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The Analysis and Optimization of Selective Technological Processes for Contacts on Crystalline Silicon Solar Cells
Hladík, Jiří ; Sládek, Petr (referee) ; Myslík, Vladimír (referee) ; Szendiuch, Ivan (advisor)
The submitted work deals with the methods for manufacturing and analysis of contacts on crystalline silicon solar cells. It is focused on selective processes for the production of solar cells metal contacts. The masking feature of silicon nitride is used for selective silicon etching, selective phosphorus diffusion and selective electro-less nickel deposition. Properties of metal contacts precursors are investigated using optical microscopy and their electrical properties using methods based on a four-point probe method. Results are used for the manufacturing of silicon, solar cell with an innovative type of the structure of the front side metallization: chemical nickel, conductive adhesive and copper wire. This approach allows to reduce shading of the front area of PV cells with the ability to avoid usage of busbars. The another advantage of this approach is in replacement of costly silver in at least 2/3 cross section of the front side metallization. Selective ablation of silicon nitride layer was conducted by means of IR laser beam.
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Transition metal oxides for chemical sensors
Volfová, Lenka ; Tyrpekl, Václav (advisor) ; Zelinger, Zdeněk (referee) ; Myslík, Vladimír (referee)
Outdoor air pollution is one of the main environmental problems today. Its monitoring is, among other things, given by the European Union directive (2008/50/EC) on air quality and places high demands on the quantity and reliability of sensors deployed in our immediate surroundings. In order to continuously monitor large number of habitats, it is necessary to develop simple and inexpensive types of sensors. Figure 1 shows an example of such a sensor. The topic of the dissertation is the preparation by physical methods and the study of the surfaces of thin oxide layers as an active medium for the above-mentioned applications. The thesis investigates the possibility of materials preparation by pulsed laser deposition, discharge in a hollow cathode and magnetron sputtering thin film materials for chemiresistor sensors based on copper and tungsten oxides, luminescent Eu doped ZnO layers and resonant so-called QCM, where a quartz resonator was covered with a layer of black aluminium showing a large specific surface in order to increase the sensitivity of these types of sensors. Since the state and properties of the surface are crucial for the function of these types of sensors, an integral and important part of the work is the characterization of the structural properties of the prepared layers,...
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Entertainment programmes in Czech television with an emphasis on public television.
Hirsch, Cyril ; MYSLÍK, Václav (advisor) ; SVOBODA, Otakar (referee)
Entertainment has been one of the major genres throughout the history of television, which has served an entertainment function from its very beginning. With the arrival of the dual broadcasting system, the genre became controversial in the context of public service to citizens.
The thesis discusses the evolution of entertainment programmes in Czech television, placing an emphasis on Česká televize (Czech Television), the public TV. The thesis provides a comprehensive picture of the genre, putting it in the context of the historical development of Česká televize and, later, the arrival of commercial broadcasters in the Czech Republic. It discusses the development of TV entertainment formats in terms of programming, as well as the possibilities and types of programme production. Yet the most important part is the comparison of private broadcasters' and the public institution's approach to the entertainment genre, which, by definition, tends to be rather commercial in its concept.
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The Analysis and Optimization of Selective Technological Processes for Contacts on Crystalline Silicon Solar Cells
Hladík, Jiří ; Sládek, Petr (referee) ; Myslík, Vladimír (referee) ; Szendiuch, Ivan (advisor)
The submitted work deals with the methods for manufacturing and analysis of contacts on crystalline silicon solar cells. It is focused on selective processes for the production of solar cells metal contacts. The masking feature of silicon nitride is used for selective silicon etching, selective phosphorus diffusion and selective electro-less nickel deposition. Properties of metal contacts precursors are investigated using optical microscopy and their electrical properties using methods based on a four-point probe method. Results are used for the manufacturing of silicon, solar cell with an innovative type of the structure of the front side metallization: chemical nickel, conductive adhesive and copper wire. This approach allows to reduce shading of the front area of PV cells with the ability to avoid usage of busbars. The another advantage of this approach is in replacement of costly silver in at least 2/3 cross section of the front side metallization. Selective ablation of silicon nitride layer was conducted by means of IR laser beam.
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The Profile of HBO with a Focus on the Original Programming in Czech Republic and Possibilities of Cooperation
Pešula, Tomáš ; OUKROPEC, Petr (advisor) ; MYSLÍK, Václav (referee)
Profile of HBO (Home Box Office Inc) - premium cable and satelite network marked as quality television. Reflecting on HBO within a broader context of the TV medium transformation as a result of postmodern thinking, technological innovations, viewer´s education and the evolution of the audience in the third television era. The emergence, development and expansion of HBO in the United States, Europe and especially in Czech Republic. Analyzing HBO´s original programming and its deliberate differentiation from contemporary original content of broadcasting networks. Examining the long term production purpose of the company, its development, targeted group of viewers, contribution to the culture and cinematography and exploring the possibilities of cooperation. Focusing on the HBO operating principles, its political and economical proceeding, strategy, communication and promotional devices, creative approach and technological innovations towards the future.
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Program Dramaturgy of the Public Service Media
Badač, Peter ; MATHÉ, Ivo (advisor) ; MYSLÍK, Václav (referee)
In this thesis I deal with the public media programming.
On the example of Czech television, Irish RTÉ and Finnish YLE am I trying to show the current tendences in the programming of new project and format as well as to show the relationship between the public broadcasters and new medias. Within the programming this thesis deals with the various types of genres that are broadcasted by public media, on the field of development of new programs it describes the process of development of new projects in the institutions mentioned before. It also analyses the current programming and scheduling of the public media.
This thesis also covers the current trends in European public broadcasting companies and shows the trends on the field of develepment of new programms and new media.
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The effects of the process of digitalization on Czech TV
Vácha, Pavel ; Mathé, Ivo (advisor) ; Myslík, Václav (referee)
This work describes the effects of the process of digitalization of the terrestrial
television signal broadcasting on the Ceská televize (Czech Television) station as
a public service broadcaster. The introduction provides a basic explanation of the
term digitalization and the history of digitalization of television production as the
first stage of digitalization of the terrestrial television signal broadcasting.
The first chapter presents a brief history of television and the television market
in Czechoslovakia and the Czech Republic which also indicates the situation in
the market before the process of digitalization of the television signal
broadcasting began. The next section presents an overview of the legal
framework of the process and the technological solution.
In chapters dedicated to two new programme groups whose origination is made
possible by a change in the broadcasting of the signal, their creation is described
in the context and the first years of broadcasting are evaluated. The thesis also
deals with the issues related to the emergence of new private television stations
and their influence on the Czech Television.
In conclusion, the audience is analyzed as one of the indicators of success and
trends established by the process of digitization in the market and the future
development in the television market from the viewpoint of the Czech Television
station is addressed.
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