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Original title in Czech: Fyzikální chemieFCHAbbreviation: DPCPO_FCH_4Acad. year: 2010/2011
Programme: Physical Chemistry
Length of Study:
Accredited from: 16.10.2009Accredited until: 1.11.2013
Guarantor
prof. Ing. Miloslav Pekař, CSc.
Issued topics of Doctoral Study Program
The subject matter is focused on characterization of active layers of organic electronic devices (like OELD - Organic Electroluminescent Devices, FET - Field Effect Transistors, diodes and photovoltaic cells and sensors) by means of physical methods as IR and UV VIS absorption, luminescence, conductivity and environmental influences. The subject covers also basic deposition methods for thin films structures. Preferentially will be investigated derivatives of diketopyrrolo-pyrroles - DPP and their application properties with respect to collaboration with Research Institute for Organic Syntheses, Inc. and Synthesia, Inc., both in Pardubice, with respect to joint projects.
Tutor: Veselý Michal, prof. Ing., CSc.
The study will be focused on electrical discharges generated by high voltage in water solutions of electrolytes and selected organic compounds. Various electrode configurations of the discharge reactor as well as different voltage regimes will be tested. Diagnostics of generated plasma will be carried out by spectral methods and by electrical measurements. Subsequently, both physical and chemical processes initiated by the discharge in the solution will be studied, for example generation of reactive species with high oxidation potential (hydrogen peroxide, hydroxyl, hydrogen and oxygen radicals, ozone) and changes in solution composition and properties (decomposition of compounds dissolved in solution, changes of pH, conductivity, temperature), respectively. The aim of the work will be the comparison of efficiency of these processes for various discharge configurations with respect to their application in pratice.
Tutor: Krčma František, prof. RNDr., Ph.D.
Plasma chemically prepared thin organometallic layers are applied in a wide field of products. They are used as protective coatings or they form an intermediate layer in composites with glass reinforcement, organo-tin layers form upper conducting transparent layer in solar cells. Properties of thin layers are determined mainly by the conditions of their preparation (used precursor, deposition pressure, applied power, etc.). The goal of the thesis is plasma deposition process characterization with respect to the properties of formed layers. A part of thesis will be focused also onto the fragmentation of original organometallic precursor. The determination of organometallic polymer structure and prediction of its properties should be possible based on the experimental data.
Tutor: Omelka Ladislav, prof. Ing., DrSc.
Tutor: Pekař Miloslav, prof. Ing., CSc.
The aim of the work is the experimental and theoretical study of optical and electronic properties of molecular semiconductors suitable for optical and electrical applications. The applicant will deal with characterization of physical and chemical properties of studied materials, such as generation and transport of charge carriers, conductivity and photoconductivity, optical absorption, photo- and electroluminescence. The effort will be made to reach reproducibility in preparation of molecular devices and propose the technology for their utilization in organic electronic. The work is a part of large-scale research project funded by EU.
Tutor: Weiter Martin, prof. Ing., Ph.D.
The study will be focused on the experimental study of nitrogen post-discharge with traces of various other elements. The contemporary experimental device using plasma in flowing regime will be used with different excitation sources (DC, MW, RF). The plasma diagnostics will be based on the optical emission spectroscopy that allows determination of relative populations at selected vibrational levels and consequently the energy transfer reactions should be determined. The experimental data will be confronted with numeric model of active discharge and its post-discharge. The obtained experimental data should be used for the numeric model improvement (this is not goal of this work, model will be only used).
Tutor: Zmeškal Oldřich, prof. Ing., CSc.
Tutor: Salyk Ota, doc. Ing., CSc.
The subject matter is focused on preparation of active layers of organic electronic devices (like OELD - Organic Electroluminescent Devices, FET - Field Effect Transistors, diodes and photovoltaic cells and sensors) by means of vacuum evaporation, spin coating and casting. The subject covers also basic characterization methods for thin films. Preferentially will be investigated derivatives of diketopyrrolo-pyrroles - DPP and their application properties with respect to collaboration with Research Institute for Organic Syntheses and Synthesia, Inc., both in Pardubice, with respect to joint projects.
The work will deal with study of pi-conjugated molecules using optical and electrooptical methods such as absorption and fluorescence spectroscopy, transient absorption, time resolved florescence, photoconductive methods etc. The work will be focused on the utilization of these materials for organic electronics, mainly for construction of solar cells, light emitting diodes, transistors and sensors. The studied processes will cover energy and charge transfer, the existence of triplet states, anihilation of the excited states, processes leading to charge carrier photogeneration, charge mobility, etc. The influence of various dopants will be also addressed.
Diffusion of metal ions in biocolloids (humic substances, chitosan...) in various experimental arrangement and in dependence on conditions (pH, ionic strength), determination of diffusion coefficients, degree of immobilization and other parameters, modeling.
Tutor: Klučáková Martina, prof. Ing., Ph.D.