Naturwissenschaft, Mathematik, Informatik

In past decades, miniaturization of materials was immanent in all fields of technology, especially in semiconductor industry. Nowadays, miniaturization of semiconducting compounds reached a level where established manufacturing processes reach their technical limits. Atomic Layer Deposition (ALD) offers an alternative method for the deposition of ultra-thin metallic films, which is a crucial step in the fabrication of semiconducting compounds. Based on a chemical reaction between surface and gas phase, ALD is a process which touches both synthetic chemistry and material...

The outstanding importance of phosphorus (P) in all living cells makes it an essential nutrient. Its pivotal use as a fertilizer and the finiteness as a natural resource lead to a new episode of historic importance: A possible upcoming phosphate crisis. In this book an overview on the role of phosphorus as a nutrient and as a fertilizer as well as the underlying soil dynamics is given. The flows of phosphorus in Austria are shown by using the method of...

Fabrication of ZnO QD’s for visible light emission applications, surface modulation for stability in dispersions and defect control at the surface is vitally important. Therefore long alkyl chain group (e.g. oleate) and biological molecule cysteine were used together with sol-gel chemistry as vectors to regulate reactivity of the ZnO QD’s and their visible light emission. Additionally, using different ligand concentrations and reaction conditions, semiconductor nanostructures of unusual geometrical shapes were synthesized and characterized. Hexagonal crystal growing habit of ZnO provided...