| 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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Von Hauff, Elizabeth
Fraunhofer Society
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (27/27 displayed)
- 2024Volumetric 3D-Printed Piezoelectric Polymer Filmscitations
- 2021Correlating Ultrafast Dynamics, Liquid Crystalline Phases, and Ambipolar Transport in Fluorinated Benzothiadiazole Dyescitations
- 2021Correlating Ultrafast Dynamics, Liquid Crystalline Phases, and Ambipolar Transport in Fluorinated Benzothiadiazole Dyescitations
- 2019Air-stable and oriented mixed lead halide perovskite (FA/MA) by the one-step deposition method using Zinc Iodide and an Alkylammonium additivecitations
- 2019Relating Chain Conformation to the Density of States and Charge Transport in Conjugated Polymers:The Role of the β -phase in Poly(9,9-dioctylfluorene)citations
- 2019Air-Stable and Oriented Mixed Lead Halide Perovskite (FA/MA) by the One-Step Deposition Method Using Zinc Iodide and an Alkylammonium Additivecitations
- 2019Relating Chain Conformation to the Density of States and Charge Transport in Conjugated Polymers: The Role of the β -phase in Poly(9,9-dioctylfluorene)citations
- 2019Relating Chain Conformation to the Density of States and Charge Transport in Conjugated Polymerscitations
- 2018Extraordinary Interfacial Stitching between Single All-Inorganic Perovskite Nanocrystalscitations
- 2018Extraordinary Interfacial Stitching between Single All-Inorganic Perovskite Nanocrystalscitations
- 2016High-Permittivity Conjugated Polyelectrolyte Interlayers for High-Performance Bulk Heterojunction Organic Solar Cellscitations
- 2016High-Permittivity Conjugated Polyelectrolyte Interlayers for High-Performance Bulk Heterojunction Organic Solar Cellscitations
- 2015Imaging of morphological changes and phase segregation in doped polymeric semiconductorscitations
- 2015Imaging of morphological changes and phase segregation in doped polymeric semiconductorscitations
- 2013Silica Nanoparticles for Enhanced Carrier Transport in Polymer-Based Short Channel Transistorscitations
- 2013Silica Nanoparticles for Enhanced Carrier Transport in Polymer-Based Short Channel Transistorscitations
- 2013Thiophene-based copolymers synthesized by electropolymerization for application as hole transport layer in organic solar cellscitations
- 2013Interpreting the density of states extracted from organic solar cells using transient photocurrent measurementscitations
- 2012The Effect of Ageing on Exciton Dynamics, Charge Separation, and Recombination in P3HT/PCBM Photovoltaic Blendscitations
- 2012The Effect of Ageing on Exciton Dynamics, Charge Separation, and Recombination in P3HT/PCBM Photovoltaic Blendscitations
- 2012Influence of different copolymer sequences in low band gap polymers on their performance in organic solar cellscitations
- 2012ITO-free inverted polymer/fullerene solar cells: Interface effects and comparison of different semi-transparent front contactscitations
- 2012Influence of molecular weight on the short-channel effect in polymer-based field-effect transistorscitations
- 2011The Role of Molecular Structure and Conformation in Polymer Electronicscitations
- 2009Electrochemical Synthesis of Polypyrrole Layers Doped with Glutamic Ionscitations
- 2008Binding and release of glutamate from overoxidized polypyrrole via an applied potential for application as a molecular switchcitations
- 2005Diphenylmethanofullerenes: New and efficient acceptors in bulk-heterojunction solar cellscitations
Places of action
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article
Influence of molecular weight on the short-channel effect in polymer-based field-effect transistors
Abstract
In this study, we demonstrate how the intrinsic properties of a polymer can influence the electrical characteristics of organic field-effect transistors (OFETs). OFETs fabricated with three batches of poly[2-methoxy,5-(3′,7′-dimethyl-octyloxy)]-p-phenylene vinylene (MDMO-PPV) were investigated. The properties of the polymers were initially investigated using Fourier transform infrared spectroscopy (FTIR), impedance spectroscopy (IS), gel permeation chromotography (GPC), and cyclic voltammetry (CV), respectively. The structure and purity of the polymer batches were found to be very comparable, but the molecular weight (Mn and Mw) and polydispersity (PDI = Mw/Mn), varied between the samples and the HOMO and LUMO levels of the polymers were found to depend on the molecular weight properties. OFETs were then fabricated with the polymers and electrically characterized. It was observed that the channel current and the field-effect mobility increase with increasing polymer molecular weight. The output characteristics of the transistors, on the other hand, were found to depend on the PDI of the polymer. Saturation of the channel current occurs at higher source–drain voltages and short-channel behavior was observed to start at longer channel lengths for polymers with a higher PDI. This behavior is observed to be thickness dependent, and the short-channel behavior was more pronounced for thicker MDMO-PPV films. These results are explained in terms of influences of chain packing and ordering and high bulk currents on the FET output and transistor parameters. © 2011 Wiley Periodicals, Inc. J Polym Sci Part B: Polym Phys 50: 117–124, 2012<br/>