A. Agarwal, T. E. Haynes, V. Venezia, D. Eaglesham, M.K. Welson, Y. Chabal, O. W. Holland
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Efficient production of silicon-on-insulator films by co-implantation of He/sup +/ with H/sup +/
The thin film separation process with H/sup +/ proceeds by both chemical interactions (bond breaking and internal surface passivation) and physical interaction (gas coalescence, pressure, fracture) of implanted H/sup +/ with the Si substrate. It is difficult to isolate the contribution of each component to the overall process using implantation of H only. In this work, we have combined H/sup +/ and He/sup +/ gas implantation to decouple the physical and chemical contributions to the blistering and thin film separation processes. We have observed that combination of H and He gas implants results in a synergistic effect that allows the threshold dose for both processes to be significantly reduced.
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