Search Results - "Coehoorn, Reinder"
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Molecular Origin of the Anisotropic Dye Orientation in Emissive Layers of Organic Light Emitting Diodes
Published in Chemistry of materials (14-11-2017)“…Molecular orientation anisotropy of the emitter molecules used in organic light emitting diodes (OLEDs) can give rise to an enhanced light-outcoupling…”
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High energy acceptor states strongly enhance exciton transfer between metal organic phosphorescent dyes
Published in Nature communications (10-03-2020)“…Exciton management in organic light-emitting diodes (OLEDs) is vital for improving efficiency, reducing device aging, and creating new device architectures. In…”
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Experimental investigation on the thermal performance of three-dimensional vapor chamber for LED automotive headlamps
Published in Applied thermal engineering (05-07-2019)“…•A 3D VC with an integrated structure for LED automotive headlamps was fabricated.•The thermal performance of the 3D VC under different conditions was…”
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Kinetic Monte Carlo Study of the Sensitivity of OLED Efficiency and Lifetime to Materials Parameters
Published in Advanced functional materials (01-04-2015)“…The performance of organic light‐emitting diodes (OLEDs) is determined by a complex interplay of the optoelectronic processes in the active layer stack. In…”
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Molecular-scale simulation of electroluminescence in a multilayer white organic light-emitting diode
Published in Nature materials (01-07-2013)“…In multilayer white organic light-emitting diodes the electronic processes in the various layers—injection and motion of charges as well as generation,…”
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Ionic liquid-modified ZnO-based electron transport layer for inverted organic solar cells
Published in Journal of materials science. Materials in electronics (01-08-2020)“…In this work, a novel ionic liquid (IL) is demonstrated as an interface modification layer in photovoltaic devices to improve power conversion efficiency (PCE)…”
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Identification of OLED Degradation Scenarios by Kinetic Monte Carlo Simulations of Lifetime Experiments
Published in Frontiers in chemistry (27-01-2022)“…We show how three-dimensions kinetic Monte Carlo simulations can be used to carry out an operational lifetime study of thermally activated delayed fluorescence…”
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Ambipolar charge transport in organic field-effect transistors
Published in Physical review. B, Condensed matter and materials physics (01-05-2006)Get full text
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3.5: Advanced modeling of OLEDs: physics and applications
Published in SID International Symposium Digest of technical papers (01-10-2022)Get full text
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Charge Transport by Superexchange in Molecular Host-Guest Systems
Published in Physical review letters (30-12-2016)“…Charge transport in disordered organic semiconductors is generally described as a result of incoherent hopping between localized states. In this work, we focus…”
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An integrated heat pipe coupling the vapor chamber and two cylindrical heat pipes with high anti-gravity thermal performance
Published in Applied thermal engineering (01-08-2019)“…•An integrated heat pipe is designed, built and tested in this study.•The performance of the heat pipe under different conditions was tested.•The lowest…”
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Single-layer method for quantifying the triplet exciton diffusion coefficient in disordered organic semiconductor materials
Published in Organic electronics (01-02-2020)“…We propose an easy-to-use method for determining the triplet exciton diffusivity in disordered organic semiconductors using single-layer films containing a…”
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Effect of Triplet Confinement on Triplet–Triplet Annihilation in Organic Phosphorescent Host–Guest Systems
Published in Advanced functional materials (27-12-2018)“…The efficiency of phosphorescent organic light emitting diodes (OLEDs) shows a decrease with increasing luminance (“roll‐off”). One of the contributions to the…”
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On the Origin of Dark Current in Organic Photodiodes
Published in Advanced optical materials (01-01-2020)“…Minimizing the reverse bias dark current while retaining external quantum efficiency is crucial if the light detection sensitivity of organic photodiodes…”
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Relating Frontier Orbital Energies from Voltammetry and Photoelectron Spectroscopy to the Open‐Circuit Voltage of Organic Solar Cells
Published in Advanced energy materials (13-03-2019)“…For 19 diketopyrrolopyrrole polymers, the highest occupied molecular orbital (HOMO) energies are determined from i) the oxidation potential with square‐wave…”
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Mechanistic description of the efficiency loss in organic phosphorescent host–guest systems due to triplet-polaron quenching
Published in Organic electronics (01-04-2021)“…In this study we demonstrate how a mechanistic description can be obtained of the interplay of all processes that give rise to the efficiency loss due to…”
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Ab initio modeling of steady-state and time-dependent charge transport in hole-only α-NPD devices
Published in Applied physics letters (12-12-2016)“…We present an ab initio modeling study of steady-state and time-dependent charge transport in hole-only devices of the amorphous molecular semiconductor α –…”
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52.3: Disentangling Excitonic Loss Mechanisms in TADF‐Type OLEDs Using Kinetic Monte Carlo Simulations
Published in SID International Symposium Digest of technical papers (01-09-2019)Get full text
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Near-Infrared Light-Emitting Ambipolar Organic Field-Effect Transistors
Published in Advanced materials (Weinheim) (05-03-2007)“…Near‐IR light‐emitting ambipolar OFETs are demonstrated, employing a squaraine derivative as the electroactive layer. Efficient control of the emission‐region…”
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