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Materials for a CdTe solar cell (ITO/CdS/CdTe/Cu/Pt) were sputtered at room temperature onto kapton, then transformed from resistive layers into a working solar cell by Pulse Thermal Processing (PTP), a novel radiant heat treatment developed at Oak Ridge National Laboratory (ORNL). Unlike conventional device fabrication approaches, the solar cell was a complete device, front-to-back contact, prior...
We have conducted electromigration studies of Cu interconnects with wide-to-narrow transitions and observed bimodal failure distributions. The early failure mode corresponds to a fatal void at the width transition site while the late failure mode corresponds to a fatal void at the cathode. Also, we observed that as the distance between the cathode and transition decreases, the frequency of the early...
Summary form only given. Laboratory experiments that employ petawatt lasers are rapidly approaching parameter regimes once thought to be the exclusive domain of compact astrophysical objects. In fact, experiments and simulations of petawatt lasers impinging on solid density targets have always shown that some fraction (usually ~10-50%) of laser energy couples to hot electrons in the target, which...
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