Scientific Publications
![Optical Alignment of Si-Containing Nanodomains Formed by Photoresponsive Amorphous Block Copolymer Thin Films](/images/pixel.gif)
A series of amorphous block copolymers (BCPs), consisting of a low-glass-transition polydimethylsiloxane (PDMS) block associated with a photoresponsive azobenzene-containing poly(disperse red 1...
![p-Doping of a Hole Transport Material via a Poly(ionic liquid) for over 20% Efficiency and Hysteresis-Free Perovskite Solar Cells](/images/pixel.gif)
An efficient metal-free formulation of a hole transport material (HTM) based on an ionic liquid polymer is developed for n–i–p perovskite solar cells (PSCs), to address reproducibility issues...
![AFM images of height and phase of fluorinated polymer blend films at different terpolymer/copolymer ratios (100/0, 95/5, 90/10, 80/20, 70/30, 0/100) (tapping mode, 1 µm × 1 µm scan area).](/images/pixel.gif)
Relaxor ferroelectric polymers exhibit high k at their structural phase transition around room temperature. They are particularly attractive as gate dielectric in organic field effect transistor...
![Synthesis of Carboxyl-EDOT as a Versatile Addition and Additive to PEDOT:PSS](/images/pixel.gif)
Two-step synthesis of EDOT (3,4-ethylenedioxythiophene) derivate bearing a carboxylic acid group (carboxyl-EDOT) is presented. This reactive monomer has been copolymerized with EDOT to afford PEDOT...
![Post-functionalization of polyvinylcarbazoles: An open route towards hole transporting materials for perovskite solar cells](/images/pixel.gif)
We report on the potential of tuning poly(9-vinylcarbazole) (PVK) properties through functionalization for an application as hole transport material (HTM) for perovskite solar cells (PSCs). The...
![A ferroelectric polymer introduces addressability in electrophoreticdisplay cells](/images/pixel.gif)
During the last decades, tremendous efforts have been carried out to develop flexible electronics for a vast array of applications. Among all different applications investigated in this area,...
![Bicontinuous Network Nanostructure with Tunable Thickness Formed on Asymmetric Triblock Terpolymer Thick Films](/images/pixel.gif)
Asymmetric poly(1,1-dimethyl silacyclobutane)- block -polystyrene- block -poly(2-vinyl pyridine) (PDMSB- b -PS- b -P2VP) thick films, consisting of a spongelike substructure topped by a...
![Periodic Bicontinuous Structures Formed on the Top Surface of Asymmetric Triblock Terpolymer Thick Films](/images/pixel.gif)
The combination of the nonsolvent-induced phase separation (NIPS) process with a solvent vapor annealing (SVA) treatment is used to produce asymmetric and hydrophobic thick films having different...
![Tuning the rheology of polymer conducting inks for various deposition processes](/images/pixel.gif)
Organic semiconducting polymers are attractive because of their competitive price and low processability requirements. Aqueous solutions of these polymers can be deposited with a variety of...
![Photopatternable High-k Fluoropolymer Dielectrics Bearing Pendent Azido Groups](/images/pixel.gif)
Photopatternable fluoropolymers with high dielectric constant were prepared by direct azidation of commercially available poly(vinylidene fluoride-trifluoroethylene-chlorotrifluoroethylene). The...
![Introducing Functionality to Fluorinated Electroactive Polymers](/images/pixel.gif)
Fluorinated electroactive polymers (FEPs) are among the most interesting insulating materials for the production of organic electronic devices. Their ability to tune their response to an applied...
![Role of Oxide/Metal Bilayer Electrodes in Solution Processed Organic Field Effect Transistors](/images/pixel.gif)
High performance, air stable and solution-processed small molecule 2,7-dioctyl[1]benzothieno[3,2-b]benzothiophene (C 8 -BTBT) based organic field-effect transistors (OFETs) with various electrode...
![Materials for Transparent Electrodes: From Metal Oxides to Organic Alternatives](/images/pixel.gif)
Optoelectronic devices, such as displays, are now omnipresent in our daily life. A crucial component of these devices is a transparent electrode, which allows the in‐ and outcoupling of light. With...
