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Fabrication of conducting patterns by material electroless plating of printed precursor
Kováčová, Silvia ; Gemeiner,, Pavol (referee) ; Dzik, Petr (advisor)
The subject of this diploma thesis is the preparation of conductive structures by electroless plating of an extruded precursor. The experimental part deals with the preparation of standard patterns based on the length of immersion time in a coppering bath. The precursor layers were applied with Fujifilm Dimatix to various receiver substrates. The individual substrates with the precursor layer were immersed in the copper solution within different time intervals. The structure of the layers of grown copper and their thickness was characterized by a profilometer.
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Fabrication and properties of photocatalyst layers with controlled porosity
Blecha, Tomáš ; Gemeiner, Pavol (referee) ; Dzik, Petr (advisor)
This bachelor thesis deals with fabrication of photocatalyst layers with controlled porosity and investigation of their properties. Polyvinyl pyrrolidone, polyethylene glycol and polyvinyl alcohol were used as templating agents. Prepared compositions were deposited on FTO glass using a drop-casting method and annealed at 450 °C. The structure of thin films was examined using optical and electron microscopy. The thin films were subsequently studied by photoelectrochemical measurements. Most resulting compositions showed relatively good electrical and optical properties, hinting at a potential for future use in practice.
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Optimalization of gel electrolyte for printed UV sensor based on photoelectrochemical cell
Vrbková, Kateřina ; Gemeiner,, Pavol (referee) ; Dzik, Petr (advisor)
This paper deals with the construction of photoelectrochemical cell, used for detection of ultraviolet radiation as a UV sensor. Photoelectrochemical cell consists of three layers, layer of photoactive semiconductor titanium dioxide, carbon electrodes and poly(vinyl alcohol) polymer electrolyte. The sensor layer enables the detection of UV radiation with the subsequent generation of photocurrent. Material printing techniques, such as screenprinting, pad printing and inkjet printing were used to produce the cell. Gel electrolyte was characterized by optical microscopy and rheometry. Sensor functionality was verified by use of electroanalytical techniques.
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Fabrication and characterization of oxidic conductive layers
Bartoš, Radim ; Gemeiner,, Pavol (referee) ; Dzik, Petr (advisor)
Liquid composition for antimony doped tin oxide solgel deposition was prepared. Anorganic precursors of tin and antimony were used (tin(IV) chloride, antimony(III) chloride). ATO nanoparticles were dispergated in composition. This composition was used for spincoating deposition of thin films. Composition was analyzed by thermal analysis TGA and DSC. Sheet resistence of prepared samples were examined by four probe sensing. RMS roughness and thickness was measured by profilometry. Samples were analyzed by scan electron microscopy (SEM), X-ray diffraction (XRD) and X-ray photoelectron spectroscopy (XPS). Transmittance and haze were measured and calculated by UV-VIS spektrometry with integration sphere.
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Fabrication and properties of photocatalyst layers with controlled porosity
Blecha, Tomáš ; Gemeiner, Pavol (referee) ; Dzik, Petr (advisor)
This bachelor thesis deals with fabrication of photocatalyst layers with controlled porosity and investigation of their properties. Polyvinyl pyrrolidone, polyethylene glycol and polyvinyl alcohol were used as templating agents. Prepared compositions were deposited on FTO glass using a drop-casting method and annealed at 450 °C. The structure of thin films was examined using optical and electron microscopy. The thin films were subsequently studied by photoelectrochemical measurements. Most resulting compositions showed relatively good electrical and optical properties, hinting at a potential for future use in practice.
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|
Fabrication of conducting patterns by material electroless plating of printed precursor
Kováčová, Silvia ; Gemeiner,, Pavol (referee) ; Dzik, Petr (advisor)
The subject of this diploma thesis is the preparation of conductive structures by electroless plating of an extruded precursor. The experimental part deals with the preparation of standard patterns based on the length of immersion time in a coppering bath. The precursor layers were applied with Fujifilm Dimatix to various receiver substrates. The individual substrates with the precursor layer were immersed in the copper solution within different time intervals. The structure of the layers of grown copper and their thickness was characterized by a profilometer.
|
|
|
Optimalization of gel electrolyte for printed UV sensor based on photoelectrochemical cell
Vrbková, Kateřina ; Gemeiner,, Pavol (referee) ; Dzik, Petr (advisor)
This paper deals with the construction of photoelectrochemical cell, used for detection of ultraviolet radiation as a UV sensor. Photoelectrochemical cell consists of three layers, layer of photoactive semiconductor titanium dioxide, carbon electrodes and poly(vinyl alcohol) polymer electrolyte. The sensor layer enables the detection of UV radiation with the subsequent generation of photocurrent. Material printing techniques, such as screenprinting, pad printing and inkjet printing were used to produce the cell. Gel electrolyte was characterized by optical microscopy and rheometry. Sensor functionality was verified by use of electroanalytical techniques.
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|
|
Fabrication and characterization of oxidic conductive layers
Bartoš, Radim ; Gemeiner,, Pavol (referee) ; Dzik, Petr (advisor)
Liquid composition for antimony doped tin oxide solgel deposition was prepared. Anorganic precursors of tin and antimony were used (tin(IV) chloride, antimony(III) chloride). ATO nanoparticles were dispergated in composition. This composition was used for spincoating deposition of thin films. Composition was analyzed by thermal analysis TGA and DSC. Sheet resistence of prepared samples were examined by four probe sensing. RMS roughness and thickness was measured by profilometry. Samples were analyzed by scan electron microscopy (SEM), X-ray diffraction (XRD) and X-ray photoelectron spectroscopy (XPS). Transmittance and haze were measured and calculated by UV-VIS spektrometry with integration sphere.
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