Search

Your search keyword '"Bednorz, Mateusz"' showing total 23 results
Start Over Author "Bednorz, Mateusz"
23 results on '"Bednorz, Mateusz"'

2. Sensitive and high laser damage threshold substrates for surface‐enhanced Raman scattering based on gold and silver nanoparticles

Author

Mayr, Felix, primary, Zimmerleiter, Robert, additional, Farias, Patricia M. A., additional, Bednorz, Mateusz, additional, Salinas, Yolanda, additional, Galembek, André, additional, Cardozo, Olavo D. F., additional, Wielend, Dominik, additional, Oliveira, Dyego, additional, Milani, Raquel, additional, Brito‐Silva, Tania M., additional, Brandstetter, Markus, additional, Padrón‐Hernández, Eduardo, additional, Burgholzer, Peter, additional, Stingl, Andreas, additional, Scharber, Markus C., additional, and Sariciftci, Niyazi Serdar, additional

Published
2023
Full Text
View/download PDF

3. Pinaceae Pine Resins (Black Pine, Shore Pine, Rosin, and Baltic Amber) as Natural Dielectrics for Low Operating Voltage, Hysteresis‐Free, Organic Field Effect Transistors

Author

Coppola, Maria Elisabetta, primary, Petritz, Andreas, additional, Irimia, Cristian Vlad, additional, Yumusak, Cigdem, additional, Mayr, Felix, additional, Bednorz, Mateusz, additional, Matkovic, Aleksandar, additional, Aslam, Muhammad Awais, additional, Saller, Klara, additional, Schwarzinger, Clemens, additional, Ionita, Maria Daniela, additional, Schiek, Manuela, additional, Smeds, Annika I., additional, Salinas, Yolanda, additional, Brüggemann, Oliver, additional, D'Orsi, Rosarita, additional, Mattonai, Marco, additional, Ribechini, Erika, additional, Operamolla, Alessandra, additional, Teichert, Christian, additional, Xu, Chunlin, additional, Stadlober, Barbara, additional, Sariciftci, Niyazi Serdar, additional, and Irimia‐Vladu, Mihai, additional

Published
2023
Full Text
View/download PDF

4. Amplifying the dielectric constant of shellac by incorporating natural clays for organic field effect transistors (OFETs).

Author

Sunwoo KIM, YUMUŞAK, Çiğdem, IRIMIA, Cristian Vlad, BEDNORZ, Mateusz, YENEL, Esma, KUŞ, Mahmut, SARIÇİFTÇİ, Niyazi Serdar, Bong Sup SHIM, and IRIMIA-VLADU, Mihai

Subjects
ORGANIC field-effect transistors, CLAY, PERMITTIVITY, ORGANIC semiconductors, FIELD-effect transistors, CAPACITANCE measurement
Abstract

We demonstrate in this work the practical use of uniform mixtures of a bioresin shellac and four natural clays, i.e. montmorillonite, sepiolite, halloysite and vermiculate as dielectrics in organic field effect transistors (OFETs). We present a thorough characterization of their processability and film forming characteristic, surface characterization, elaborate dielectric investigation and the fabrication of field effect transistors with two classic organic semiconductors, i.e. pentacene and fullerene C60. We show that low operating voltage of approximately 4 V is possible for all the OFETs using several combinations of clays and shellac. The capacitance measurements show an improvement of the dielectric constant of shellac by a factor of 2, to values in excess of 7 in the uniform mixtures of sepiolite and montmorillonite with this bioresin. [ABSTRACT FROM AUTHOR]

Published
2023
Full Text
View/download PDF

5. N,N'-substituted Quinacridones for Organic Electronic Devices Applications

Author

Saadi, Donia, primary, Mayr, Felix, additional, Yumusak, Cigdem, additional, Wielend, Dominik, additional, Cobet, Munise, additional, Kahraman, Bilge, additional, Irimia, Cristian Vlad, additional, Kanbur, Yasin, additional, Bednorz, Mateusz, additional, Kotwica, Kamil, additional, Ben Fredj, Amel, additional, Romdhane, Samir, additional, Scharber, Markus Clark, additional, Sariciftci, Niyazi Serdar, additional, and Irimia-Vladu, Mihai, additional

