Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 5 of 5 for “"excitation states"”.
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Spectral photoluminescence for the characterization of excitation states in semiconductors and fluorescence solar collectors with manipulation of the in and out coupling of radiation
In dieser Arbeit werden Ergebnisse verschiedener experimenteller Aufbauten (z. B. winkelabhängige Photolumineszenz) vorgestellt um die Propagation von elektromagnetischer Strahlung innerhalb und außerhalb von Absorber am Beispiel von kristallinem Silizium und Fluoreszenzkollektoren mit und ohne …
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Optical Properties of Rare-Earth Doped YBO3 Phosphor Materials
… photoluminescence, photoluminescence excitation, and Raman spectroscopy techniques. The different microstructures of YBO3:Eu3+ have synthesized with hydro(solvo)thermal technique using different molar ratios of starting precursors and solvents. The high chromaticity is achieved with …
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Electron Tunnelling Study of High-Temperature Superconductors
… spectroscopy to measure the density of excitation states of the recently discovered high-temperature superconductors. Tunnelling is the most sensitive method for measuring a superconductor’s energy gap, and historically has provided important evidence for the microscopic mechanism of …
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Effects of Solar Soft X-rays on Earth's Atmosphere
… es- timated from the cross-sections of its excitation states (using predissociation factors) and dissociative ionization channels. Predissociation is the transition without emission of radi- ation from a stable excited state to an unstable excited state of a molecule that leads to …
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Der psychiatrische Notfall im Rettungsdienst : eine Herausforderung des Notarztes?
… not at all. Hardly regional differences show the excitation condition and the social crisis. These diagnoses employ the emergency services in city and country equally. Likewise the frequency of the psychiatric emergency per inhabitant lies on the average in the three examined regions with …