Full-time study

4 years

doc. Ing. Lukáš Fujcik, Ph.D.

Chairman :
doc. Ing. Lukáš Fujcik, Ph.D.
Vice-chairman :
doc. Ing. Jiří Vaněk, Ph.D.
Councillor internal :
prof. Ing. Pavel Koktavý, CSc. Ph.D.
prof. Ing. Jaromír Hubálek, Ph.D.
doc. Ing. Jiří Háze, Ph.D.
doc. Ing. Petr Bača, Ph.D.
Councillor external :
prof. Ing. Josef Lazar, Dr.

The doctor study programme is devoted to the preparation of the high quality scientific and research specialists in various branches of microelectronics, electrotechnology and physics of materials, namely in theory, design and test of integrated circuits and systems, in semiconductor devices and structures, in smart sensors, in optoelectronics in materials and fabrication processes for electrical engineering, in sources of electric energy, nanotechnology and defectoscopy of materials and devices.
The aim is to provide the doctor education in all these particular branches to students educated in university magister study, to make deeper their theoretical knowledge, to give them also requisite special knowledge and practical skills and to teach them methods of scientific work.

The doctors of the program "Microelectronics and technology" are able to solve scientific and complex engineering tasks from the area of microelectronics and electrical technology. Wide fundamentals and deep theoretical basis of the study program bring high adaptability and high qualification of doctors for the most of requirements of their future creative practice in all areas of microelectronics and electrotechnology. Graduates are also equipped with the knowledge and experience from, in particular, physics of semiconductors, quantum electronics and will be able to independently solve problems associated with micro- and nanotechnologies.
The doctors are competent to work as scientists and researchers in many areas of basic research or research and development, as high-specialists in the development, design, construction, and application areas in many institutions, companies, and organisations of the electrical and electronics research, development, and industry as in the areas of electrical services and systems, inclusively in the special institutions of the state administration. In all of these branches they are able to work also as the leading scientific-, research-, development- or technical managers.

Graduate of a doctoral program "Microelectronics and technology" is able to solve complex and time-consuming tasks in areas such as designer of integrated and/or electronic circuits and complex electronic devices. Graduate has a very good knowledge of the field of modern materials for electronics and their use in the electrical industry. Graduate is also able to orient himself in the field of physics of materials and components, nanotechnology and others.
This means that the graduate will be able to become a member of the development team of integrated circuits, complex electronic devices and equipment, their testing and service. In addition, graduate would be as a technologist in the electronic components fabrication process, a researcher in the field of material engineering for the electrical industry, a scientist n basic or applied research and in the introduction, implementation and application of new prospective and economically beneficial procedures and processes in the field of electronics, electrical engineering, non-destructive testing and reliability and material analysis. Likewise, graduate is also able to lead the entire team of workers in presented areas.
A typical employer of a graduate of the Microelectronics and Technology study program is a manufacturing and / or research enterprise that focuses on the areas mentioned above. Another possible employer may be a research organization i.e. the Institute of the Czech Academy of Science. The graduate finds his / her application also on the university campus as an academic at the position of a professional assistant.

Doctoral studies are carried out according to the individual study plan, which will prepare the doctoral student in cooperation with the doctoral student at the beginning of the study. The individual study plan specifies all the duties stipulated in accordance with the BUT Study and Examination Rules, which the doctoral student must fulfill to successfully finish his studies. These responsibilities are time-bound throughout the study period, they are scored and fixed at fixed deadlines. The student enrolls and performs tests of compulsory coursed. Additionally, with regard to the focus of dissertation it is compulsory to enroll and pass at least one of the following courses: Modern microelectronic systems; Electrotechnical materials, material systems and production processes; and/or Interfaces and nanostructures; and other obligatory elective subjects with regard to the focus of his dissertation, and at least two elective courses (English for PhD students, Solutions for Innovative Entries, Scientific Publishing from A to Z).
The student may enroll for the state doctoral exam only after all the tests prescribed by his / her individual study plan have been completed. Before the state doctoral exam, the student prepares a dissertation thesis describing in detail the goals of the thesis, a thorough evaluation of the state of knowledge in the area of the dissertation solved, or the characteristics of the methods it intends to apply in the solution. The defense of the controversy that is opposed is part of the state doctoral exam. In the next part of the exam the student must demonstrate deep theoretical and practical knowledge in the field of microelectronics, electrotechnology, materials physics, nanotechnology, electrical engineering, electronics, circuit theory. The State Doctoral Examination is in oral form and, in addition to the discussion on the dissertation thesis, it also consists of thematic areas related to compulsory and compulsory elective subjects.
To defend the dissertation, the student reports after the state doctoral examination and after fulfilling conditions for termination, such as participation in teaching, scientific and professional activity (creative activity) and at least a monthly study or work placement at a foreign institution or participation in an international creative project.

