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Electrodeposition of thin tantalum layers from ionic liquids and measurement of their electrical properties
Svobodová, Ivana ; Boušek, Jaroslav (referee) ; Šimůnková, Helena (advisor)
The thesis is focused on the electrodeposition of tantalum from ionic solution 1-butyl-1- methylpyrrolidinium bis(trifluoromethylsulfonyl) imide, ([BMP]Tf2N) at 200°C and description of related transfer and kinetic phenomena on the interface between the ionic solution and working electrode. Furthermore, the electrodeposition of tantalum layers in different ionic solutions containing tantalum salts and especially in ([BMP]Tf2N) is introduced. In the last part of the thesis, results of cyclic voltammetry, surface analysis SEM and elemental analysis EDX are discussed. MIS (metal-insulator-semiconductor) structure was determined comprising porous anodic alumina as the insulator and semiconductive TaxOy on the top of the insulator. The electric conductivity of the MIS structures was studied by using amper-volt IV and CV characteristics. The results of the cyclic voltametry, impedance spectroscopy and chronoamperometry are discussed.
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Possibilities and Limits of the Didactic Games Use in Chemistry Education at Grammar School: Redox reactions
Prokšová, Monika ; Bílek, Martin (advisor) ; Kuhnová, Marta (referee)
The thesis deals with the possibilities and limits in the activation of students when teaching chemistry as a general educational subject in grammar schools through didactic games in the thematic unit Redox Reactions. The use of didactic games in teaching should help students to acquire and better understand the relatively abstract subject matter, which undoubtedly includes redox reactions. Using didactic games, we also aim to improve students' attitudes towards the subject of chemistry. In the theoretical part the thesis describes the issue en-countered in the activation of students and their motivation to learn through didactic games. Furthermore, various activation methods are also presented here, where the main emphasis is mainly on didactic games. The practical part of the thesis in the introduction contains an analysis of the school education programs of selected gymnasiums, which focuses on the development of the thematic unit Redox reactions. In the next part, it is devoted to a set of 5 created didactic games on the selected topic (Redox reaction) inspiredby televisioncompe- titions or other well-known games that the relevant age group of students knows and uses. The set of didactic games will be created using so-called design research, i.e. in iterations from the prototype to the final...
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Electrodeposition of thin tantalum layers from ionic liquids and measurement of their electrical properties
Svobodová, Ivana ; Boušek, Jaroslav (referee) ; Šimůnková, Helena (advisor)
The thesis is focused on the electrodeposition of tantalum from ionic solution 1-butyl-1- methylpyrrolidinium bis(trifluoromethylsulfonyl) imide, ([BMP]Tf2N) at 200°C and description of related transfer and kinetic phenomena on the interface between the ionic solution and working electrode. Furthermore, the electrodeposition of tantalum layers in different ionic solutions containing tantalum salts and especially in ([BMP]Tf2N) is introduced. In the last part of the thesis, results of cyclic voltammetry, surface analysis SEM and elemental analysis EDX are discussed. MIS (metal-insulator-semiconductor) structure was determined comprising porous anodic alumina as the insulator and semiconductive TaxOy on the top of the insulator. The electric conductivity of the MIS structures was studied by using amper-volt IV and CV characteristics. The results of the cyclic voltametry, impedance spectroscopy and chronoamperometry are discussed.
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