| People | Locations | Statistics |
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| Naji, M. |
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| Motta, Antonella |
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| Aletan, Dirar |
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| Mohamed, Tarek |
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| Ertürk, Emre |
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| Taccardi, Nicola |
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| Kononenko, Denys |
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| Petrov, R. H. | Madrid |
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| Alshaaer, Mazen | Brussels |
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| Bih, L. |
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| Casati, R. |
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| Muller, Hermance |
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| Kočí, Jan | Prague |
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| Šuljagić, Marija |
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| Kalteremidou, Kalliopi-Artemi | Brussels |
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| Azam, Siraj |
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| Ospanova, Alyiya |
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| Blanpain, Bart |
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| Ali, M. A. |
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| Popa, V. |
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| Rančić, M. |
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| Ollier, Nadège |
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| Azevedo, Nuno Monteiro |
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| Landes, Michael |
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| Rignanese, Gian-Marco |
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Brütting, Wolfgang
University of Augsburg
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (9/9 displayed)
- 2022Improved order and transport in C60 thin films grown on SiO2 via use of transient templatescitations
- 2022Improved order and transport in C$_{60}$ thin films grown on SiO$_2$ via use of transient templatescitations
- 2020Conductive polymer work function changes due to residual water: impact of temperature-dependent dielectric constantcitations
- 2020What controls the orientation of TADF emitters?citations
- 2020Conductive Polymer Work Function Changes due toResidual Water: Impact of Temperature-DependentDielectric Constant
- 2015Thermally driven smoothening of molecular thin films: Structural transitions in n-alkane layers studied in real-timecitations
- 2010High-mobility copper-phthalocyanine field-effect transistors with tetratetracontane passivation layer and organic metal contactscitations
- 2009Molecular semiconductor blends: microstructure, charge carrier transport, and application in photovoltaic cellscitations
- 2000Kelvin probe investigations of metal work functions and correlation to device performance of organic light-emitting devicescitations
Places of action
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article
Kelvin probe investigations of metal work functions and correlation to device performance of organic light-emitting devices
Abstract
sing the vibrating capacitor Kelvin probe technique, we have determined the contact potential difference (CPD) between a reference electrode and various metals acting as charge carrier injecting contacts in organic light-emitting devices (OLEDs). These investigations show that the work function of anode materials for OLEDs such as Pt, Au, and indium tin oxide depends strongly on the surface treatment and can be increased by more than 1 eV via oxygen plasma or UV-ozone cleaning. The device performance of multilayer OLEDs consisting of these anodes, copper-phthalocyanine (CuPc), N , N ′-di(naphthalene-1-yl)- N , N ′-diphenyl-benzidine (NPB), tris-(8-hydroxyquinolinato)aluminum (Alq 3 ), and a low-work-function metal cathode is correlated with the results of the CPD measurements. However, our investigations indicate that, apart from the measured work function, other factors such as the surface roughness and the binding energy of oxygen to the metal surface can significantly influence the injection properties and the long-term stability of the devices.