The doctoral studies of a student follow the Individual Study Plan (ISP), which is defined by the supervisor and the student at the beginning of the study period. The ISP is obligatory for the student, and specifies all duties being consistent with the Study and Examination Rules of BUT, which the student must successfully fulfill by the end of the study period. The duties are distributed throughout the whole study period, scored by credits/points and checked in defined dates. The current point evaluation of all activities of the student is summarized in the “Total point rating of doctoral student” document and is part of the ISP. At the beginning of the next study year the supervisor highlights eventual changes in ISP. By October, 15 of each study year the student submits the printed and signed ISP to Science Department of the faculty to check and archive.
Within the first four semesters the student passes the exams of compulsory, optional-specialized and/or optional-general courses to fulfill the score limit in Study area, and concurrently the student significantly deals with the study and analysis of the knowledge specific for the field defined by the dissertation thesis theme and also continuously deals with publishing these observations and own results. In the follow-up semesters the student focuses already more to the research and development that is linked to the dissertation thesis topic and to publishing the reached results and compilation of the dissertation thesis.
By the end of the second year of studies the student passes the Doctor State Exam, where the student proves the wide overview and deep knowledge in the field linked to the dissertation thesis topic. The student must apply for this exam by April, 30 in the second year of studies. Before the Doctor State Exam the student must successfully pass the exam from English language course.
In the third and fourth year of studies the student deals with the required research activities, publishes the reached results and compiles the dissertation thesis. As part of the study duties is also completing a study period at an abroad institution or participation on an international research project with results being published or presented in abroad or another form of direct participation of the student on an international cooperation activity, which must be proved by the date of submitting the dissertation thesis.
By the end of the winter term in the fourth year of study the students submit the elaborated dissertation thesis to the supervisor, who scores this elaborate. The final dissertation thesis is expected to be submitted by the student by the end of the fourth year of the studies.
In full-time study form, during the study period the student is obliged to pass a pedagogical practice, i.e. participate in the education process. The participation of the student in the pedagogical activities is part of his/her research preparations. By the pedagogical practice the student gains experience in passing the knowledge and improves the presentation skills. The pedagogical practice load (exercises, laboratories, project supervision etc.) of the student is specified by the head of the department based on the agreement with the student’s supervisor. The duty of pedagogical practice does not apply to students-payers and combined study program students. The involvement of the student in the education process within the pedagogical practice is confirmed by the supervisor in the Information System of the university.

1. A modern circuit solutions for special applications

   Investigate the possibilities of using new types of circuits for special applications, especially for space industry equipment. Focus on suppressing cosmic rays. Design a CubeSat that will be able to test your method in a real environment. Analyze the results and modify the method to be applicable to other launches.

   Tutor: Háze Jiří, doc. Ing., Ph.D.

2. Advanced circuit- and architecture-level solutions for true low-voltage analog-to-digital converters for energy harvesting and biomedical applications

   The aim of this work is to provide a research of advanced and optimized circuit- and architecture-level solutions for true low-voltage high power efficient analog-to-digital converters for energy harvesting and biomedical applications. The voltage supply target is in range of 0.5-0.3V with power consumption in range of nanowatts. The function of the proposed structures will be described and simulated by using 0.18 µm CMOS technology from TSMC. The verified design of this low-voltage convertor should be the main result.

   Tutor: Khateb Fabian, prof. Ing. et Ing., Ph.D. et Ph.D.

