Search Results - "Nadáždy, Vojtech"
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Mapping the Density of States Distribution of Organic Semiconductors by Employing Energy Resolved–Electrochemical Impedance Spectroscopy
Published in Advanced functional materials (01-02-2021)“…Although the density of states (DOS) distribution of charge transporting states in an organic semiconductor is vital for device operation, its experimental…”
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2
Highly Efficient Antioxidant F- and Cl-Doped Carbon Quantum Dots for Bioimaging
Published in ACS sustainable chemistry & engineering (02-11-2020)“…The addition of heteroatoms to pristine carbon quantum dots (CQDs) change their structure and optical properties. In this study, fluorine (F)- and chlorine…”
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3
Unifying Charge Generation, Recombination, and Extraction in Low‐Offset Non‐Fullerene Acceptor Organic Solar Cells
Published in Advanced energy materials (01-08-2020)“…Even though significant breakthroughs with over 18% power conversion efficiencies (PCEs) in polymer:non‐fullerene acceptor (NFA) bulk heterojunction organic…”
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4
Optical absorption study of P3HT:PCBM blend photo-oxidation for bulk heterojunction solar cells
Published in Solar energy (01-09-2016)“…•The P3HT:PCBM photo-oxidation is analyzed by difference absorbance spectra.•The decrease of absorbance features corresponding to excitonic states was…”
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5
Electronic structure mapping of branching states in poly[methyl(phenyl)silane] upon exposure to UV radiation
Published in Journal of the Korean Physical Society (01-02-2016)“…The origin of white photoluminescence in polysilanes has long been disputed, and this emission is closely connected with information recording in…”
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6
Unifying Energetic Disorder from Charge Transport and Band Bending in Organic Semiconductors
Published in Advanced functional materials (16-05-2019)“…Characterizing the density of states (DOS) width accurately is critical in understanding the charge‐transport properties of organic semiconducting materials as…”
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7
What is the Binding Energy of a Charge Transfer State in an Organic Solar Cell?
Published in Advanced energy materials (01-06-2019)“…The high efficiencies reported for organic solar cells and an almost negligible thermal activation measured for the photogeneration of charge carriers have…”
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8
Correlation between Molecular Stereostructure, Film Microstructure, and Electronic Structure of Polyfluorene and Fluorene Based Alternating Copolymers F8BT and PFO–DBT
Published in Journal of physical chemistry. C (22-04-2021)“…Identifying key parameters that can help control molecular ordering in the active layer of high-performance organic devices is an important topical issue…”
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9
Electrochemical Spectroscopic Methods for the Fine Band Gap Electronic Structure Mapping in Organic Semiconductors
Published in Journal of physical chemistry. C (16-07-2015)“…Functionality of organic photonic devices is markedly influenced by the electronic band structure of the used materials. An easy and quick determination of the…”
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10
Thickness Effect on Structural Defect-Related Density of States and Crystallinity in P3HT Thin Films on ITO Substrates
Published in Journal of physical chemistry. C (22-03-2018)“…We report on a study of thickness effect on the formation of structural defect-related density of states (DOS) in the band gap of…”
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An Impedance Study of the Density of States Distribution in Blends of PM6:Y6 in Relation to Barrierless Dissociation of CT States
Published in Advanced functional materials (05-06-2023)“…In an endeavor to understand why the dissociation of charge‐transfer (CT) states in a PM6:Y6 solar‐cell is not a thermally activated process, measurements of…”
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12
Thermally‐Induced Degradation in PM6:Y6‐Based Bulk Heterojunction Organic Solar Cells
Published in Advanced functional materials (01-02-2024)“…Thermally induced degradation of organic photovoltaic devices hinders the commercialization of this emerging PV technology. Thus, a precise understanding of…”
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13
Relating Chain Conformation to the Density of States and Charge Transport in Conjugated Polymers: The Role of the β -phase in Poly(9,9-dioctylfluorene)
Published in Physical review. X (24-05-2019)“…Charge transport inπ-conjugated polymers is characterized by a strong degree of disorder in both the energy of conjugated segments and the electronic coupling…”
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14
Energy resolved-electrochemical impedance spectroscopy investigation of the role of Al-doped ZnO nanoparticles in electronic structure modification of polymer nanocomposite LEDs
Published in Materials & design (01-07-2021)“…[Display omitted] •The novel method (energy resolved-electrochemical impedance spectroscopy) for the characterization of the electronic structure of…”
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15
Thiophene-centered azomethines: Structure, photophysical and electronic properties
Published in Journal of molecular structure (15-03-2020)“…We present the synthesis and structure characterization of three novel symmetrical azomethines 3a-c derived from 2,5-diamino-thiophene-3,4-dicarbonitrile…”
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16
The influence of surface roughness on the presence of polymorphs and defect states in P3HT layers
Published in Applied surface science (30-01-2022)“…[Display omitted] •Two polymorphs in P3HT layer occur on rough ITO in comparison to smooth c-Si surface.•Sub-bandgap defect states above the HOMO in P3HT on…”
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17
Influence of localized plasmon resonances on the redox reaction kinetic
Published in Journal of electroanalytical chemistry (Lausanne, Switzerland) (15-09-2017)“…As is well-known, redox reactions taking place on the electrode coated with plasmonic nanostructures influence the plasmon resonances. However, very little is…”
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18
Correlation between electrical parameters and defect states of polythiophene:fullerene based solar cell
Published in Thin solid films (01-09-2016)“…We investigated the degradation of the poly(3-hexylthiophene) (P3HT):(6,6)-phenyl C61-butyric acid methyl ester (PCBM) organic solar cells (OSCs) induced by…”
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Influence of thermal annealing on microstructure, energetic landscape and device performance of P3HT:PCBM-based organic solar cells
Published in JPhys Energy (01-04-2024)“…Thermal annealing alters the morphology of organic donor-acceptor bulk-heterojunction thin films used in organic solar cells. Here, we studied the influence of…”
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20
Absolute energy levels in nanodiamonds of different origins and surface chemistries
Published in Nanoscale advances (24-08-2023)“…Nanodiamonds (NDs) are versatile, broadly available nanomaterials with a set of features highly attractive for applications from biology over energy harvesting…”
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