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Degradation of GaAs Solar Cells
Papež, Nikola ; Pinčík,, Emil (oponent) ; Lazar, Josef (oponent) ; Sobola, Dinara (vedoucí práce)
Gallium arsenide based solar cells are among the most powerful types of solar cells available. Their main advantage is excellent resistance to thermal and ionising radiation, and therefore they are used primarily in demanding conditions. This dissertation describes the state of GaAs photovoltaic cells exposed to thermal stress, high cooling, gamma radiation and broad-spectrum laser irradiation. The samples were examined before, after and during these processes using several analytical and characterisation methods. The measurements were focused on the characterisation of the surface, optical and electrical properties. Limits and new behaviour of this type of photovoltaic cells have been discovered, which are also affected by thin protective and anti-reflective layers.
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Degradation of GaAs Solar Cells
Papež, Nikola ; Pinčík,, Emil (oponent) ; Lazar, Josef (oponent) ; Sobola, Dinara (vedoucí práce)
Gallium arsenide based solar cells are among the most powerful types of solar cells available. Their main advantage is excellent resistance to thermal and ionising radiation, and therefore they are used primarily in demanding conditions. This dissertation describes the state of GaAs photovoltaic cells exposed to thermal stress, high cooling, gamma radiation and broad-spectrum laser irradiation. The samples were examined before, after and during these processes using several analytical and characterisation methods. The measurements were focused on the characterisation of the surface, optical and electrical properties. Limits and new behaviour of this type of photovoltaic cells have been discovered, which are also affected by thin protective and anti-reflective layers.
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Ochranné účinky Cystaminu nebo Amifostinu u savců ozářených gama paprsky nebo neutrony
Kuna, P. ; Dostál, M. ; Neruda, O. ; Petýrek, P. ; Podzimek, F. ; Svoboda, V. ; Šimša, J. ; Špelda, S. ; Vodička, I. ; Volenec, K. ; Knajfl, J. ; Severa, J. ; Vávrová, J. ; Skopec, F. ; Filip, S. ; Rešl, M. ; Heřmanská, J. ; Prouza, Z. ; Navrátil, L. ; Spurný, František ; Pitterman, P. ; Listík, E.
Výsledky našich experimentů s amifostinem a cystominem, oba jsou československé výroby, ukazují, že nejen nitrožilní a nitropobřišnicové injekce, ale také nitrosvalové nebo podkožní aplikace ochranných látek vyvolává dobré preventivní účinky proti ozáření paprsky gama na úrovni tkání citlivých na záření , stejně jako na úrovni celého organizmu u různých malých a velkých laboratorních zvířat.
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