3. Aperiodic diffractive fibre gratings

   The focus of the thesis is to optimise the design means of preparation of the aperiodic optical diffractive structures in the fibre waveguides aimed to the construction of the sensors and spectral filters. The thesis will utilise and show the design and verification of the necessary modifications of the present mask based fibre grating exposition systems to allow for the exposition of the diffractive structures by use of the interferometric method. Forming the LP aperiodic structures will be experimentally shown and acquired features compared to the Bragg grating features. The design model for forming the desired functionality grating is expected to be composed. The means for the control of the grating properties and for the fast evaluation of the spectral changes of the aperiodic diffractive structures will be designed and experimentally verified. Reference: Kayshyap, R.: Fiber Bragg Gratings. AP, San Diego, 1999.ISBN 0-12-400560-8 Othonos, A, Kyriacos, K.: Fiber Bragg Gratings, fundamentaks and applications in telecommunications and sensing. AH, Norwood, 1999. ISBN0-89006-344-3

   Tutor: Urban František, doc. Ing., CSc.

4. Deep neural networks and their usage for defect recognitions on a surface of electronic structure

   The work deals with the use of neural networks with deep learning to diagnose the surface of electronic micro and nano structures that are scanned using electron microscopes with varying degrees of resolution. Search for defects occurring on the surface is time-consuming.

   Tutor: Sedlák Petr, doc. Ing., Ph.D.

5. Degradation of solar cells and modules

   Degradation of solar cell and modules.

   Tutor: Vaněk Jiří, doc. Ing., Ph.D.

6. Design of new microsystems for Smart Home

   In the course of the research the student will become familiar with t the current issue of smart home. The research will lead to the design and development of methods that can be used to design new microelectronics structures for smart home. The basic method will be the measurement of the chromaticity of the incident radiation and the regulation of lighting.

   Tutor: Šteffan Pavel, doc. Ing., Ph.D.

7. Development of piezoelectric lead-free materials for energy harvesting

   Nowadays, energy harvesting is very popular. Piezoelectric ceramic generators play a vital role in this field. Commercial piezoelectric generators (energy harvesters) are based on lead piezoceramics. A trend is to replace lead-based materials by lead-free materials. BCZT and BT are very perspective lead-free piezoelectric ceramics materials. The work is therefore focused on the development and study of these unleaded materials and their controlled doping for the purpose of efficient electric energy harvesting. Internship at the University of Oulu is planned.

   Tutor: Holcman Vladimír, doc. Ing., Ph.D.

8. Diagnostic method of solar cells and modules

   By usage of stochastic method (noise diagnostic and accustic emision) detect defects of solar cells and modules.

   Tutor: Vaněk Jiří, doc. Ing., Ph.D.

9. Dielectric spectroscopy of materials with high permittivity

   Materials exhibiting high permittivity (dielectric constant, k) are needed for new applications, particularly in integrated circuits (ICs) using the 32 nm technology and in capacitors. In capacitors, high-k dielectrics are used in order to attain higher energy densities in capacitors and thus to reduce the size of capacitors themselves.

   Tutor: Holcman Vladimír, doc. Ing., Ph.D.

10. Dielectrics and their impedance response to changes in temperature

    In the course of this research, the student will become familiar with the contemporary issues of insulating materials (dielectrics) and their electric behavior below the freezing point, and at a room and high temperatures. Research will lead to the design and development of methods that can be used to continuously monitor insulation properties and predict the practical life span of insulators and their resistance to extreme temperatures. The principal experimental method will be the measurement of complex impedance at variable temperatures as well as the measurement of DC resistance and the loss factor at 50 Hz. The methodology will be supplemented by monitoring of aging of the materials due to exposure to artificial sunlight.

    Tutor: Vanýsek Petr, prof. RNDr., CSc.

11. Diffractive fibre gratings with moare structures

    The focus of the thesis is to optimise the design means and exposition process of preparation of the specific type of the fibre Bragg gratings, diffractive structures in the fibre waveguides utilising the moare effect in multiple exposition of the UVinterference field, aimed to the construction of the sensors and spectral filters. The thesis will utilise and show the design and verification of the necessary modifications of the present mask based fibre grating exposition systems to allow for the exposition of the diffractive structures by use of the interferometric method. Forming the moare structures will be experimentally shown and acquired features compared to the chirped Bragg grating features. The design model for forming the desired functionality grating is expected to be composed. Reference: Kayshyap, R.: Fiber Bragg Gratings. AP, San Diego, 1999.ISBN 0-12-400560-8 Othonos, A, Kyriacos, K.: Fiber Bragg Gratings, fundamentaks and applications in telecommunications and sensing. AH, Norwood, 1999. ISBN0-89006-344-3

    Tutor: Urban František, doc. Ing., CSc.

