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Degradační testy polymerních materiálů vystavených elektrickému poli / Degradation test of polymer material in the high electric fieldsMartynek, Aleš January 2008 (has links)
This document includes methods of testing and measuring of the protective layers used in solar panels with crystallic solar cells. The main emphasis here is placed on the degradation of these materials due to exposure to strong electric field. Main point of diploma thesis is evovle an experimental workplace for electric aging of dielectric materials and monitor changes of material properties. Final knowledges are then analysed with the climate degradation tests. Tested samples were prepared in cooperation with Solartec s.r.o.
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Vliv zastínění na parametry solárních modulů / Shadow effect on solar systems characteristicDus, Ondřej January 2008 (has links)
This work deals with study of shadow effect on solar system characteristic. The general aim is to design and create solar module for study of shadow effect and measurement under solar simulator.
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Fotoluminiscenční metody detekce defektů solárních článků / Solar cells photoluminescence defect detection methodsVala, Zbyněk January 2009 (has links)
This thesis discusses modern methods for fast defect detection of solar cells. For the means of the defect classification, the technological production process of crystalline silicon solar cells is described. The defects are researched by the electroluminescence and prohtoluminescence methods. The Photoluminiscence method is improved by the posibility of using different wavelenght of excitacion sources. The range of using in industrial production is determined for the discussed methods.
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Využití laserových procesů při výrobě solárních článků / Application of laser processes in crystalline silicon solar cells fabricationZapletal, Petr January 2009 (has links)
Master's thesis is aimed at the use of given type of laser in the solar cells manufacturing. The first part of thesis is focused on photovoltaic theory, lasers and photovoltaic applications of solid-state lasers. Second part of thesis is practical realization of theoretical analysis. The evaluation of laser usability for variety of applications on solar cells and recommendation for entry settings on laser.
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Vliv teplotních závislostí luminiscence solárních článků / Influence of temperature dependence of luminescence solar cellsKoutný, Michal January 2010 (has links)
This work deals with determination defects in solar cells using non-destructive methods. Defects are determinating by electroluminescence method and microplasma method in temperature influence. Temperature will be changed by Peltier cells. By using this various temperatures during the testing we can receive more objective results thanks to simulated operation conditions.
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Diagnostické metody solárních článků za velmi nízkých teplot / Diagnostic method of solar cells operating at very low temperaturesBartoň, Jiří January 2011 (has links)
This work deals with the modern diagnostic methods of defects detection of solar cells. Defects are detected by electroluminescence and photoluminescence methods. The main focus of this work is an innovation workplace for measuring solar cell defects at very low temperatures using photoluminescence. Liquid nitrogen is used to cooling solar cells. By using low temperatures can be detection methods to obtain more objektive results of diagnostic defects.
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Měření kvantové účinnosti optoelektronických prvků a návrh laboratorního měřícího systému / Quantum efficiency measurement of optoelectronic components and development of experimental equipmentLipr, Tomáš January 2011 (has links)
This thesis deals with the issue of quantum efficiency measurement of optoelectronic devices. The physical nature of silicon solar cells is explained here. In addition, the quantum efficiency as a concept is introduced. There is also discussed the influence of a solar cell semiconductor structure on the quantum efficiency itself. Furthermore, the thesis is focused on the design of an experimental set-up for automated measurement and data acquisition. The final realization of the step motor control unit is described in detail. It includes local and/or remote operations, design and development motivation. The next chapter is dedicated to analysis of the Matlab source code for remote operation, data acquisition and presentation. The final part of the thesis gives attention to experiments with real structures, not only the solar cells. The obtained results of analyzed measurements are presented at the conclusion.
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Schottkyho solární články na rozhraní grafen/křemík / Graphene-on-silicon Schottky junction solar cellsZahradníček, Radim January 2014 (has links)
This diploma thesis concerns itself with fabrication and characterization of Schottky solar cell on the graphene/silicon interface. Schottky solar cells were manufactured using a front collector electrode from gold, silver and carbon. On the graphene/silicon interface of the Schottky solar cell an interlayer of Al2O3 or SiO2. For the purpose of IV characterization of the manufactured Schottky solar cell a measuring apparatus was assembled.
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Analýza fluktuačních procesů v solárních článcích / Analysis of Fluctuation Processes of Solar CellsMacků, Robert January 2012 (has links)
The thesis deals issue of the silicon solar cells non-destructive testing. The manufacturing technology of solar cells currently features a very high level of perfection. Its further development appears to be limited by amongst other issues imperfect diagnostic methods. The objective of presented research consists in non-destructive studies of processes that influence specimen life and reliability. To this end, I will employ mainly noise based analytical methods in connection with observation of defect optical activities, capacitance measurement etc. These methods are closely related to some specimen bulk imperfections, crystal-lattice defect induced traps, local-stress-subjected regions and, finally, breakdowns, which might bring about specimen destruction. Based on a detailed study and understanding of transport processes, regions in which noise is generated can be identified and appropriate technological measures can be proposed and adopted. Presented research focuses, first of all, on the real solar cell structures, which are inhomogeneous in their nature and are difficult to diagnose. The significant part of this study is attend to the random n-level (in most case just two-level) impulse noise, usually referred to as microplasma noise. This noise is a consequence of local breakdowns in micro-sized regions and brings about reduction of lifetime or destruction of the pn junction. The micro-sized regions have been studied separately by electrical and optical methods and defect properties have been put forward. Nevertheless, no less significant part of the thesis is devoted to the fluctuation modeling of the bulk imperfections in the semi-analytical form.
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Příprava perovskitového solárního článku / Preparing of perovskite solar cellLunga, Jiří January 2016 (has links)
The work deals with the theory of preparing perovskite solar cells. How about basic structures and the specific types of training opportunities and reproducibility of results. In the third part describes the complete preparation of the article, which reached the highest efficiency and the procedure for subsequent repetition of the experiment
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