A5008659926- Organic Electronics and Photovoltaics
- Molecular Junctions and Nanostructures
- Conducting polymers and applications
- Graphene research and applications
- Nanowire Synthesis and Applications
- Perovskite Materials and Applications
- Thin-Film Transistor Technologies
- Advanced Memory and Neural Computing
- Fullerene Chemistry and Applications
- Fuel Cells and Related Materials
- 2D Materials and Applications
- Quantum and electron transport phenomena
- Advanced Chemical Sensor Technologies
- Organic and Molecular Conductors Research
- Chalcogenide Semiconductor Thin Films
- TiO2 Photocatalysis and Solar Cells
- Semiconductor materials and interfaces
- Carbon Nanotubes in Composites
- Advanced Photocatalysis Techniques
- Analytical Chemistry and Sensors
- Photoreceptor and optogenetics research
- Electrocatalysts for Energy Conversion
- Silicon and Solar Cell Technologies
- MXene and MAX Phase Materials
- Electronic and Structural Properties of Oxides
University of Nova Gorica
2015-2024
School Centre Nova Gorica
2002-2005
Activation energy for charge transport, carrier concentration and recombination rate are identified to strongly affect the device characteristics.
Contact resistance is a multifaceted challenge faced by the 2D materials community. Large Schottky barrier heights and gap-state pinning are active obstacles that require an integrated approach to achieve development of high-performance electronic devices based on materials. In this work, we present semiconducting PtSe2 field effect transistors with all-van-der-Waals electrode dielectric interfaces. We use graphite contacts, which enable high ION/IOFF ratios up 109 currents above 100 μA μm–1...
Charge transport through a randomly oriented multilayered network of two-dimensional (2D) Ti3C2Tx (where Tx is the surface termination and corresponds to O, OH F) was studied using time-of-flight photoconductivity (TOFP) method, which highly sensitive distribution charge carrier velocities. We prepared samples comprising with thickness 12 nm or 6-monolayers. MXene flakes size up 16 μm were deposited on by spin-coating from water solution. Using TOFP, we have measured electron mobility that...
A π-conjugated tetrathiafulvalene-fused perylenediimide (TTF-PDI) molecular dyad is successfully used as a solution-processed active material for light sensitive ambipolar field-effect transistors with balanced hole and electron mobilities. The photo-response of the TTF-PDI resembles its absorption profile. Wavelength-dependent photoconductivity measurements reveal an important at energy corresponding to PDI-localized electronic π–π* transition also more moderate effect due intramolecular...
Self-standing nanostructures are of fundamental interest in materials science and nanoscience widely used (opto-)electronic photonic devices as well micro-electromechanical systems. To date, large-area self-standing nanoelectrode arrays assembled on flexible substrates have not been reported. Here the fabrication a hollow nanomesh scaffold glass plastic with large surface area over 1 mm2 ultralow leakage current density (≈1-10 pA mm-2 @ 2 V) across empty is demonstrated. Thanks to continuous...
Sensitization of graphene with inorganic semiconducting nanostructures has been demonstrated as a powerful strategy to boost its optoelectronic performance. However, the limited tunability optical properties and toxicity metal cations in sensitizers prohibits their widespread applications, in-depth understanding essential interfacial charge-transfer process within such hybrid systems remains elusive. Here, we design develop high-quality nanographene (NG) dispersions large-scale production...
The present work describes novel polymer-based nanocomposite anion-exchange membranes (AEMs) with improved features for direct alkaline fuel cell applications. AEMs based on chitosan (CS), magnesium hydroxide (Mg(OH)2), and graphene oxide (GO) benzyltrimethylammonium chloride (BTMAC) as the conductor were fabricated by a solvent casting method. To impart better mechanical properties suppressed swelling, enzymatic cross-linking dodecyl 3,4,5-trihydroxybenzoate having C-10 alkyl chain was...