12. Electrical characterization of nanostructures by SPM

    Low-dimensional electronic structures demands sensitive characterization techniques. Wrong choice of measurements method can affect the nanostructures, modify its properties. Furthermore, ambient conditions influence the measurement and making additional complications in interpretation of the results. The objective of this study is non-destructive investigation of local electrical properties of nanostructures, including correlation between mechanical and electrical contrast of SPM-data. The result of the work should be the development of methods and calibration samples for the quantitative assessment of electrical parameters.

    Tutor: Sobola Dinara, doc. Mgr., Ph.D.

13. Electrochemical etching for sharp tip preparation

    Sharp tip could be prepared by electrochemical etching. These tips could be used as cathodes or tips for STM. Preparation of sharp tips is not easy task especially considering process reproducibility. The work will be focused on tip creation process research and optimization, tip characterization, cause analysis and maximization of process reproducibility.

    Tutor: Škarvada Pavel, Ing., Ph.D.

14. Electrochemical model for lithium-sulfur batteries

    The aim of the thesis will be a deeper study of electrochemical processes and their mathematical models that could be implemented and used for numerical modeling of lithium-sulfur accumulators. An integral part will be a deeper understanding of the ANSYS system, at the core of which it would be appropriate to implement the models for further multiphysical analyzes. The output will be a validated and verified numerical model.

    Tutor: Vyroubal Petr, doc. Ing., Ph.D.

15. Energy harvesting devices based on lead-free piezoelectric materials

    The work deals with design, fabrication and optimization of energy harvesting devices based on piezoelectric materials. The main aim will be focused on lead-free piezoelectric materials such as BCZT, KNN and BNKT. Next part of this work is focused on design of electronics for proposed energy harvester devices with effort to obtain maximal energy transport from energy harvester into an energy storage. Last part is based on proposal and developing of suited methods for testing and evaluation of parameters for piezoelectric energy harvesters.

    Tutor: Sedlák Petr, doc. Ing., Ph.D.

16. Field Emission Properties of Inorganic Semiconductive ZnO Thin Films

    The objective of this study is to describe the effects of semiconductive coating on the surface of metal nanostructures that are located inside strong electric field. Atomic layer deposition (ALD) of a zinc oxide semiconductor oxide will be used to obtain experimental layer on a conductive substrate. The ALD is a vapor phase technique that may be used to deposit thin films onto a substrate even on a very sharp tips. So far, there is no well-studied field-emission structure with a ZnO coating that is able to provide stable current of electrons using cold field emission. Generally, field emission structures are not only important not for free electron sources but they are used for sensors and for other nanoelectronics applications. Determination and evaluation of proper parameters of the ZnO layer is supposed to be done by analysis of the total emission current and by description of the charge current transport within the junction.

    Tutor: Sobola Dinara, doc. Mgr., Ph.D.

17. Graphene based sensors of physical quantities

    Graphene, as a monoatomic layer of hexagonally arranged carbon atoms, currently requires a strong research effort. Due to its unique structure and electrical properties, this material is destined for use in modern electronics, for example as an extremely sensitive gas or liquid sensors. Unique sensitivity and chemical selectivity can be enhanced by measuring noise response instead of measuring mean voltages and currents. Noise processes are generally monitored for many electronic components and are associated with their local/volume electrical stress, change of doping, act of charge capture/release etc. Dominantly, noise 1 / f is observed, which, in conjunction with the 2D structure of graphene, provides a unique opportunity to extend knowledge in the field of sensorics and modern graphene-based electronics.

    Tutor: Macků Robert, Ing., Ph.D.

