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Confocal micro-Raman spectroscopy allows for spatially resolved measurements of the phonon energy in silicon, which is correlated to mechanical stress. Mechanical stress is a tensorial quantity. For the confocal measurement geometry and certain crystal orientations approximations have been derived in the past which correlate the shift of the Raman frequency to a scalar stress value. For optimization...
An improved understanding of the interface situation between metal and laser-structured semiconductor for nickel-copper plated solar cell contacts is created by micro characterization using SEM and Raman spectroscopy. A special focus is set on laser ablation with high energy density and the resulting mechanical contact adhesion. This aims to increase the flexibility of the process towards variable...
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