ISSN:0005-9021    

DOI:10.1002/bbpc.19850890202

出版商:Wiley‐VCH Verlag GmbH&Co. KGaA, Weinheim    

年代:1985

数据来源: WILEY

ISSN:0005-9021    

DOI:10.1002/bbpc.19850890203

出版商:Wiley‐VCH Verlag GmbH&Co. KGaA, Weinheim    

年代:1985

数据来源: WILEY

ISSN:0005-9021    

DOI:10.1002/bbpc.19850890204

出版商:Wiley‐VCH Verlag GmbH&Co. KGaA, Weinheim    

年代:1985

数据来源: WILEY

ISSN:0005-9021    

DOI:10.1002/bbpc.19850890205

出版商:Wiley‐VCH Verlag GmbH&Co. KGaA, Weinheim    

年代:1985

数据来源: WILEY

摘要:

AbstractRods of silver iodide with silver electrodes at both ends were decelerated by letting them drop from different heights at a temperature of 170°C to a plastic material on the ground. In the moment of striking the ground the forces of inertia of the mobile silver ions caused voltage pulses, which were proportional to the velocity before striking and to the length of the silver iodide rods and which could be calculated using the mass and electrical charge of the silver ions. Calculated and measured voltage pulses were in agreement within the accuracy of measurement of 1%

ISSN:0005-9021    

DOI:10.1002/bbpc.19850890206

出版商:Wiley‐VCH Verlag GmbH&Co. KGaA, Weinheim    

年代:1985

数据来源: WILEY

摘要:

AbstractElectrochemically grown p‐Si/SiO2structures were anodically biased in a glycol‐water‐KNO3electrolyte at voltages below the growth voltage and studied as a function of time by means of ellipsometric and capacitance measurements. In all cases, including zero bias, further growth of the oxide film was observed by ellipsometry. The growth mechanism appeared to be different for low and for high biasing voltages. From the comparison between ellipsometric and capacitance results, additional evidence was collected for the hypothesis that water or a species originating from water diffuses into the oxide film, modifying its dielectric properties and possibly leading to erroneous determinations of the layer thickness by capacitance measure

ISSN:0005-9021    

DOI:10.1002/bbpc.19850890207

出版商:Wiley‐VCH Verlag GmbH&Co. KGaA, Weinheim    

年代:1985

数据来源: WILEY

摘要:

AbstractPhotouptake of oxygen in aqueous CdS suspensions loaded with RuO2or Rh2O3leads to the formation of sulphate and cadmium ions following the stoichiometry\documentclass{article}\pagestyle{empty}\begin{document}$${\rm{CdS}}\;{\rm{ + }}\;{\rm{2O}}_{\rm{2}} \to {\rm{CdSO}}_{\rm{4}}.$$\end{document}This reaction constitutes also the dominant pathway in bare CdS suspensions. In the latter case, hydrogen peroxide is formed as a byproduct.

ISSN:0005-9021    

DOI:10.1002/bbpc.19850890208

出版商:Wiley‐VCH Verlag GmbH&Co. KGaA, Weinheim    

年代:1985

数据来源: WILEY

摘要:

AbstractIf the binary transition metal oxide Co1‐δO is exposed to an oxygen potential gradient, a steady state flux of cation vacancies from the high to the low potential and a corresponding flux of cobalt cations in the opposite direction are induced. Thereby, the crystal as a whole moves to the side of the higher oxygen activity. By solving the diffusion equation for the vacancy transport, the following results are obtained: At the reducing side, the Co1‐δO‐surface is morphologically unstable. At the oxidizing side, the surface is morphologically stable. In addition, the influence of surface tension, surface diffusion, phase boundary reaction and concentration dependence of the chemical diffusion coefficient on the movement of the crystal and the morphological stability of the gas/solid interfaces is analysed. The theoretical results are verified experimentally by exposing Co1‐δO‐discs to oxygen potential gradients in various

ISSN:0005-9021    

DOI:10.1002/bbpc.19850890209

出版商:Wiley‐VCH Verlag GmbH&Co. KGaA, Weinheim    

年代:1985

数据来源: WILEY

摘要:

AbstractThe relationship between the component activities and gas solubilities of binary metallic melts was derived from the ternary Gibbs‐Duhem equation. The thermodynamic behaviour of the alloys was interpreted by means of atomic interactions. Excess free energies in the liquid range for the systems Al‐Co, Al‐Ni, Co‐Ge, Co‐Si, Fe‐Ge, Ge‐Ni and Ni‐Si were calculated at 1600 °C from their known hydro

ISSN:0005-9021    

DOI:10.1002/bbpc.19850890210

出版商:Wiley‐VCH Verlag GmbH&Co. KGaA, Weinheim    

年代:1985

数据来源: WILEY

摘要:

AbstractThe electrochemical spectral Sensitization of SnO2and ZnO electrodes with rhodamine B and rose bengal has been studied in acetonitrile. The photocurrent quantum yield was shown to depend remarkably on the doping level of the semiconductor electrodes. The quantum yield approached unity under the most preferable conditions. The effect of hydroquinone on the Sensitization process (supersensitization) also depended on the semiconductor doping level. These results, together with the fluorescence quenching behaviors of the dyes adsorbed on the semiconductors, are taken into account to elucidate the mechanism of electrochemical spectral sensitization and supersensitization.

ISSN:0005-9021    

DOI:10.1002/bbpc.19850890211

出版商:Wiley‐VCH Verlag GmbH&Co. KGaA, Weinheim    

年代:1985

数据来源: WILEY