18. Heterogenous structures in optical fibres

    The goal of the thesis is to study and analyze the optical fibre resonant and mode conversion macrostructures with longitudinal step and gradient changes of the propagation constant. The aim is also finding the applicable methods of fabrication of the structures and optimizing the structures for their use in sensing. The works will utilize the abilities of the station for the optical fibres hetero splicing and the station for laser ultra micromashining of optical fibres. The expected results will be the optimized samples of the fibre heterostuctures for sensing and the optimised methods of their fabrication Reference: Kayshyap, R.: Fiber Bragg Gratings. AP, San Diego, 1999.ISBN 0-12-400560-8 Othonos, A, Kyriacos, K.: Fiber Bragg Gratings, fundamentaks and applications in telecommunications and sensing. AH, Norwood, 1999. ISBN0-89006-344-3

    Tutor: Urban František, doc. Ing., CSc.

19. Increase of dielectric constant for ceramic materials for use in capacitors

    High permittivity materials are needed for new applications, eg. in the next generation integrated circuits or in capacitors. In the manufacture of capacitors, materials with high permittivity are desirable to achieve a higher density of energy in the capacitor and hence to diminish the dimensions. Nowadays, pure BaTiO3 material is used for commercial ceramic capacitors. By doping the permittivity of this material can be increased up to 10 times. The aim is to find options for BaTiO3 to increase the permittivity in the form of doping or material modification. Internship at the University of Oulu is planned.

    Tutor: Holcman Vladimír, doc. Ing., Ph.D.

20. Influence of electrode morphology on electric charge transport at electrode / electrolyte interface

    The aim of this work is to study the charge transport at electrode and electrolyte interfaces, with an emphasis on the analysis of the influence of morphology on sensory properties (selectivity, sensitivity, etc.). Practical results lay in development of physical and electrical models on the basis of experimental study of amperometric gas sensors.

    Tutor: Sedlák Petr, doc. Ing., Ph.D.

21. Low temperature plasma generator and analysis of influence on organic material

    The dissertation will be focused on design and development of prototype low temperature plasma generator with possibility of variable frequency modulation and study of influence on organic material. It should be exposed to an electromagnetic wave near the plasma and the biochemical response should be studied. Samples after drying will be monitored by SEM and fluorescence microscopy and by controlled change of modulation frequency, power or external magnetic field, selectivity to e.g. cells and bacteria will be ensured.

    Tutor: Macků Robert, Ing., Ph.D.

22. Mechanical filter bank for low power cochlear implants

    A cochlear implant represents an electronic device which can at least partially return hearing ability to the people with hearing disorder or loss. Current cochlear implants compose of outer part including microphone, sound processor and transmitting coil, and inner part including receiver coil and field of electrodes connected to hearing nerves. Recently several attempts of fully implatable cochlear implants integration have been done, but of not satisfactory enough parameters. The aim of this work is to design and by using of MEMS technology fabricate mechanical filter bank, for instance employing the piezoelectric principles, which can be utilized for acoustic signals decomposition in low-power fully implantable cochlear implants in the future.

    Tutor: Prášek Jan, Ing., Ph.D.

23. Microelectronic fractional-order functional blocks

    Thesis deals with the design of the microelectronic blocks of fractional-order filters approximation using a filter of higher order integer. Active filters of third-order are use to create filter of (1 + alpha)-order, where alpha is between zero to one. One of the filters should practically implemented and measured.

    Tutor: Musil Vladislav, prof. Ing., CSc.

24. Microscopic methods for local processing and characterization of solar cells

    Generally, local defects in the structure of solar cells indicate critical issue, which significantly reduce the efficiency of optical energy conversion, reliability and durability. At present, a number of scientific methods are available for studying the surface, finding the physical origin of the defects and removing them. For example, electron microscopy (SEM), ion surface treatment (FIB, RIE), elemental analysis (EDS) and local material response mapping (EBIC) can be used. These methods represent a unique possibility of defects and layers properties detecting. The aim of the scientific work is a detailed analysis of modern materials for photovoltaics (CIGS, GaAs, perovskite) defect cataloging and possible modification of production technology.

    Tutor: Macků Robert, Ing., Ph.D.

25. Modeling and measurement of the response of electrical and electrochemical material properties on the actual physical shape and dimensions of the studied samples

    In this work the student will become familiar with the contemporary issues of electrical and electrochemical measurements (especially impedance, voltage and current distribution on the electrodes and the flow of matter in electrochemical cells). The student will concurrently learn the principles of computer modeling through the method "Finite Elements Modeling" while using commercial software. Computational studies will lead to design of the best practices for actual measurements, proposals for possible new practical geometries and the feedbacks to colleagues who are developing samples of functional designs.

