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As scaling becomes increasingly difficult, 3D integration has emerged as a viable alternative to achieve the requisite bandwidth and power efficiency challenges. However mechanical stress induced by the through silicon vias (TSV) is one of the key constraints in the 3D flow that must be controlled in order to preserve the integrity of front end devices. For the first time an extended and comprehensive...
Mechanical stress, crystal defects, and metal contamination in thinned silicon substrates with and without intrinsic gettering (IG) zone have been investigated for three-dimensional (3D) integration. The remnant stress existing after wafer thinning was evaluated using angle-(5deg) polished silicon wafers by micro-Raman spectroscopy (muRS). The metal contamination in the thinned silicon substrates...
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