Zinc oxide (ZnO) powders were synthesized by a simple hydrothermal process in the temperature range of 50 to 100 C. Nanocrystallites were formed by a simple hydrothermal route from aqueous solutions of zinc nitrate hexahydrate (Zn(NO3)2·6H2O) and NaOH under controlled process conditions such as precursor concentration (0.07 to 1 mol/L), reaction pH (7 to 11) and temperatures. Single phase ZnO p...

Growth experiments show significant differences in the crystallization of ultrathin CaTiO3 layers on polycrystalline Pt surfaces. While the deposition of ultrathin layers below crystallization temperature inhibits the full layer crystallization, local epitaxial growth of CaTiO3 crystals on top of specific oriented Pt crystals occurs. The result is a formation of crystals embedded in an amorphou...

Groundwater is one of the cleanest natural sources drinking water available, which, at same time, often requires deironing – removal dissolved iron ions before could be used. In this paper, there are describe preparation, characterization, and properties surface-modified refractory chamotte granules, used as active components fillers for filters. For research, surface modification was made by s...

Much effort has been devoted to improving the performance of Organic Light Emitting Devices (OLEDs) by increasing their efficiency, narrowing or broadening their emission spectra, or polarizing their emission. In this work we examine the benefits of incorporating other material systems within organic host matrices to generate efficient hybrid organic/inorganic LEDs of saturated color. Specifica...

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All electronic devices are plagued with 1/f noise originating from many causes. The most important factors contributing to 1/f noise in a semiconductor is believed to be recombination of carriers and their trapping at defects and impurity sites. Adsorption of moisture and electron acceptor molecules enhances the intensity of 1/f noise. Amazingly, some molecular species that strongly chelate to ...