In-situ formation of local inhomogeneities in semiconductors
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The transport properties of ionic conductors such as α-AgI and Li0.23La0.69Fe0.3Ti0.7O3 and of electronically conducting semiconductors such as α-Ag2S and AgxWO3 as a result of the application of voltages smaller than the decomposition voltage by two ionically blocking electrodes were investigated. The mobile ionic as well as the mobile electronic species are shifted from one electrode side to the other one. The change in the stoichiometric composition within the sample as a result of this transport process causes the formation of local inhomogeneities leading to changes in the electrical and optical properties. The experimental results also show that Nernst's law is not only valid for ionic conductors but also for semiconductors as well when a steady state is reached for ionically blocking electrodes.
KeywordsPhysical Chemistry Analytical Chemistry Steady State Optical Property Electronic Material
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