![A Multifunctional Interlayer for Solution Processed High Performance Indium Oxide Transistors](/images/pixel.gif)
Multiple functionality of tungsten polyoxometalate (POM) has been achieved applying it as interfacial layer for solution processed high performance In 2 O 3 thin film transistors, which results in...
![Vertical Tunnel Junction Embedding a Spin Crossover Molecular Film](/images/pixel.gif)
Thin films of a molecular spin crossover (SCO) Iron(II) complex featuring a high transition temperature are grown by sublimation in high vacuum on TS Au and investigated by X‐ray and UV...
![Tridodecylamine, an efficient charge control agent in non-polar media for electrophoretic inks application](/images/pixel.gif)
In order to obtain efficient electrophoretic inks, Tridodecylamine (Dod 3 N), has been studied as charge control agent (CCA) in a non-polar paraffin solvent (Isopar G) for various inorganic pigments...
![Correlating the Seebeck coefficient of thermoelectric polymer thin films to their charge transport mechanism](/images/pixel.gif)
Room temperature flexible heat harvesters based on conducting polymers are ideally suited to cover the energy demands of the modern nomadic society. The optimization of their thermoelectric ...
![Surface relief gratings formed by microphase-separated disperse red 1 acrylate-containing diblock copolymers](/images/pixel.gif)
Sinusoidal surface-relief gratings (SRGs) formed by microphase separated photoresponsive poly(dimethylsiloxane)- block -poly(methyl acrylate- co -disperse red 1 acrylate) (PDMS- b -P(MA- co -DR1A))...
![Metallic Nanodot Patterns with Unique Symmetries Templated from ABC Triblock Terpolymer Networks](/images/pixel.gif)
Nanotemplates derived from the self-assembly of AB-type block copolymers provide an elegant route to achieve well-defined metallic dot arrays, even if the variety of pattern symmetries is restricted...
![Core-Shell Double Gyroid Structure Formed by Linear ABC Terpolymer Thin Films](/images/pixel.gif)
The synthesis and self‐assembly in thin‐film configuration of linear ABC triblock terpolymer chains consisting of polystyrene (PS), poly(2‐vinylpyridine) (P2VP), and polyisoprene (PI) are described....
![Nanoscale Archimedean Tilings Formed by 3-Miktoarm Star Terpolymer Thin Films](/images/pixel.gif)
3‐Miktoarm star terpolymer architecture (3 µ ‐ABC), consisting of three dissimilar polymer chains, A, B, and C connected at a junction point, provides a unique opportunity in the design of complex...
![Micellar-Mediated Block Copolymer Ordering Dynamics Revealed by In-Situ Grazing Incidence Small-Angle X-ray Scattering during Spin Coating](/images/pixel.gif)
Spin coating is one of the most versatile methods to generate nanostructured block copolymer (BCP) thin films which are highly desired for many applications such as nanolithography or organic...
![Enhancing the ferroelectric performance of P(VDF-co-TrFE) through modulation of crystallinity and polymorphism](/images/pixel.gif)
The functional properties of P(VDF- co -TrFE) are strongly dependent on its structure, which, in turn, depends on processing conditions applied. In this work we investigate the P(VDF- co -TrFE)...
![Synthesis of Bioinspired Curcuminoid Small Molecules for Solution-Processed Organic Solar Cells with High Open-Circuit Voltage](/images/pixel.gif)
Borondifluoride complexes of curcuminoid derivatives end-capped with triphenylamine groups were designed for solution-processed bulk-heterojunction organic solar cells. They were obtained very...
![Aqueous PCDTBT:PC71BM Photovoltaic Inks Made by Nanoprecipitation](/images/pixel.gif)
The fabrication of organic solar cells from aqueous dispersions of photoactive nanoparticles has recently attracted the interest of the photovoltaic community, since these dispersions offer an...
![Mechanical strain induced changes in electrical characteristics of flexible, non-volatile ferroelectric OFET based memory](/images/pixel.gif)
Investigation of mechanical strain on the electrical characteristics of ferroelectric OFET base memory is crucial for novel flexible printed circuit . In this regards, the effects of compressive...
