Articles tagged with Organic Semiconductors
A UB-led team has found a way to help chiral semiconductors, electronic materials whose structures are left- or right-handed like many of life's building blocks, absorb visible light. Researchers chemically combined a chiral semiconducting material with a non-chiral molecule that more readily absorbs visible light.
Four UMass Amherst researchers have been elected as American Association for the Advancement of Science (AAAS) fellows for their distinguished contributions to various fields. Om Parkash Dhankher's work in agricultural biotechnology has led to the development of arsenic-free rice and phytoremediation of toxic metals.
A new material, benzene-phosphonic acid (BPA), enables self-powered operation of smart sensors and wearables. The breakthrough technology reduces fabrication costs and promotes environmental sustainability.
A research team at Chiba University has overcome the efficiency trade-off to create organic multifunctional devices that can both light up and power themselves. By precisely controlling exciton binding energy, they achieved low voltage loss and full-color operation across the visible spectrum.
Scientists have created a new quantum state, known as hybrid excitons, at the interface of organic and 2D semiconductors. This unique state enables ultrafast energy transfer, which holds promise for developing next-generation solar cells and optoelectronic components.
Researchers at University of Illinois have developed polymers that exhibit enhanced conductivity due to controlled chirality and chemical doping. The study found that structural chirality boosts the chemical reaction controlling doping in polymers, leading to higher conductivity.
Researchers developed three-dimensionally shaped molecules containing an internal twist, exhibiting properties of organic semiconductors. The molecule was verified to act as an organic semiconductor in an organic field-effect transistor.
Researchers at Washington State University have discovered a hybrid zinc telluride-based material that undergoes structural changes when subjected to pressure, making it a strong candidate for phase change memory. The material's layered structure and directional sensitivity open the door to additional uses in photonics.
Researchers at Queensland University of Technology have developed a new material that can convert body heat into electricity with improved mechanical properties and flexibility. The material, AgCu(Te, Se, S), was enhanced using vacancy engineering techniques.
Researchers successfully synthesized polyaniline with a golden luster, exhibiting unique properties and potential for micro-organic semiconductor devices. The material's metallic luster is attributed to polarons and surface luster, setting it apart from conventional conductive polymers.
Researchers at Graz University of Technology developed a new understanding of how complex materials like organic semiconductors and MOFs transport thermal energy. They discovered that phonon tunneling plays a crucial role in heat conduction, enabling targeted design of materials with specific thermal properties.
Researchers developed highly conductive assemblies of gold complexes using ion-pairing, enabling solution-processed fabrication of conductive materials. The benzoporphyrin Au III complex expanded π-system increases dispersion forces, overcoming electrostatic repulsion between identically charged molecules.
Researchers have developed a chiral semiconductor that emits circularly polarised light, potentially improving OLED display efficiency and enabling quantum computing. The innovation uses molecular design tricks inspired by nature to create ordered spiral columns of semiconducting molecules.
A team from Osaka Metropolitan University has developed a crystal patterning method that controls the position and orientation of photochromic crystals, known as diarylethenes. This breakthrough allows for the creation of convex structures with precise control over crystal shape and size.
Researchers developed a novel strategy to synthesize single-crystal sp²c-COFs, which exhibit enhanced electronic conductivity and magnetic properties compared to classical COFs. The synthesized single crystals show room-temperature metal-free ferromagnetism, addressing the bottleneck in synthesizing single-crystal COFs.
A team at Osaka Metropolitan University has designed a multilayer device to investigate spin currents, using an organic semiconductor material with a long spin relaxation time. This allows direct observation of phenomena due to spin current generation and enables researchers to gain deeper insights into the properties of spin currents.
A process yielding record-high performing transistors from solution-deposited semiconductors has been developed, despite higher defect concentrations in the material. The researchers' work enables large-area applications and efficient processing, paving the way for high-performance electronics.
Materials scientists at Stanford employed a novel electron microscopic technique to study the structural microstructure and electrochemical properties of organic mixed ionic-electronic conductors, revealing how they maintain electronic functionality despite swelling by up to 300%.
Researchers at Istituto Italiano di Tecnologia in Milan created an edible transistor using a toothpaste pigment, enabling the development of smart pills and potential healthcare applications. The device is made from ethylcellulose substrate with gold particles and operates at low voltage.
Researchers from Osaka University have synthesized a new molecule that increases the power conversion efficiency of organic solar cells. The molecule's design reduces exciton binding energy, making it easier to convert sunlight into current. This breakthrough paves the way for high-performance and large-scale photovoltaic applications.
The study predicts light transmission, absorption, and power generation of different PV materials, enabling the selection of optimal materials for agrivoltaics. By carefully tuning the 'colour' of light transmitted through semi-transparent PVs, researchers can enhance crop growth while generating solar power.
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 found novel methods to enhance the conductivity of organic semiconductors by emptying their valence bands, leading to unprecedented levels of doping. This breakthrough could lead to higher-power thermoelectric devices that convert waste heat into electricity.
Researchers at Nagoya University have developed an ammonia-free technique for producing GaN semiconductors, enabling high-quality growth at lower temperatures and reduced raw material consumption. This method also reduces the need for detoxifying systems and energy expenditure.
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...
A team of researchers from the University of Kansas has discovered a microscopic mechanism that explains why a new class of organic semiconductors outperforms others. This breakthrough could lead to more efficient solar cells and photocatalysts for producing solar fuels, revolutionizing the clean energy sector.
Researchers have developed a novel material that can produce green hydrogen through photoelectrocatalysis, a process driven by sunlight. The material, composed of polyaniline nanostructures and carbon nanotubes, demonstrates enhanced light absorption and stability, making it an attractive candidate for the future of fuel production.