    Tutor: Vanýsek Petr, prof. RNDr., CSc.

26. Modification of electrical properties of cement composite materials carried out on inorganic components

    The aim of this work is a system of evaluation of electrical properties of modified cement composite materials, which can be applied in the concept of smart buildings and enable their incorporation into the Smart City area.

    Tutor: Šteffan Pavel, doc. Ing., Ph.D.

27. Monte Carlo simulations of interactions of signal and primary electrons with gas in ESEM.

    In the course of the research the student will study the theory of electron-gas interactions for a making and optimisation a basic code ot the new Monte Carlo software. New database of diferencial cross sections for elastic and inelastic interactions in conditions of selected gasses will be done. All other physical consequences of these phenomenon will be studied and relevant physical models will be integrated into the basic code of the software. The function and accurancy of simulations of electron-gas interactions will be compared with experimantal data. New detector of signal electrons for ESEM will be designed and tested acording to simulation results.

    Tutor: Neděla Vilém, doc. Ing. et Ing., Ph.D., DSc.

28. New electrode materials for lithium-sulfur batteries

    The topic will be the preparation and study of new composite materials based on inversely vulcanized sulfur and their use as an electrode material for electrochemical power sources.

    Tutor: Čech Ondřej, Ing., Ph.D.

29. New electrode materials for post-lithium ion batteries

    The topic will be the preparation and study of new composite materials based on carbon-metal structures and their use as an electrode material for electrochemical power sources.

    Tutor: Kazda Tomáš, doc. Ing., Ph.D.

30. New In-situ observation methods of the processes in lithium-ion batteries using electron microscopy

    New observation methods will be developed within this work, thanks to which it will be possible to study structures of the electrodes of Li-ion battery during cycling by SEM. The work will be coordinated in cooperation with Thermo Fisher Scientific.

    Tutor: Kazda Tomáš, doc. Ing., Ph.D.

31. Nonconventional semiconductor structures for now-voltage integrated circuits

    Nonconventional semiconductor structures for low-voltage integrated circuits. Theoretical design, simulations, and experimental evaluations of designed integrated circuits with low-voltage and low-power. The verified design of a current conveyor should be the main result.

    Tutor: Musil Vladislav, prof. Ing., CSc.

32. Novel decoding method for asynchronous delta sigma modulators

    Conventional decoding schemes for asynchronous delta sigma modulators (ADSMs) limit input dynamic range of modulators, and always requires a high speed sampling clock. Improve a decoding scheme for asynchronous delta sigma modulators. Implement the ADSMs including novel decoding scheme by designing critical sub-modules on transistor level and verify the overall top-level ADSMs performance as a whole with Cadence simulation environment.

    Tutor: Kledrowetz Vilém, doc. Ing., Ph.D.

33. Radiation characteristics of thermal plasmas

    Radiation energy transfer influences significantly physical processes occuring in the plasma, it plays important role in many devices in plasma processing devices. Electric arc plasmas are utilized in number of industrial applications, e.g. in plasma metallurgy, waste treatment, plasma cutting, welding or spraying. The goal of the work is to solve the equation of radiation transfer by means of various approximate methods , to compare the obtained results of radiation energy and radiation flux for selected kinds of plasmas, to discuss availability of different approximate methods.

    Tutor: Bartlová Milada, doc. RNDr., Ph.D.

34. Sodium-ion Batteries

    The basis of this work will be research and development in the field of sodium-ion batteries. The sodium-ion batteries belong to the group of so-called post-lithium systems, the successors of the existing lithium-ion technology. A sodium-based battery is an environmentally friendly, cost-effective (virtually unlimited source of sodium element) alternative to lithium-ion batteries. There is no need for a new technology process for the production of these batteries, since they are based on the same technology manufacturing process as the lithium-ion batteries. A major issue of sodium-ion battery is the development of electrode materials (electrodes), which is the key that opens the mass production of these accumulators. The field of application of soda-ion batteries is primarily renewable energy sources. The need for batteries which will store the energy produced from renewable energy sources lies in the essence of renewable sources themselves. The sun and wind are non-dispatchable, it is not possible to influence when they produce electricity. In order to effective utilize the energy produced from these sources, it is essential to store this energy. This requires batteries that store energy and allow it to be used on demand (efficiently). If we are talking about the sustainable development of human society, we must learn how to effectively use energy from renewable sources and this is not possible without the accumulation of the electric energy.

