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Minimization of dopant diffusion during electrical activation is a crucial issue in developing sub-50 nm silicon technology. Excimer laser annealing (ELA) in the melting regime is capable of meeting the requirements on shallow junctions in terms of depth, doping concentration and abruptness. However, in order to be successfully employed it has to be demonstrated that ELA can be integrated in a device...
Laser annealing can be used for applications that require confinement of heat on the top surface in order to preserve the integrity of buried structures. To confine heat near the silicon surface, the most appropriate tool is UV laser. Here, two excimer lasers with different characteristics were used to anneal boron in silicon. The first one has pulse duration of about 180 ns and the second one of...
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