Current Oleds News and Events

Current Oleds News and Events, Oleds News Articles.
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Invisible organic light-emitting diodes reach new world record
You can't see it with the naked eye, but a new fluorescent organic light-emitting diode (OLED) could shed light on the development of innovative applications in devices such as smartphone and television displays using near-infrared light. Created through the combined work of engineers from Polytechnique Montréal and chemists from Université de Montréal, this fluorescent OLED is 300% more efficient than existing OLEDs in its category. The research team published today details in the journal Advanced Functional Materials. (2020-11-11)

Scientists develop method to detect charge traps in organic semiconductors
Scientists at Swansea University have developed a very sensitive method to detect the tiny signatures of so called 'charge traps' in organic semiconductors. (2020-11-04)

Future VR could employ new ultrahigh-res display
Repurposed solar panel research could be the foundation for a new ultrahigh-resolution microdisplay. The OLED display would feature brighter images with purer colors and more than 10,000 pixels per inch. (2020-10-22)

Two-dimensional MXene as a novel electrode material for next-generation display
Two-dimensional MXene as a novel electrode material for next-generation display. (2020-10-05)

Light from rare earth: new opportunities for organic light-emitting diodes
Efficient and stable blue OLED is still a challenge due to the lack of emitter simultaneously with high efficiency and short excited-state lifetime. A blue emission cerium(III) complex was demonstrated for a high efficiency OLEDs with superior stability. The excellent performance could be assigned to the nanoseconds spin- and parity- allowed 5d?4f transition of Ce3+ ion. Along with adjustable emission color and low cost, cerium(III) complexes would be promising emitters in OLEDs. (2020-10-03)

Deep-blue organic light-emitting diodes based on a doublet-emission cerium(III) complex
In this work, the authors have demonstrated a high external quantum efficiency (EQE) in deep-blue organic light-emitting diodes (OLEDs) based on a new cerium(III) complex Ce-1 as the emitter, which can achieve 100% exciton utilization efficiency (EUE). Coupled with its short excited-state lifetime, adjustable emission spectrum, and low cost, cerium(III) complex has the potential to develop deep-blue OLEDs with high efficiency and long-term stability, and also to expand into the field of full-color OLEDs. (2020-09-21)

New technology speeds up organic data transfer
An international research team, involving Newcastle University experts, developed visible light communication (VLC) setup capable of a data rate of 2.2?Mb/s by employing a new type of organic light-emitting diodes (OLEDs). (2020-07-17)

Title: Two-dimensional MXene as a novel electrode material for next-generation display
Researchers in the US and Korea reported the first efficient flexible light-emitting diodes with a two-dimensional titanium carbide MXene as a flexible and transparent electrode. This MXene-based light-emitting diodes (MX-LED) with high efficiency and flexibility have been achieved via precise interface engineering from the synthesis of the material to the application (Advanced Materials,2020, 2000919). (2020-05-25)

NMR confirms molecular switches retain function in 2D-array
Researchers led by Jiri Kaleta of IOCB Prague have synthesized regular 2D assemblies of isotopically labelled molecular switches and measured the properties of their isomerization, revealing that formation of such an assembly doesn't hamper the photochemical switching properties of the embedded molecules. The isotopic labels came into use when measuring the switching properties using an analytic technique dependent on the labels. The team published the results in the Journal of the American Chemical Society. (2020-05-13)

In search of the lighting material of the future
At the Paul Scherrer Institute PSI, researchers have gained insights into a promising material for organic light-emitting diodes (OLEDs). The substance enables high light yields and would be inexpensive to produce on a large scale -- that means it is practically made for use in large-area room lighting. Researchers have been searching for such materials for a long time. The newly generated understanding will facilitate the rapid and cost-efficient development of new lighting appliances in the future. (2020-05-01)

Enhanced 1.54 μm PL and EL on a perfluorinated Er3+ complex sensitized by an Ir3+ complex
The potential of using erbium-contained organic materials to develop cost-effective electrically-driven light-emitting devices for silicon photonics is well proposed, but methods to increase the power efficiency are keenly sought. Scientists in the UK and China demonstrated a dramatic enhancement of erbium electroluminescence by mixing a phosphorescent iridium complex with a separated erbium complex at the molecular level. This innovation emphasizes the potential advantages of exploring molecular composites for efficient C-band light-emitting devices. (2020-03-26)

Stress-relief substrate helps OLED stretch two-dimensionally?
Highly functional and free-form displays are critical components to complete the technological prowess of wearable electronics, robotics, and human-machine interfaces. A KAIST team created stretchable OLEDs (Organic Light-Emitting Diodes) that are compliant and maintain their performance under high-strain deformation. Their stress-relief substrates have a unique structure and utilize pillar arrays to reduce the stress on the active areas of devices when strain is applied. (2020-02-28)

Light-up wheels: Unique organic light-emitting molecular emitters
Researchers at Osaka University synthesized novel OLEDs based on efficient ring-shaped molecular macrocycles. This work may help lead to sensitive, yet inexpensive, chemical detectors. (2020-01-21)