    Tutor: Libich Jiří, Ing., Ph.D.

35. Solar cell local characterization

    Solar cells are large area structures used for conversion of solar energy to electricity. There are several types of defects that affect solar cell parameters and lifetime. These defects are localized and for their detection, localization and elimination different specific procedures are used. The work will be focused on defect detection, defect localization and local structure modification of solar cells.

    Tutor: Škarvada Pavel, Ing., Ph.D.

36. Supercapacitors with Higher Energy Density

    The aim of the dissertation thesis is research and development in the field of energy storage with help of supercapacitors. Supercapacitors belongs among electrochemical cells and by their nature and operating principle, the supercapacitors represents a missing link between conventional batteries and conventional capacitors. Supercapacitors combine the advantageous features of both systems, i.e. charging/discharging speed, high cycles durability and higher energy density. The energy density is the key problem of supercapacitors. Hybrid supercapacitors are a promising solution of this problem. These supercapacitors could be used primarily in electric vehicles and other vehicles with electric propulsion due to their charging speed, lifetime and sufficient energy density. The dissertation thesis is focused on research of electrode materials for the hybrid supercapacitors.

    Tutor: Libich Jiří, Ing., Ph.D.

37. Suppression of parasitic EM filed for electron microscopy

    Accelerated electrons are used for electron microscopy imaging. Parasitic external EM fields can limit resolution especially for higher magnifications. External driven coil can be used for suppression of parasitic EM fields in defined area. The work will be focused on measurement of EM fields, reverse phase EM field generation and research in this field.

    Tutor: Škarvada Pavel, Ing., Ph.D.

38. Synthesis and properties of multiphase Bi-Fe-O thin films

    The objective of this study is influence of preparation parameters on structural properties of Bi-Fe-O system. Phase variation depends on method and chosen parameters of thin films formation. Pulse laser deposition of Bi-Fe-O films from BiFeO3 target (with higher chemical and phase purity) is supposed to be used for preparation of the films. This technology allows obtaining high-quality heterostructures and excluding the presence of impurities. Currently, there is no complete information about the nature of the phase formation of Bi-Fe-O compounds. Materials on the basis of Bi-Fe-O are important for design of sensors, memory devices other applications of nanotechnology. Control of phase purity of Bi-Fe-O thin films is supposed to be studied in correlation with magnetic and electrical properties.

    Tutor: Sobola Dinara, doc. Mgr., Ph.D.

39. 1D and 2D materials for gas sensing

    The aim of this work is focused on research in modern one-dimensional (1D) and two-dimensional (2D) materials area. These materials, such as WO3 nanowires or silicene, should be suitable for detection of low concentrations due to their active surface to volume ratio. Nowadays, several theoretical and experimental researches which predicts these unique properties were done. Main goal of this work is to develop structures suitable for characterization of these 1D and 2D materials. Development and fabrication of 2D transistors and chemoresistors for subsequent characterization of 1D and 2D materials for gas sensing will be provided. It will be important to find invention in combination of these materials to reach selective gas sensing. Main output should be structure which will be able to recognize tested gas.

    Tutor: Hrdý Radim, Ing., Ph.D.

40. 2D materials for integrated circuits as graphene supersede

    This work is aimed on research in modern two-dimensional (2D) material area. These materials, as is silicene, are suitable for fabrication of field-effect-transistors (FET) and other structures in comparison with graphene. It is due to their unique electrical properties. Nowadays, several theoretical researches which predicts these unique properties were done. Main goal of this work is development of structures which will be suitable for characterization of these 2D materials. Development and fabrication of FET structures for subsequent characterization of 2D materials in defined ambient conditions will be provided. It will be important to find invention in micro-electro-mechanical systems area based on 2D materials. Main output should be structure based on 2D material combining MEMS and FET technologies.

    Tutor: Hrdý Radim, Ing., Ph.D.

1. round (applications submitted from 01.04.2020 to 15.05.2020)

1. Design and testing of digital circuits in space applications.

   Design and testing of digital circuits in space applications. Finding of the proper approach and method for digital circuits design in space applications with respect to the extreme enviroment to achieve high robustness and reliability.