A catalytic system based on iron phosphide (Fe2P) has exhibited electrocatalytic activity toward N2-reduction reaction in alkaline medium (0.5 mol dm−3 NaOH). Based voltammetric stripping-type electroanalytical measurements, Raman spectroscopic and spectrophotometric data, it can be stated that the Fe2P catalyst facilitates conversion of N2 to NH3, process is fairly selective with respect competing hydrogen evolution. series diagnostic experiments (utilizing platinum nanoparticles HKUST-1)...
The synthesis of four new TTF derivatives bearing phthalimides and fluorinated alkyl moieties as potential ambipolar semiconductors is described. presence such electron-withdrawing groups permits the stabilization energy HOMO LUMO orbitals. solid-state structures these novel molecules have been characterized by X-ray diffraction techniques. materials hole electron conductors has estimated under theoretical considerations evaluating position frontier levels well their charge carrier...
Crystalline dioctyl-3,4,9,10-perylenedicarboximide nanowires and 6,13-bis(triisopropylsilylethynyl) pentacene microplates are integrated into a vertical-yet-open asymmetrical heterojunction for the realization of high-performance organic photovoltaic detector, which shows fast photoresponse, ultrahigh signal-to-noise ratio, high sensitivity to weak light.
Views Icon Article contents Figures & tables Video Audio Supplementary Data Peer Review Share Twitter Facebook Reddit LinkedIn Tools Reprints and Permissions Cite Search Site Citation Egon Pavlica, Gvido Bratina; Time-of-flight mobility of charge carriers in position-dependent electric field between coplanar electrodes. Appl. Phys. Lett. 27 August 2012; 101 (9): 093304. https://doi.org/10.1063/1.4742149 Download citation file: Ris (Zotero) Reference Manager EasyBib Bookends Mendeley Papers...
The rich phase behavior of 5,11-bis(triethylsilylethynyl) anthradithiophene (TES ADT) – one the most promising, solution-processable small-molecular organic semiconductors is analyzed, revealing highest performing polymorph among four solid-state phases, opening pathways toward reliable fabrication high-performance bottom-gate/bottom-contact transistors.
Semiconducting mesocrystalline bulk polymer specimens that exhibit near-intrinsic properties using channel-die pressing are demonstrated. A predominant edge-on orientation is obtained for poly(3-hexylthiophene-2,5-diyl) (P3HT) throughout 2 mm-thick/wide samples. This persistent arrangement at macroscopic scales allows reliable evaluation of the electronic charge-transport anisotropy along all three crystallographic axes, with high mobilities found π-stacking. Indeed, charge-carrier up to 2.3...
Atomic force microscopy has been used to examine early stages of pentacene growth on exfoliated single-layer graphene transferred SiO2 substrates. We have observed 2D with mean height 1.5 ± 0.2 nm as-transferred graphene. Three-dimensional islands an average 11 2 were that was annealed at 350 °C prior growth. Compellingly similar 3D morphology onto treated hexamethyldisilazane the transfer On multilayer we growth, regardless treatment SiO2. interpret this behavior molecules in terms...
A hybrid titania-silica cold-setting sol has been developed that can be deposited onto a wide variety of surfaces without the need for high-temperature fixing and is suitable material printing deposition. Thin coatings were patterned glass PET substrates by inkjet printing. Well-defined patterns, with thicknesses ranging from 40 to 400 nm, fabricated overprinting 1 10 layers. Excellent mechanical, optical, photocatalytic properties observed, making reported well suited fabrication...
Here, we report a simple, alternative route towards high-mobility structures of the small-molecular semiconductor 5,11-bis(triethyl silylethynyl) anthradithiophene that requires one single processing step without need for any post-deposition processing. The method relies on careful control casting temperature and allows rapid production transistors with uniform reproducible device performance over large areas.
We report a joint experimental and theoretical study on the electronic structure solid-state organisation of bis(naphthoquinone)-tetrathiafulvalene (BNQ-TTF) as promising ambipolar semiconductor. Accordingly, organic field-effect transistors (OFETs) fabricated with this material show both hole electron transport for first time in TTF derivatives.