![Photoactive donor-acceptor composite nanoparticles dispersed in water](/images/pixel.gif)
A major issue that inhibits the large-scale fabrication of organic solar modules is the use of chlorinated solvents considered to be toxic and hazardous. In this work, composite particles of...
![Highly ordered nanoring arrays formed by template Si-containing triblock terpolymer thin films](/images/pixel.gif)
Laterally ordered nanorings with a periodicity of 38 nm are produced from the directed self‐assembly of poly(1,1‐dimethylsilacyclobutane)‐ block ‐polystyrene‐ block ‐poly(methyl methacrylate) thin...
![Templated Sub-100-nm-Thick Double-Gyroid Structure from Si-Containing Block Copolymer Thin Films](/images/pixel.gif)
The directed self-assembly of diblock copolymer chains (poly(1,1-dimethyl silacyclobutane)-block-polystyrene, PDMSB-b-PS) into a thin film double gyroid structure is described. A decrease of the...
![All inkjet-printed piezoelectric electronic devices: energy generators, sensors and actuators](/images/pixel.gif)
Inkjet printing is considered to be a key technology in the field of flexible electronics due to its capability to deposit different types of materials in a controlled and defined manner. However,...
![Archimedean Tilings and Hierarchical Lamellar Morphology Formed by Semicrystalline Miktoarm Star Terpolymer Thin Films](/images/pixel.gif)
3-Miktoarm star terpolymer architecture provides a window of opportunity in the design of complex “three-colored” patterns at the nanometer scale. Here, thedirected self-assembly (DSA) of 3-miktoarm...
![Heteroleptic iridium (III) complexes with three different ligands:Unusual triplet emitters for light-emitting electrochemical cells](/images/pixel.gif)
Two cationic iridium (III) complexes [Ir(dfppy)(tpy)(bpy)](PF 6 ) and [Ir(dfppy)(tpy)(phen)](PF 6 ) bearing three different ligands were tested as triplet emitters for...
![Solution-Processed p-Dopant as Interlayer in Polymer Solar Cells](/images/pixel.gif)
We report here an original approach to dope the semiconducting polymer–metal interface in an inverted bulk-heterojunction (BHJ) organic solar cell. Solution-processed...
![Evidence of band bending induced by hole trapping at MAPbI3 perovskite/metal interface](/images/pixel.gif)
Electron injection by tunneling from a gold electrode and hole transport properties in polycrystalline MAPbI 3 has been investigated using variable temperature experiments and numerical...
![Piezoelectric polymer gated OFET: Cutting-edge electro-mechanical transducer for organic MEMS-based sensors](/images/pixel.gif)
The growth of micro electro-mechanical system (MEMS) based sensors on the electronic market is forecast to be invigorated soon by the development of a new branch of MEMS-based sensors made of...
![Long-Term Stable Organic Photodetectors with Ultra Low Dark Currents for High Detectivity Applications](/images/pixel.gif)
Printed organic photodetectors can transform plastic, paper or glass into smart surfaces. This innovative technology is now growing exponentially due to the strong demand in human-machine...
![How To Choose Polyelectrolytes for Aqueous Dispersions of Conducting PEDOT Complexes](/images/pixel.gif)
By using different polysaccharide and polysulfonylimide type polyelectrolytes for the synthesis of aqueous PEDOT:polyelectrolyte dispersions, the influence of the polyelectrolyte backbone and of the...
![An Alternative Anionic Polyelectrolyte for Aqueous PEDOT Dispersions: Toward Printable Transparent Electrodes](/images/pixel.gif)
Organic conducting polymers are promising electrode materials for printable organic electronics. One of the most studied conducting polymers is PEDOT:PSS, which is sufficiently conductive and...
![Solution-processed blue phosphorescent OLEDs with carbazole-based polymeric host materials](/images/pixel.gif)
Abstract A new carbazole-based polymer PEPEK varying from the previously reported PEPK by the length of the spacer between the polymer backbone and the pendent carbazole moiety was investigated as...
![Lanthanum Hexaboride As Novel Interlayer for Improving the Thermal Stability of P3HT:PCBM Organic Solar Cells](/images/pixel.gif)
For efficient organic photovoltaic (OPV) solar cells, a low work function electrode is necessary to enhance the built-in voltage of the active layer, thereby improving the overall efficiency....