Results 51 to 60 of about 3,009,751 (351)

Improving the air stability of flexible top-emitting organic light-emitting diodes

npj Flexible Electronics
Flexible organic light-emitting diodes (OLEDs) are promising light sources for biomedical applications. However, the use of these flexible devices has been restricted by their short shelf lifetimes due to poor ambient stability.
Mina Riahi, Kou Yoshida, Ifor D. W. Samuel   +2 more
doaj   +1 more source

Micro-Sphere PDMS for Enhancing Light Extraction in Organic Light-Emitting Devices

Nanomaterials, 2022
We present a micro-sphere PDMS film to improve the external quantum efficiency (EQE) in OLEDs. The micro-sphere PDMS film was fabricated with the breath figure (BF) and replica molding process.
Eun-Jeong Bae, Hyeong-Kyu Maeng, Ji-Soo Shin, Dong-Wook Park, Young-Wook Park, Dong-Hyun Baek   +5 more
doaj   +1 more source

Integration of Low‐Voltage Nanoscale MoS2 Memristors on CMOS Microchips

Advanced Functional Materials, EarlyView.
This article presents the first monolithic integration of nanoscale MoS2‐based memristors into the back‐end‐of‐line of foundry‐fabricated CMOS microchips in a one‐transistor‐one‐resistor (1T1R) architecture. The MoS2‐based 1T1R cells exhibit forming‐free, nonvolatile resistive switching with ultra‐low operating voltages, low cycle‐to‐cycle variability ...
Jimin Lee, Sofía Cruces, Xiaohua Liu, Yang Chen, Vasilis A. Maroufidis, Janghyun Jo, Lukas Völkel, Dennis Braun, Michael Möller, Leon Brackmann, Holger Kalisch, Michael Heuken, Andrei Vescan, Rafal E. Dunin‐Borkowski, Joachim Mayer, Stefan Wiefels, Max C. Lemme   +16 more
wiley   +1 more source

Temperature-dependent built-in potential in organic semiconductor devices [PDF]

, 2006
The temperature dependence of the built-in voltage of organic semiconductor devices is studied. The results are interpreted using a simple analytical model for the band bending at the electrodes.
J. M. Kramer, Kemerink, M Martijn, Kramer, J.M., Kramer, JM,, Gommans, HHP, Kemerink, Martijn,, Janssen, RAJ René, Janssen, R.A.J.; id_orcid, Gommans, HHP,, Kemerink, M., Janssen, RAJ,, H. H. P. Gommans, M. Kemerink, R. A. J. Janssen, Gommans, H.H.P., Kramer, JM, Janssen, R.A.J.   +16 more
core   +1 more source

Single-photon upconversion via hot-band absorption and assessment of the laser cooling effect of tricarbocyanine dyes

Chemical Physics Impact, 2021
A series of new tricarbocyanine near-infrared (NIR) dyes is demonstrated which are able for a single-photon vibronic-assisted anti-Stokes luminescence with a large, up to 147 nm (225 meV), anti-Stokes shift of the excitation energy.
Illya Sharanov, Yuri Slominskii, Alexander Ishchenko, Alexander Fedoryak, Oleg Dimitriev   +4 more
doaj   +1 more source

Solution‐Processed Two‐Dimensional Indium Oxide on Sodium‐Embedded Alumina for Reconfigurable Optoelectronic Synaptic Transistors

Advanced Functional Materials, EarlyView.
Wafer‐scale two‐dimensioanl In2Se3 oxidized into InOx on sodium‐embedded beta‐alumina enables multifunctional reconfigurable electronics. Sodium ions accumulate within distinct spatial distribution under drain‐controlle and gate‐controlled operation. Drain‐control operation gives controllability of ultraviolet‐driven optoelectronic synaptic conductance
Jinhong Min, Yonghyun Albert Kwon, Hyunbin Kim, Jihyun Kim, Myeongjin Jung, Jaewon Heo, Gwang Ya Kim, Vlastimil Mazanek, Zdeněk Sofer, In Soo Kim, Jeong Ho Cho, Hyesung Park, Sang Min Won, Joohoon Kang   +13 more
wiley   +1 more source

Nanostructured Electrodes for Organic Solar Cells: Analysis and Design Fundamentals

, 2012
Nanostructured electrodes (NEs) improve optical absorption and charge collection in photovoltaic (PV) devices. Traditionally, the electrodes have been designed exclusively for higher optical absorption.
Alam, Muhammad A., Black, Charles, Ray, Biswajit, Khan, Mohammad R.   +3 more
core   +1 more source

Photoluminescence Turn‐On Method to Determine the Kinetics of Thermally Activated Delayed Fluorescence Materials

Advanced Physics Research
Thermally activated delayed fluorescence (TADF) is a desirable emission mechanism that can translate into highly efficient organic light‐emitting diodes.
Stefan Diesing, Kou Yoshida, Eli Zysman‐Colman, Ifor D.W. Samuel   +3 more
doaj   +1 more source

Exciton Binding Energy of Phosphorescent Emitter Molecules in Organic Light‐Emitting Diodes

Advanced Functional Materials, EarlyView.
Energy level alignment is key to efficient OLED design, yet determining LUMO energies remains challenging. A methodology based on field‐induced dissociation and kinetic Monte Carlo simulations is presented to extract LUMO energies of iridium‐based phosphorescent emitters from their exciton binding energy.
Hiroki Tomita, Lucas R. L. Norg, Patrick Diederen, Clint van Hoesel, Christ H. L. Weijtens, Peter A. Bobbert, Reinder Coehoorn   +6 more
wiley   +1 more source

Highly efficient organic light‐emitting diodes and light‐emitting electrochemical cells employing multiresonant thermally activated delayed fluorescent emitters with bulky donor or acceptor peripheral groups

Aggregate
Multiresonant thermally activated delayed fluorescence (MR‐TADF) emitters have been the focus of extensive design efforts as they are recognized to show bright, narrowband emission, which makes them very appealing for display applications.
Jingxiang Wang, Hassan Hafeez, Shi Tang, Tomas Matulaitis, Ludvig Edman, Ifor D. W. Samuel, Eli Zysman‐Colman   +6 more
doaj   +1 more source