Published
2023
Full Text
View/download PDF

6. Kraft Lignin: From Pulping Waste to Bio‐Based Dielectric Polymer for Organic Field‐Effect Transistors (Adv. Sustainable Syst. 12/2022)

Author

D'Orsi, Rosarita, primary, Irimia, Cristian Vlad, additional, Lucejko, Jeannette J., additional, Kahraman, Bilge, additional, Kanbur, Yasin, additional, Yumusak, Cigdem, additional, Bednorz, Mateusz, additional, Babudri, Francesco, additional, Irimia‐Vladu, Mihai, additional, and Operamolla, Alessandra, additional

Published
2022
Full Text
View/download PDF

7. Materials Advances / N,N′-Substituted quinacridones for organic electronic device applications

Author

Saadi, Donia, Mayr, Felix, Yumusak, Cigdem, Wielend, Dominik, Cobet, Munise, Kahraman, Bilge, Irimia, Cristian Vlad, Kanbur, Yasin, Bednorz, Mateusz, Kotwica, Kamil, Fredj, Amel Bel, Romdhane, Samir, Scharber, Markus C., Sariciftci, Niyazi Serdar, and Irimia-Vladu, Mihai

Abstract

N,N′-Substituted quinacridones are a novel class of commercially available quinacridones for organic electronics which are reported here. In this study, we performed in-depth investigations of the material properties of these molecules i.e. their optical and charge transport properties, infrared-active vibrations (FTIR), electrochemical reduction and oxidation properties, thin film forming and processability, and finally performance in organic field effect transistor devices. We show that substitution plays a critical role in the charge transport properties, with methyl substituted amine being the most favorable, followed by di-phenyl and finally di-butyl. Osterreichische Forschungsforderungsgesellschaft 888408 Version of record

Published
2023

8. Pinaceae Fir Resins as Natural Dielectrics for Low Voltage Operating, Hysteresis‐Free Organic Field Effect Transistors (Adv. Sustainable Syst. 10/2022)

Author

Ivić, Jelena, primary, Petritz, Andreas, additional, Irimia, Cristian Vlad, additional, Kahraman, Bilge, additional, Kanbur, Yasin, additional, Bednorz, Mateusz, additional, Yumusak, Cigdem, additional, Aslam, Muhammad Awais, additional, Matković, Aleksandar, additional, Saller, Klara, additional, Schwarzinger, Clemens, additional, Schühly, Wolfgang, additional, Smeds, Annika I., additional, Salinas, Yolanda, additional, Schiek, Manuela, additional, Mayr, Felix, additional, Xu, Chunlin, additional, Teichert, Christian, additional, Osiac, Mariana, additional, Sariciftci, Niyazi Serdar, additional, Stadlober, Barbara, additional, and Irimia‐Vladu, Mihai, additional

Published
2022
Full Text
View/download PDF

10. Advanced Sustainable Systems / Kraft Lignin: From Pulping Waste to Bio-Based Dielectric Polymer for Organic Field-Effect Transistors

Author

Irimia-Vladu, Mihai, D’Orsi, Rosarita, Irimia, Christian Vlad, Lucejko, Jeannette J., Kahraman, Bilge, Kanbur, Yasin, Yumusak, Cigdem, Bednorz, Mateusz, Babudri, Francersco, and Operamolla, Alessandra

Subjects
lignin, natural materials, organic field-effect transistors
Abstract

Lignin is an abundant biopolymer deriving from industrial pulping processes of lignocellulosic biomass. Despite the huge amount of yearly produced lignin waste, it finds scarce application as a fine material and is usually destined to be combusted in thermochemical plants to feed, with low efficiency, other industrial processes. So far, the use of lignin in materials science is limited by the scarce knowledge of its molecular structure and properties, depending also on its isolation method. However, lignin represents an intriguing feedstock of organic material. Here, the structural and chemical-physical characteristics of two kraft lignins, L1 and L2, are analyzed. First, several molecular characterization techniques, such as attenuated total reflectance - Fourier transform infrared spectroscopy, elemental analyses, gel permeation chromatography, evolved gas analysis-mass spectrometry, UV–vis, 31P- and 13C- nuclear magnetic resonance spectroscopies are applied to get insights into their different structures and their degree of molecular degradation. Then, their efficient application as gate dielectric materials is demonstrated for organic field-effect transistors, finding the increased capacity of L1 with respect to L2 in triggering functional and efficient devices with both p-type and n-type organic semiconductor molecules. Version of record