Hot OLEDs can 'switch back'
Organic LEDs have found their way into commercially relevant applications such as smartphone displays and TV screens. They are also considered for lighting and functional lights in and around cars. In these very high-brightness applications, self-heating plays an important role and leads to fascinating non-linear effects that can even result in switched-back regions as experimentally proven in a joint publication by researchers from TU Dresden and Weierstrass Institute Berlin. (2020-01-14)

Simultaneous emission of orthogonal handedness in circular polarization
Both right- and left-handed circularly polarized light were simultaneously generated from a single device, paving the way for novel applications in biosensors and organic LEDs. The device by using the liquid crystal phase of a polymer, called F8BT, was fabricated by rubbing its upper and lower surfaces in specific directions. The study demonstrates the feasibility of a light source with multiple polarizations, which could have applications in a variety of optical devices. (2019-12-13)

Extraordinarily thick organic light-emitting diodes solve nagging issues
By combining thin organic layers with thick layers of hybrid perovskite, researchers at Kyushu University in Japan have developed micrometer-thick organic light-emitting diodes that could improve the affordability and viewing angles of high-performance displays and televisions in the near future. (2019-07-29)

Does one size does fit all? A new model for organic semiconductors
A team including researchers from Osaka University has used a single rubrene crystal to investigate the room temperature behavior of organic single crystals, and in so doing have dispelled previously-held assumptions based on inorganic semiconductor behavior. It is hoped that these insights into the specific behavior of organic conducting materials will accelerate the development of flexible conducting devices with high functionality. (2019-07-24)

Dresden physicists use nanostructures to free photons for highly efficient white OLEDs
Thanks to intensive research in the past three decades, organic light-emitting diodes (OLEDs) have been steadily conquering the electronics market -- from OLED mobile phone displays to roll-out television screens, the list of applications is long. Current OLED research focuses in particular on improving the performance of white OLEDs for lighting elements such as ceiling or car interior lighting. These components are subject to much stricter requirements in terms of stability, angular emission and power efficiency. (2019-07-11)

On the way to printable organic light emitting diodes
OLEDs are used today in many electronic devices for display applications. Scientists at the Max-Planck-Institute for Polymer Research have now developed a new design for these LEDs. They have reduced the number of different layers that make up an OLED to just one. In the future, this could allow light-emitting diodes that can be inkjet-printed. The first prototype of the developed diode can already compete with commercially available OLEDs in terms of luminosity and efficiency. (2019-07-10)

New mechanism allows lower energy requirement for OLED displays
Scientists from RIKEN and the University of California San Diego, in collaboration with international partners have found a way to significantly reduce the amount of energy required by organic light emitting diodes (OLEDs). (2019-06-05)

Organic laser diodes move from dream to reality
Researchers from Japan have demonstrated that a long-elusive kind of laser diode based on organic semiconductors is indeed possible, paving the way for the further expansion of lasers in applications such as biosensing, displays, healthcare, and optical communications. (2019-05-31)

Review on the synthesis and anti-oxidation of copper nanowires for transparent conductive electrodes
In a paper to be published in the forthcoming issue in NANO, a team of researchers have reviewed the methods of synthesizing copper nanowires (Cu NWs) and techniques to improve its oxidation resistance. With excellent electrical, optical, and thermal properties, Cu NWs are an attractive alternative to indium tin oxide (ITO) as a traditional electrode material. (2019-05-06)

True-meaning wearable displays: Self-powered, washable and wearable
When we think about clothes, they are usually formed with textiles and have to be both wearable and washable for daily use; however, smart clothing has had a problem with its power sources and moisture permeability, which causes the devices to malfunction. This problem has now been overcome by a KAIST research team, who developed a textile-based wearable display module technology that is washable and does not require an external power source. (2019-03-21)

Organic semiconductors: One transistor for all purposes
In mobiles, fridges, planes - transistors are everywhere. But they often operate only within a restricted current range. Ludwig-Maximilians-Universitaet (LMU) in Munich physicists have now developed an organic transistor that functions perfectly under both low and high currents. (2019-03-21)

Molecular Lego blocks
Organic semiconductors are lightweight, flexible and easy to manufacture. But they often fail to meet expectations regarding efficiency and stability. Researchers at the Technical University of Munich (TUM) are now deploying data mining approaches to identify promising organic compounds for the electronics of the future. (2019-02-14)

USC scientists find a cheaper way to light up OLED screens
USC Dornsife chemists appear to have finished the quest for a cheaper, efficient alternative to the iridium compounds while also solving the decades-long problem with the color blue. Surprisingly, copper does it all. (2019-02-07)

Invisible tags: Physicists at TU Dresden write, read and erase using light
A team of physicists headed by Professor Sebastian Reineke of TU Dresden developed a new method of storing information in fully transparent plastic foils. Their innovative idea was now published in the renowned online journal Science Advances. (2019-02-01)

