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The space charge formation at metal/yttria-stabilized zirconia interface is investigated by combining defect formation energies from first principles with a parallel-sheets model. In this model, the crystal orientation and interlayer distances between crystal planes are taken into account explicitly. This is in contrast to previous space charge models, which utilized a continuum approximation. The...
We examine the space charge layer formation at metal/ionic conductor interfaces by solving Poisson's equation using defect energetics calculated from first principles. The scheme is applied to zirconia, and we find that oxidizing atmosphere and high valence band offset result in negative space charge accumulation at the interface, while reducing atmosphere and low valence band offset result in positive...
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