Published
2022

11. Advanced Sustainable Systems / Pinaceae fir resins as natural dielectrics for low voltage operating, hysteresis-free organic field effect transistors

Author

Ivić, Jelena, Petritz, Andreas, Irimia, Christian Vlad, Kahraman, Bilge, Kanbur, Yasin, Bednorz, Mateusz, Yumusak, Cigdem, Aslam, Muhammad Awais, Matković, Aleksandar, Saller, klara, Schwarzinger, Clemens, Schühly, Wolfgang, Smeds, Annika I., Salinas, Yolanda, Schiek, Manuela, Mayr, Felix, Xu, Chunlin, Teichert, Christian, Osiac, Mariana, Sariciftci, Niyazi Serdar, Stadlober, Barbara, and Irimia-Vladu, Mihai

Subjects
high breakdown field, sustainable electronics, plant resins, bias stress, hysteresis-free OFET, natural dielectrics
Abstract

Natural dielectrics are emerging nowadays as a niche selection of materials for applications targeting biocompatibility and biodegradability for electronics and sensors within the overall effort of scientific community to achieve sustainable development and to build environmental consciousness. The two natural resins analyzed in this study, silver fir and Rocky mountain fir demonstrate robust dielectric properties and excellent film forming capabilities, while being trap free dielectrics in high-performance organic field effect transistors (OFETs) operating at voltages as low as 1 V. Immense research possibilities are demonstrated through the avenue of inorganic nanofillers insertions in the natural resins film, that opens the door for fabrication of very low voltage OFETs with high dielectric constant insulating layers. Osterreichische Forschungsforderungsgesellschaft 863530 867266 Fonds zur Förderung der Wissenschaftlichen Forschung (DE-588)2054142-9 I4323-N36 Y1298-N I1788 N20 M2323 N36 19-52-14006 Version of record

Published
2022

12. Chemistry - A European Journal / Reversible Speed Regulation of SelfPropelled Janus Micromotors via Thermoresponsive BottleBrush Polymers

Author

Fiedler, Christine, Ulbricht, Christoph, Truglas, Tia, Wielend, Dominik, Bednorz, Mateusz, Groiss, Heiko, Brüggemann, Oliver, Teasdale, Ian, and Salinas, Yolanda

Subjects
micromotors, microparticles, polyphosphazenes, mesoporous silica, bottle-brush polymers
Abstract

This work reports a reversible braking system for micromotors that can be controlled by small temperature changes (5C). To achieve this, gatedmesoporous organosilica microparticles are internally loaded with metal catalysts (to form the motor) and the exterior (partially) grafted with thermosensitive bottlebrush polyphosphazenes to form Janus particles. When placed in an aqueous solution of H2O2 (the fuel), rapid forward propulsion of the motors ensues due to decomposition of the fuel. Conformational changes of the polymers at defined temperatures regulate the bubble formation rate and thus act as brakes with considerable deceleration/acceleration observed. As the components can be easily varied, this represents a versatile, modular platform for the exogenous velocity control of micromotors. (VLID)5892524 Version of record

Published
2021

16. Charge transfer excitons in low band gap polymer based solar cells and the role of processing additives

Author

Scharber, Markus C., Lungenschmied, Christoph, Egelhaaf, Hans-Joachim, Matt, Gebhard, Bednorz, Mateusz, Fromherz, Thomas, Gao, Jia, Jarzab, Dorota, Loi, Maria A., Scharber, Markus C., Lungenschmied, Christoph, Egelhaaf, Hans-Joachim, Matt, Gebhard, Bednorz, Mateusz, Fromherz, Thomas, Gao, Jia, Jarzab, Dorota, and Loi, Maria A.