Researchers at TU Dresden decipher electrical conductivity in doped organic semiconductors
Researchers from the Dresden Integrated Center for Applied Physics and Photonic Materials (IAPP) and the Center for Advancing Electronics Dresden (cfaed) at TU Dresden, in cooperation with Stanford University (USA) and the Institute for Molecular Science in Okazaki (Japan), have identified the key parameters that influence electrical conductivity in doped organic conductors. (2019-01-29)

Radical approach for brighter LEDs
Scientists have discovered that semiconducting molecules with unpaired electrons, termed 'radicals' can be used to fabricate very efficient organic-light-emitting diodes (OLEDs), exploiting their quantum mechanical 'spin' property to overcome efficiency limitations for traditional, non-radical materials. (2018-11-21)

New efficiency record set for perovskite LEDs
Researchers have set a new efficiency record for LEDs based on perovskite semiconductors, rivalling that of the best organic LEDs (OLEDs). (2018-11-05)

Smart fluorescent dyes
Controlling the excited electronic states in luminescent systems remains a challenge in the development of fluorescent and phosphorescent dyes. Now, scientists in Japan have developed a unique organic fluorophore that changes its emission color without loss of efficiency when externally stimulated. The study published in the journal Angewandte Chemie explains this behavior by a simple phase transformation of the solid substance, which could be relevant for optoelectronic applications such as in smart OLEDs. (2018-08-16)

Exciton limits are meant to be broken: OLED surpasses 100 percent exciton production efficiency
Researchers at Kyushu University's Center for Organic Photonics and Electronics Research (OPERA) have demonstrated an OLED that uses singlet fission to boost the percentage of excitons created per pair of electrical charges to over 100 percent. This increase of light-producing excitons when one singlet exciton is split into two triplet excitons through singlet fission results in a stronger emission intensity and is promising for the development of high-intensity near-infrared OLEDs for biological and communications applications. (2018-07-05)

OLEDs become brighter and more durable
Researchers from the Universitat Autònoma de Barcelona and Technische Universität Dresden demonstrate the possibility of using ultrastable film formation to improve the performance of state-of-the-art OLEDs. In their joint paper published in Science Advances the researchers show in a detailed study significant increases of efficiency and operational stability (> 15 percent for both parameters and all cases, significantly higher for individual samples) are achieved for four different phosphorescent emitters. (2018-05-25)

Organic light-emitting diodes become brighter and more durable: layers made as ultrastable glasses improve device performance
Researchers from the Universitat Autònoma de Barcelona and Technische Universität Dresden have demonstrated the possibility of using ultrastable film formation to improve the performance of state-of-the-art OLEDs. (2018-05-25)

Appending triphenyltriazine to 1,10-phenanthroline
The electron-transport material is a dispensable element of organic light-emitting diodes (OLEDs). Recently, Xu-Hui Zhu and co-workers at State Key Laboratory of Luminescent Materials and Devices, South China University of Technology developed a series of high Tg phenanthroline derivatives, which may provide a promising approach to high-performant and cost-effective organic electron-transport materials for practical applications. (2018-05-23)

Fiber OLEDs, thinner than a hair
Professor Kyung Cheol Choi from the School of Electrical Engineering and his team succeeded in fabricating highly efficient organic light-emitting diodes (OLEDs) on an ultra-thin fiber. The team expects the technology, which produces high-efficiency, long-lasting OLEDs, can be widely utilized in wearable displays. (2018-01-09)

A curious quirk brings organic diode lasers one step closer
Since their invention in 1962, semiconductor diode lasers have revolutionized communications and made possible information storage and retrieval in CDs, DVDs and Blu-ray devices. These diode lasers use inorganic semiconductors grown in elaborate high vacuum systems. Now, a team of researchers from Penn State and Princeton University have taken a big step toward creating a diode laser from a hybrid organic-inorganic material that can be deposited from solution on a laboratory benchtop. (2017-11-20)

Bright and shining molecules for OLEDs and new drugs
Chemists from Russia and Kazakhstan have come up with new, convenient, and effective two-step procedure for producing new thiophene derivatives from starting materials that are simple and easy to obtain. New compounds possess important photophysical properties, in particular fluorescence (the emission of light by a substance that has absorbed light or other electromagnetic radiation) (2017-11-13)

Glowing news for organic materials
Researchers at Kyushu University's Center for Organic Photonics and Electronics Research (OPERA) have developed the world's first glow-in-the-dark materials based on organic molecules. The materials eliminate the expensive metals and high-temperature processing needed by current inorganic glow-in-the-dark materials. In addition to reducing cost, organic materials are likely to enable improved flexibility, transparency, and bio-compatibility, opening the door for a variety of new applications. (2017-10-02)

A new approach to ultrafast light pulses
A team of MIT researchers and others has found a new way of producing high-speed pulses of light using two-dimensional molecular aggregates, which could enable new photonic devices such as optically based microchips. (2017-09-18)

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