National Repository of Grey Literature 3 records found  Search took 0.00 seconds. 
Development Of Stable Perovskite Cells
Strachala, Dávid ; Kratochvíl, Matouš ; Hylský, Josef
The main purpose of the work is to find an optimal way for the preparation of stable perovskite photovoltaic cell. Ten solar cells have been created with the active area consisting of CH3NH3PbI3 and CH3NH3PbI3-2Cl2 solutions. It was concluded that the CH3NH3PbI3-2Cl2 structure is more stable against environmental influences because of chlorine addition. Supplementary experiments were done to confirm the moisture influence. During the research has been found that films formed in humidity with 15 % RH have a different structure than perovskite manufactured in dry glove boxes filled with nitrogen atmosphere. We are concluding that perovskite grains have unified and their volume has increased. These processes have had a positive impact on the efficiency and stability of the cells.
Optimization of organic solar cells
Kratochvíl, Matouš ; Novák, Vítězslav (referee) ; Weiter, Martin (advisor)
This diploma thesis focuses on the preparation of large-scale organic solar cells using techniques compatible with large volume production. The theoretical part consists of research summarizing the basic theoretical background of the function of organic solar cells and the current state of investigation of the shift from laboratory to large-scale production. The experimental part deals with the optimization of methods of preparation of layers of structure of solar cells, which can be converted into industrial scale.
Preparation and characterization of thin organic photovoltaic layers
Kratochvíl, Matouš ; Zmeškal, Oldřich (referee) ; Weiter, Martin (advisor)
This bachelor thesis focuses on preparation of organic solar cells and characterization of their properties. The theoretical part consists of literature search focused on current findings in this area and basic theoretical knowledge of the mechanisms of solar cells functioning. The experimental part of the thesis deals with the preparation of solar cells, targeting large cells, and characterization of basic electrical and optical properties of these cells.

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