Abstract

Organic semiconductor blends yielding efficient charge generation and transport are key components for the development of high performance organic bulk-heterojunction solar cells. In this paper the effect of the processing additive octane-dithiol on the charge transfer emission in poly[2,6-(4,4-bis-(2-ethylhexyl)- 4H-cyclopenta[2,1-b; 3,4-b']-dithiophene)-alt-4,7-(2,1,3-benzothiadiazole)] (PCPDTBT) and [6,6]-phenyl-C-61-butyric acid methyl ester (PCBM) is investigated. Despite the fact that blends processed with and without additive show a ground state charge transfer optical absorption only the blend processed without additive shows a corresponding charge transfer emission. The presented experimental data show that the nano-morphology of the bulk-heterojunction blends plays an important role for the formation of emissive charge transfer excitons, and that it is a loss channel in the studied solar cells.

Published
2011

19. Fullerene Sensitized Silicon for Near‐ to Mid‐Infrared Light Detection

Author

Matt, Gebhard J., primary, Fromherz, Thomas, additional, Bednorz, Mateusz, additional, Zamiri, Saeid, additional, Goncalves, Guillaume, additional, Lungenschmied, Christoph, additional, Meissner, Dieter, additional, Sitter, Helmut, additional, Sariciftci, N. Serdar, additional, Brabec, Christoph J., additional, and Bauer, Günther, additional

Published
2010
Full Text
View/download PDF

21. Optical interferometric structures for application in gas sensors.

Author

Pustelny, Tadeusz, Maciak, Erwin, Opilski, Zbigniew, and Bednorz, Mateusz

Subjects
OPTICAL fiber detectors, OPTICAL interferometers, GAS detectors, HUMIDITY, MOISTURE, AMMONIA
Abstract

In the paper, a gas optoelectronic sensor based on interferometric structure has been presented. Active polymer Nafion® layer deposited at the top of the optical fibre forms the Fabry--Perot interferometer. Interaction with gas changes the physical properties of sensing layer, hence the interference conditions are fulfilled for different wavelengths. Sensor performance for different humidity levels has been measured. The influence of humidity variations on sensing layer is investigated as well. In order to suppress the moisture induced instability of the sensor different inhibiting layers have been deposited and their performance has been investigated. In the paper, a wide investigation of the sensor in ammonia atmosphere has been shown. [ABSTRACT FROM AUTHOR]

Published
2007

22. Amplifying the dielectric constant of shellac by incorporating natural clays for organic field effect transistors (OFETs).

Author

Kim S, Yumuşak Ç, Irimia CV, Bednorz M, Yenel E, Kuş M, Sariçiftçi NS, Shim BS, and Irimia-Vladu M

Abstract

We demonstrate in this work the practical use of uniform mixtures of a bioresin shellac and four natural clays, i.e. montmorillonite, sepiolite, halloysite and vermiculate as dielectrics in organic field effect transistors (OFETs). We present a thorough characterization of their processability and film forming characteristic, surface characterization, elaborate dielectric investigation and the fabrication of field effect transistors with two classic organic semiconductors, i.e. pentacene and fullerene C60. We show that low operating voltage of approximately 4 V is possible for all the OFETs using several combinations of clays and shellac. The capacitance measurements show an improvement of the dielectric constant of shellac by a factor of 2, to values in excess of 7 in the uniform mixtures of sepiolite and montmorillonite with this bioresin., (© TÜBİTAK.)

Published
2023
Full Text
View/download PDF

23. Reversible Speed Regulation of Self-Propelled Janus Micromotors via Thermoresponsive Bottle-Brush Polymers.

Author

Fiedler C, Ulbricht C, Truglas T, Wielend D, Bednorz M, Groiss H, Brüggemann O, Teasdale I, and Salinas Y

Abstract

This work reports a reversible braking system for micromotors that can be controlled by small temperature changes (≈5 °C). To achieve this, gated-mesoporous organosilica microparticles are internally loaded with metal catalysts (to form the motor) and the exterior (partially) grafted with thermosensitive bottle-brush polyphosphazenes to form Janus particles. When placed in an aqueous solution of H 2 O 2 (the fuel), rapid forward propulsion of the motors ensues due to decomposition of the fuel. Conformational changes of the polymers at defined temperatures regulate the bubble formation rate and thus act as brakes with considerable deceleration/acceleration observed. As the components can be easily varied, this represents a versatile, modular platform for the exogenous velocity control of micromotors., (© 2020 The Authors. Chemistry - A European Journal published by Wiley-VCH GmbH.)

Published
2021
Full Text
View/download PDF

Catalog

Books, media, physical & digital resources
See catalog results