Über die Kondensation von 1, 3-Dioxynaphtoesäure-Äthylester-2 mit Benzaldehyd

Ohne ZusammenfassungZum Schlusse möchte ich auch an dieser Stelle meinem hochverehrten Lehrer, Prof. Dr. Guido Goldschmiedt, für die liebenswürdige Förderung, die er meiner Arbeit angedeihen ließ, warmen Dank aussprechen.     

Tabak

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Untersuchung des Mehles

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Holzkonservierung

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Influence of substrate orientation on the electrical properties of CuInSe2 epitaxial layers on GaAs substrates

The electrical properties of CuInSe₂ epitaxial layers on (111)A-, (110)-, and (100)-oriented GaAs substrates are investigated. At substrate temperatures T_sub ≧ 820 K the p-type conductivity observed is governed by an acceptor state with an ionization energy of about 110 meV independent of the substrate orientation. At T_sub ≦ 770 K three different acceptor states are found in dependence on the substrate orientation: 390 meV for (111)A-, 110 meV for (110)-, and a very shallow acceptor for (100)-oriented substrates. A possible correlation between these acceptor states and intrinsic defects is proposed.     

Influence of source composition on the properties of flash-evaporated thin films in the Cu–In–Se system

Using CuIn₂Se_3.5 as source material epitaxial layers are obtained on (111)A- und (100)-oriented GaAs substrates by flash evaporation in the substrate temperature range T_sub = 720—870 K. The composition of the films is between CuInSe₂ and CuIn₂Se_3.5. The structural properties of the films are similar to those for CuInSe₂ epitaxial layers and refer to a chalcopyrite-like structure. The films are always p-type conducting but different acceptor states are found in dependence on the substrate temperature.     

Review of Deep Inelastic Charged Lepton Scattering

The present situation in deep inelastic lepton-nucleon scattering is reviewed from an experimenter's point of view. After describing, in some detail, the quark-parton model (QPM) predictions the basic ideas of Quantum Chromodynamics (QCD) are illustrated. The perturbative QCD predictions for deep inelastic scattering are summarised discussing also their theoretical uncertainties of today. Past and present experiments on deep inelastic electron and muon scattering are compared regarding their ability to test these predictions. It is shown that all data is in very good agreement with the QPM and fully consistent with perturbative QCD. New results on lepton scattering off nuclei are discussed and confronted to recently invented phenomenological models.