Results 111 to 120 of about 27,237 (259)

Immense magnetic response of exciplex light emission due to correlated spin-charge dynamics

, 2016
As carriers slowly move through a disordered energy landscape in organic semiconductors, tiny spatial variations in spin dynamics relieve spin blocking at transport bottlenecks or in the electron-hole recombination process that produces light. Large room-
Flatté, Michael E., Harmon, Nicholas J., Sahin-Tiras, Kevser, Wang, Yifei, Wohlgenannt, Markus   +4 more
core   +2 more sources

Interplay of Crystallization and Amorphous Spinodal Decomposition During Thermal Annealing of Organic Photoactive Layers

Advanced Science, EarlyView.
Phase‐Field simulations are carried out to elucidate nanomorphology formation mechanisms in organic photoactive layers under thermal annealing. The predicted bulk heterojunction structures are in excellent agreement with Scanning Electron Microscopy measurements.
Maxime Siber, Olivier J. J. Ronsin, Gitti L. Frey, Jens Harting   +3 more
wiley   +1 more source

An Organometallic [2]Catenane With Pt‒(di‐NHC)‒Pt Units: A Topology‐Driven Strategy for Enhanced Phosphorescence in Discrete Aggregates

Angewandte Chemie, EarlyView.
The mechanically interlocked Borromean rings are stabilized by π···π stacking interactions while the [2]catenane is stabilized by solvophobic effects. While the π···π interactions in the Borromean rings lead to severe luminescence quenching, the solvophobically assembled [2]catenane effectively circumvents these interactions, simultaneously restricting
Ye Lu, Xi‐Dong Wu, Zi‐Yan Min, Lu An, Shi‐Ping Yang, F. Ekkehardt Hahn   +5 more
wiley   +2 more sources

Enhanced Energy Transfer from a Metal–Organic Framework to a Highly Confined Organic Phosphorescent Dye

Advanced Science, EarlyView.
A phosphorescent dye was designed to fit in a hand‐to‐glove fashion into the 1D‐pore channels of MIL‐68(In). We synthesized MIL‐68(In) as powder and thin films, loaded the dye into the pores with controlled packing, and found that the phosphorescence and quantum yield are enhanced.
Bahram Hosseini Monjezi, Thomas Kasper, Gloria Hong, Changfeng Si, Robert Oestreich, Oliver Weingart, Peter G. Weidler, Christof Wöll, Eli Zysman‐Colman, Christoph Janiak, Stefan Bräse, Klaus Müller‐Buschbaum, Alexander Knebel   +12 more
wiley   +1 more source

Synergistic Pyro‐Phototronics and Structural Anisotropy in CsAg2I3/GaN Heterostructures for High‐Performance Polarization‐Sensitive UV Photodetectors

Advanced Science, EarlyView.
The development of polarization‐sensitive ultraviolet photodetectors is limited by poor heterojunction quality and low polarization sensitivity. This study integrates synthesized CsAg2I3 single crystals with intrinsic non‐centrosymmetry into van der Waals heterojunction devices, demonstrating pronounced pyro‐phototronic effect.
Yalin Zhai, Siqi Wang, Peng Guo, Songling Feng, Peng Wan, Jilong Tang, Caixia Kan, Hui Li, Daning Shi, Mingming Jiang   +9 more
wiley   +1 more source

Hydrogen Atom Transfer Induces Photodegradation in Carbonyl‐Based Multi‐Resonance TADF Emitters

Angewandte Chemie, EarlyView.
Boosting triplet harvesting in N/C═O MR‐TADF emitters unexpectedly induces rapid photodegradation under oxygen‐free conditions. Spectroscopic studies reveal that triplet excited states trigger hydrogen‐atom transfer from solvent to the carbonyl unit, driven by triplet energetics and hydrogen electrophilicity.
Changfeng Si, Elvie F. P. Beaumont, Jenn Zi Yu Tan, Mitchell J. Demchuk, Zachary M. Hudson   +4 more
wiley   +2 more sources

Circularly polarized OLEDs from chiral plasmonic nanoparticle-molecule hybrids

Nature Communications
Organic light-emitting diodes (OLEDs) supporting the direct emission of circularly polarized (CP) light are essential for numerous technologies. The realization of CP-OLEDs with large dissymmetry (g EL) factors and high external quantum efficiencies ...
Jiapeng Zheng, Yuang Fu, Jing Wang, Wei Zhang, Xinhui Lu, Hai-Qing Lin, Lei Shao, Jianfang Wang   +7 more
doaj   +1 more source

Realization of high-efficiency fluorescent organic light-emitting diodes with low driving voltage

Nature Communications, 2019
Though organic light-emitting diodes (OLEDs) with electroluminescence at sub-bandgap voltages have been reported, realizing high efficiency in such a device is difficult.
Amin Salehi, Chen Dong, Dong-Hun Shin, Liping Zhu, Christopher Papa, Anh Thy Bui, Felix N. Castellano, Franky So   +7 more
doaj   +1 more source

Solution‐Shearing of Highly Smooth Ion‐Gel Thin Films: Facilitating the Deposition of Organic Semiconductors for Ion‐Gated Organic Field Effect Transistors

Advanced Electronic Materials, Volume 11, Issue 6, May 2025.
A straightforward method is introduced to produce ion‐gel films with very low surface roughness by employing a solution‐shearing coating process. These ion‐gel films permit the growth of crystalline thin films of various small molecule organic semiconductor molecules directly on top of the ion‐gel layer, thereby enabling “inverted” small molecule ...
Jonathan Perez Andrade, Angelika Wrzesińska‐Lashkova, Anupam Prasoon, Felix Talnack, Katherina Haase, Bernd Büchner, Xinliang Feng, Yana Vaynzof, Mike Hambsch, Yulia Krupskaya, Stefan C. B. Mannsfeld   +10 more
wiley   +1 more source

Impact of thermal transport parameters on the operating temperature of OLEDs

, 2018
Excess heat in organic light emitting diodes (OLEDs) that is produced during their operation may accelerate their degradation and may cause an inhomogeneous brightness distribution, in particular in large area OLEDs.
Krikun, Georgii, Zojer, Karin
core   +1 more source