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Cathodoluminiscence of polysilane composites
Neděla, David ; Kuřitka, Ivo (referee) ; Schauer,, Petr (advisor)
Samples with thin layer of poly[methyl(phenyl)silylene] were prepared for cathodoluminescence measurement. Dependence of cathodoluminescence on temperature was studied on these samples. Spectra of emitted light were measured on the samples when they were gradually heated to 20, 50, 75, 100 and 125°C. Kinetics of the process of poly[methyl(phenyl)silylene] regeneration at higher temperature was observed. Samples of polysilylene were displayed by scanning electron microscopy.
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Cathodoluminiscence of polysilane composites
Neděla, David ; Kuřitka, Ivo (referee) ; Schauer,, Petr (advisor)
Samples with thin layer of poly[methyl(phenyl)silylene] were prepared for cathodoluminescence measurement. Dependence of cathodoluminescence on temperature was studied on these samples. Spectra of emitted light were measured on the samples when they were gradually heated to 20, 50, 75, 100 and 125°C. Kinetics of the process of poly[methyl(phenyl)silylene] regeneration at higher temperature was observed. Samples of polysilylene were displayed by scanning electron microscopy.
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Analýza poly[methyl(phenyl)silylene] degradovaného elektronovým svazkem
Horák, Petr ; Schauer, Petr
Polysilanes (PSi) are a broad class of organic materials whose basic building block is a chain built up of silicon. The susceptibility to material degradation is a characteristic property of PSi. PSi are degradable for example by ultraviolet radiation or by electron beam. The degradation of the material decreases intensity of luminescence. Poly[methyl(phenyl)silylene] (PMPSi) was selected as a typical representative of PSi.
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Účinek elektronového svazku na poly[fenyl(methyl)silylen]
Horák, Petr ; Schauer, Petr
The study of Poly[Methyl(Phenyl)Silylene] properties using cathodoluminescent method is complicated by the material degradation. The speed of degradation depends on the irradiation time as well as on the current density of the excitation beam. CL investigation of PMPSi proved creating of metastable states in the material. The degradation is a reversible process in this case.
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