devices by modulating dopant impurities in crystalline rubrene thin films. This approach allows for superior doping efficiencies even at high doping densities, paving the way for flexible and efficient heat-to-electricity conversion.
An international team of scientists has developed an organic semiconductor that can operate in the 5G frequency range, with a structure featuring ultralow capacitance and resistance. The innovation paves the way for mass manufacturing at low cost using solution processing techniques.
Researchers from Tokyo University of Science developed a high-quality crystalline interface using quasi-homo-epitaxial growth, which eliminated mobility issues and enabled spontaneous electron transfer. This breakthrough could lead to highly efficient flexible solar cells and wearable electronic devices.
Researchers developed novel photon upconversion systems with heterojunctions of bilayer films of organic semiconductors, achieving two orders of magnitude higher external quantum efficiency than conventional systems. This breakthrough enables bright yellow emission in flexible thin films for optogenetics and biosensing applications.
Researchers have developed metal-halide perovskite semiconductors as a cheaper alternative to silicon for solar cells and LEDs. The new material class offers excellent functionality and can be processed from solution, allowing for the creation of efficient devices.
A team of researchers has developed a method to precisely modify electronic properties using ultraviolet light, enabling the creation of flexible circuits that can be used in real-time healthcare monitoring and data processing. This breakthrough technology may lead to the development of ultra-lightweight wearable healthcare devices and...
Researchers at TU Dresden and TU Munich developed a novel method to engineer the energy gap in organic semiconductors by blending materials with varying molecular shapes. This approach enables continuous tunability of the energy gap, paving the way for efficient optoelectronic devices.
Active learning is used to identify promising organic molecules for efficient solar cells by iteratively deciding which data to learn from. This approach allows the algorithm to efficiently explore a vast molecular space and continuously improve its performance.
Researchers at KAUST have developed electron-transporting, air-stable organic semiconductors that can generate electricity from waste heat. The polymers' unique design enhances electrical conductivity and thermoelectric performance, paving the way for scalable, sustainable energy solutions.
Researchers at the University of Tsukuba have developed a technique to visualize ultrafast electron motion with sub-nanoscale spatial resolution, enabling the study of semiconductor device operation and potential defect control. This breakthrough may lead to more efficient electronic devices.
Researchers at the University of Groningen have developed an efficient organic thermoelectric material made from buckyballs with organic side chains. This breakthrough enhances the material's ability to convert temperature differences into electricity, making it suitable for powering wearable electronics and sensors.
Researchers at Swansea University developed a new method to detect tiny signatures of 'charge traps' in organic semiconductors, which may improve the performance of solar cells, photodetectors, and OLEDs. The study found that charge traps can generate new charges rather than annihilate them completely.
Recent advances in OFET device models incorporate molecular-level parameters, enabling more accurate simulation of micrometer-sized devices. These models have improved the understanding of charge-transport mechanisms and provided insights into nonlinear current characteristics.
Researchers developed a prediction method for reverse intersystem crossing (RISC) in organic semiconductors, leading to improved light emission efficiency for Organic Light-Emitting Diodes (OLEDs). The method demonstrated accurate predictions for various TADF materials, with some presenting RISC rate constants of over 10^7 per second.
Researchers at Okayama University create novel electrochemical reaction to produce thienoacenes, key building blocks in organic semiconductors. The new method replaces expensive rare metal catalysts with an eco-friendly approach, reducing manufacturing costs and environmental impact.
Surface doping of organic semiconductors using two-dimensional molecular crystals has been shown to improve their electronic properties. The use of 1D/2D composite single crystals enables highly controllable doping at the monolayer precision, resulting in increased mobility and reduced threshold voltage. This approach holds great promi...
Researchers developed a novel approach for preparing thin fullerene films from aqueous solutions, reducing environmental risks and making organic electronics more accessible. The method enabled fabrication of organic field-effect transistors with high charge carrier mobility and gas sensors.
A team developed new hydrogen evolution photocatalysts (HEPs) made from two semiconducting materials, enhancing energy storage. The HEPs absorb more visible light, increasing hydrogen production rates an order of magnitude beyond current single-component inorganic HEPs.
A Rutgers-led study reports the first experimental measurement of how bending organic semiconductors affects electricity flow, showing a 1 percent bend can double electron speed.
A new type of programmable organic capacitive memory called pinMOS is introduced, which stores several states due to controllable charge addition or removal. The pinMOS memory is promising for future applications in electronic and photonic circuits.
Researchers from the University of Illinois have discovered a way to repurpose biological molecules, once considered for cancer treatment, as organic semiconductors. These molecules can interact with biological material with high specificity, making them good candidates for use in biosensors.
Researchers at UC Santa Barbara and their international team have uncovered the mechanism behind doping organic semiconductors using Lewis acids. The discovery reveals that water plays a crucial role in this process, enabling scientists to design even better dopants for greater control over these materials.
Researchers at the University of Warwick have discovered that organic solar cells only need 1% of their surface area to be electrically conductive, opening up possibilities for composite materials and improved device performance. This breakthrough could enable flexible solar cells to become a commercial reality sooner.
Researchers have synthesized a novel organic substance called C6 OAHCQ with potential as an n-type semiconductor. It exhibits unique properties such as electron-accepting behavior and excellent solubility in common organic solvents.
Researchers at Osaka University have demonstrated a new mechanism for charge mobility in organic single crystals, challenging previous assumptions. The study's findings show that molecular vibrations caused by flexibility limit the performance of organic semiconductors.
Researchers have generated free electrons from organic semiconductors using a single atomic layer of molybdenum disulfide. This breakthrough enables the development of general principles for designing interfaces that can turn light into electrical current with high efficiency.
Researchers found that adjusting a single molecular parameter, the molecular quadrupole moment, can tune the energetics in organic films. This effect enhances long-range Coulomb interactions in organic materials.
Researchers discovered a 'third phase' that does not occur in bulk material and corresponds to a monomolecular layer of the semiconductor. This structure is favorable for charge transport across the films, which could lead to improved performance in microelectronics applications.
A new organic semiconductor material, triazine-based graphitic carbon nitride (TGCN), has been synthesized with a band gap of 1.7 electron volts, ideal for optoelectronics applications. The material exhibits high perpendicular conductivity, 65 times greater than planar conductivity.
Researchers at Kyushu University have successfully demonstrated the lasing by direct electrical stimulation of an organic film, overcoming previous performance limitations with improved materials and device structures. The breakthrough enables applications such as biosensing, displays, healthcare, and optical communications.
Theoretical and experimental investigations confirm the Marcus hopping model for electronic transport in organic films. The study verifies the 'inverted Marcus regime' where higher voltage generates lower current, improving understanding of organic devices.
Researchers at Linköping University discover that water induces traps in organic semiconductors, reducing conductivity. Drying out the material improves performance, but reabsorption occurs if not done properly.
The researchers have fabricated an organic semiconductor pn junction with high crystallinity using molecular beam epitaxy, allowing for efficient electron and hole delocalization. This technology enables the realization of new concept organic solar cells with high energy conversion efficiency.
Researchers at Swansea University and the University of Hamburg have discovered metal nanoclusters that can be used as semiconductors, displaying unique properties such as field effect and photoconductivity. The findings hold promise for a wide range of potential applications in electronics, wearable technology, and gas sensing.
Researchers have developed an organic transistor that can operate efficiently under various current densities, opening up potential applications in OLEDs, sensors, and memristive elements. The device combines high currents with low-voltage operation, making it suitable for artificial synapses and other contexts.