| 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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Kemerink, Martijn
Heidelberg University
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (31/31 displayed)
- 2024Electrically Programmed Doping Gradients Optimize the Thermoelectric Power Factor of a Conjugated Polymercitations
- 2024Electrically Programmed Doping Gradients Optimize the Thermoelectric Power Factor of a Conjugated Polymercitations
- 2023Spontaneous Modulation Doping in Semi‐Crystalline Conjugated Polymers Leads to High Conductivity at Low Doping Concentrationcitations
- 2022On the Origin of Seebeck Coefficient Inversion in Highly Doped Conducting Polymerscitations
- 2022Charge transport in doped conjugated polymers for organic thermoelectricscitations
- 2020Rubbing and Drawing: Generic Ways to Improve the Thermoelectric Power Factor of Organic Semiconductors?citations
- 2019Suppressing depolarization by tail substitution in an organic supramolecular ferroelectriccitations
- 2019Photogenerated Charge Transport in Organic Electronic Materials: Experiments Confirmed by Simulationscitations
- 2019Pulsed Terahertz Emission from Solution-Processed Lead Iodide Perovskite Filmscitations
- 2019Enhanced Thermoelectric Power Factor of Tensile Drawn Poly(3-hexylthiophene)citations
- 2019Impact of Singly Occupied Molecular Orbital energy on the n-doping efficiency of benzimidazole-derivativescitations
- 2018Dead Ends Limit Charge Carrier Extraction from All-Polymer Bulk Heterojunction Solar Cellscitations
- 2017Enhanced Electrical Conductivity of Molecularly p-Doped Poly(3-hexylthiophene) through Understanding the Correlation with Solid-State Ordercitations
- 2017Enhanced Electrical Conductivity of Molecularly p-Doped Poly(3-hexylthiophene) through Understanding the Correlation with Solid-State Order.citations
- 2016Data retention in organic ferroelectric resistive switchescitations
- 2016Data retention in organic ferroelectric resistive switchescitations
- 2015Modeling Anomalous Hysteresis in Perovskite Solar Cellscitations
- 2015Surface Directed Phase Separation of Semiconductor Ferroelectric Polymer Blends and their Use in Non-Volatile Memoriescitations
- 2015Surface directed phase separation of semiconductor ferroelectric polymer blends and their use in non-volatile memoriescitations
- 2015Microstructured organic ferroelectric thin film capacitors by solution micromoldingcitations
- 2014Photoluminescence quenching in films of conjugated polymers by electrochemical dopingcitations
- 2014Photoluminescence quenching in films of conjugated polymers by electrochemical dopingcitations
- 2012Unusual thermoelectric behavior indicating a hopping to band-like transport transition in pentacenecitations
- 2012Dynamic processes in sandwich polymer light-emitting electrochemical cellscitations
- 2012Charge transport in amorphous InGaZnO thin film transistorscitations
- 2011Salt concentration effects in planar light-emitting electrochemical cellscitations
- 2011Description of the morphology dependent charge transport and performance of polymer: fullerene bulk heterojunction solar cellscitations
- 2010A unifying model for the operation of light-emitting electrochemical cellscitations
- 2009Scanning kelvin probe microscopy on bulk heterojunction polymer blendscitations
- 2004Scanning tunneling spectroscopy on organic semiconductors : experiment and modelcitations
- 2003Scanning-tunneling spectroscopy on conjugated polymer films
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article
Scanning tunneling spectroscopy on organic semiconductors : experiment and model
Abstract
Scanning-tunneling spectroscopy expts. performed on conjugated polymer films are compared with three-dimensional numerical model calcns. for charge injection and transport. It is found that if a sufficiently sharp tip is used, the field enhancement near the tip apex leads to a significant increase in the injected current, which can amt. to more than an order of magnitude and can even change the polarity of the predominant charge carrier. We show that when charge injection from the tip into the org. material predominates, it is possible to probe the electronic properties of the interface between the org. material and a metallic electrode directly by means of tip height vs. bias voltage measurements. Thus, one can det. the alignment of the MO energy levels at the buried interface, as well as the single-particle band gap of the org. material. By comparing the single-particle energy gap and the optical absorption threshold, it is possible to obtain an est. of the exciton binding energy. In addn., our calcns. show that by using a one-dimensional model, reasonable parameters can only be extd. from z-V and I-V curves if the tip apex radius is much larger than the tip height. In all other cases, the full three-dimensional problem needs to be considered.