Researchers aim to create polymers that can form the basis of effective sensors for applications in physiological, environmental, and Internet of Things monitoring. The goal is to increase energy efficiency and broaden material choices, enabling devices to operate at low voltage and interact with ions and transport ionic charges.
Researchers at Linköping University developed a new method to dope organic semiconductors using air as a dopant, enhancing conductivity and modifying semiconductor properties. The process involves dipping the material in a salt solution and illuminating it with light, resulting in a p-doped conductive plastic.
A team from Pohang University of Science & Technology has developed a memory transistor that can adjust its threshold voltage through photocrosslinking. The innovation combines two molecules with a polymeric semiconductor to form a stable bond, enabling precise control of the semiconductor layer's structure.
Scientists at POSTECH create conducting polymers with exceptional electrical conductivity, rivaling graphene's performance. The breakthrough achieves ultrafast electron mobility and long phase coherence length, overcoming a major challenge in organic semiconductors.
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 have developed a new method to visualize the quantum mechanical wave function of excitons in organic semiconductors. This understanding is essential for developing more efficient materials with organic semiconductors. The technique, known as photoemission exciton tomography, provides insights into the behavior of excitons i...
Researchers have developed a printable organic polymer that enables them to measure charge-to-spin conversion in spintronic materials at room temperature, revealing new insights into the mechanics of spintronics. The findings suggest longer spin lifetimes and tunability, paving the way for more efficient and energy-friendly devices.
Scientists at Stockholm University and KTH have developed organic electronic devices that are cheaper and more sustainable by blending polystyrene with other materials. The technology has the potential to reduce our dependency on critical raw materials in disposable and consumer electronics, leading to a decrease in e-waste.
Researchers at City University of Hong Kong developed mixed-dimensional anti-ambipolar transistors for multifunctional electronics, enabling higher information density and lower power consumption. The new technology paves the way for simplified chip circuit design and versatile applications in digital and analog signal processing.
A new instrument called CLIMAT was developed by HZB physicist Dr Artem Musiienko to characterise semiconductors. It measures 14 parameters of transport properties in a single measurement, including mobility, diffusion lengths and lifetime, for positive and negative charge carriers.
Scientists at University of Utah and University of Massachusetts Amherst uncover the physics behind dopant-polymer interactions that explain inconsistent conductivity issues in organic materials. The discovery reveals that a critical mass of electrons triggers collective screening, allowing rest of electrons to flow unimpeded.
Researchers at Linköping University have developed a new, sustainable way to create conductive inks for use in organic electronics. The new process uses benign solvents like water and has been shown to improve material properties and device performance.
A team of researchers has precisely measured exciton binding energies in organic semiconductors, finding unexpected correlations between the energy and material type. The study's high precision will help discuss the exciton nature of organic semiconductors with greater confidence.
A team of researchers from Chiba University introduces a new method of controlled deposition, enabling the creation of stable surface layers with controllable polarization. This approach is expected to improve the efficiency and lifetime of OLED materials, as well as pave the way for the development of new organic devices.
Researchers at UNIST have achieved a significant breakthrough in organic semiconductor synthesis by synthesizing a novel molecule called BNBN anthracene. This derivative exhibits unique properties, including precise modulation of electronic properties without structural changes.
Scientists at Linköping University have created stable and environmentally friendly organic solar cells by incorporating untreated kraft lignin into the electron transport layer. This innovation improves the overall efficiency and reliability of organic solar cells, paving the way for a more sustainable future.
Researchers at Tufts University have created hybrid transistors using silk proteins that can detect changes in humidity, oxygenation levels, and glucose. The transistors have the potential to enable integrated circuits that train themselves and respond to environmental signals.
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 at King Abdullah University of Science & Technology have developed organic solar cells with record efficiencies and discovered a link between molecular structure and outdoor stability. The study found that fluorine-bearing functional end groups and long hydrocarbon side-chains enhance outdoor stability, protecting the cells...
Researchers at the University of Surrey have developed new, tissue-equivalent curved organic X-ray detectors that are cheaper, more flexible, and sensitive than traditional detectors. These detectors have the potential to improve accuracy in cancer treatment and reduce radiation risk.
Researchers have developed a retina-like biochip that mimics the eye's visual pathways, using conductive polymers and light-sensitive molecules. The chip's non-toxic organic components and flexibility make it suitable for integration into biological systems, paving the way for new treatments for neurological diseases.
A novel method transforms wastewater pollutants into semiconductor biohybrids directly in the wastewater environment, producing valuable chemicals like 2,3-butanediol. The process exhibits scalability and a lower carbon footprint compared to traditional methods, making it an eco-friendly approach to chemical manufacturing.
Scientists at the University of St Andrews have developed an electrically driven organic semiconductor laser, overcoming a decades-long challenge. This breakthrough has significant implications for various industries, including communication, medicine, and manufacturing.
Researchers have created a highly efficient and stable photoelectrode for water splitting using organic semiconductors. The new design overcomes the limitations of traditional inorganic semiconductor-based photoelectrodes, resulting in enhanced hydrogen production efficiency.
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 team of researchers has found a way to control the interaction of light and quantum spin in organic semiconductors, even at room temperature. This breakthrough enables the creation of quantum objects with controlled spin states, which could lead to significant advancements in fields like quantum computing and sensing.
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 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 have developed a new class of molecules that form a molecular highway for electrons, eliminating charge trapping and improving the efficiency of blue OLEDs. This design simplifies the production of high-efficiency blue light-emitting diodes.
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.