   Tutor: Fujcik Lukáš, doc. Ing., Ph.D.

2. Ex-situ and In-situ spectroscopic methods for characterization of electrode materials of electrochemical power sources

   he thesis will study the properties of electrode materials for electrochemical current sources, especially lithium-ion and post-lithium systems. In-situ / ex-situ X-ray diffraction spectroscopy and other X-ray and spectroscopic methods will be used.

   Tutor: Čech Ondřej, Ing., Ph.D.

3. In-situ studies of surface events on accumulator electrodes by atomic force microscopy

   AFM (atomic force microscopy) is one of the suitable techniques for observing electrode surfaces in their natural environment. The aim of this project is to develop a methodology that will make it possible to use this microscope technique to observe the processes that are taking place in different types of battery systems in different operating modes. The outcome of the project will to verify the existing knowledge of the processes taking place in the batteries and to obtain new knowledge about these processes.

   Tutor: Bača Petr, doc. Ing., Ph.D.

4. Methods for precise 3D distance measurement

   Size measurement of the object is becoming important together with progress of 3D printing technology, augmented reality, navigation systems and various portables devices. There exist several approaches for distance measurement suitable for particular applications with different resolution, measurement range and speed of measurement. The work will be focused on principles and possibilities of particular method utilization, research and experimental verification.

   Tutor: Škarvada Pavel, Ing., Ph.D.

5. New gel polymer electrolytes for Li-ion and post-lithium accumulators

   This work deals with new gel polymer electrolytes, which should replace the liquid and polymer electrolytes used in Li-ion and post-lithium-ion accumulators. Gel electrolytes based on copolymers of methyl methacrylate with ethyl methacrylate, butyl methacrylate and lauryl methacrylate will be prepared.

   Tutor: Sedlaříková Marie, doc. Ing., CSc.

6. Perovskite solar cells

   The work is aimed at studying the properties of perovskite solar cells and monitoring the impact of changes in various functional structures in the cell on the behavior of the entire system. The student will use advanced static and dynamic photoelectric methods in the studies.

   Tutor: Novák Vítězslav, doc. Ing., Ph.D.

7. Research of supersonic flow on the boundary of continuum mechanics.

   The basis of the dissertation thesis is the research in the field of supersonic flow at low pressures in the area of continuum mechanics with respect to the functionality of the Environmental Scanning Electron Microscope when pumping vacuum chambers.

   Tutor: Maxa Jiří, doc. Ing., Ph.D.

8. Study of battery characteristics depending on operating conditions

   For selected accumulators of pouch construction will be studied the influence of operating conditions on electrochemical properties such as capacity, capacity at high load, internal resistance and cyclability. The influence of positive and negative temperatures on these parameters will be studied by electrochemical methods such as galvanostatic cycling or electrochemical impedance spectroscopy. Simultaneously, temperature and dimensional changes of the cell during these analyzes will be monitored. The influence of different pressure applied on the battery walls on electrochemical properties during its cycling will be studied. At the end the battery will be disassembled and post-mortem analysis will be performed. The work will be coordinated in cooperation with Škoda Auto

   Tutor: Kazda Tomáš, doc. Ing., Ph.D.

9. Technology for recycling of lithium-ion accumulators

   The topic is focused on the issue of lithium-ion accumulators and their recycling. The aim will be to propose new methods and modify the methods currently used for the recycling of the lead-acid accumulators for the recycling of the lithium-ion accumulators in order to achieve the highest efficiency of recycling of the electrode materials. For the recycling process will be investigated new types of environmentally friendly procedures and solvents that can replaced currently used very aggressive and non-organic solvents. Total profit of recycled materials should exceed 70% of the original mass of the accumulator. The results obtained in this research will help to increase the long-term sustainability of the technology of lithium-ion accumulators needed to develop electromobility.

   Tutor: Kazda Tomáš, doc. Ing., Ph.D.

10. Utilization of centrifugal fiber spinning for preparation of materials for electrochemical power sources

    The topic of the thesis will be the preparation of fiber materials by centrifugal spinning and their use in electrochemical power sources.

    Tutor: Čech Ondřej, Ing., Ph.D.