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Activation of Si-N Modes in Silicon by Pulsed Laser Annealing*
Published online by Cambridge University Press: 25 February 2011
Abstract
Retention and bonding of nitrogen implanted into crystalline Si were examined by infrared absorption (ir) and transmission electron microscopy (TEM) after furnace and pulsed laser annealing. Localized Si-N vibrational modes for N-N pairs are observed, and the associated ir band intensities increase upon pulsed annealing. Furnace annealing above 600°C decreases the ir intensity for N-N pairs and fine structure defects appear in TEM. Subsequent laser annealing removes most of the fine structure and reactivates the pair spectrum which we interpret as dissolution of N precipitates and pair formation upon quenching from the melt. Any realistic model for N in Si must include the formation and consequences of N-N pairs.
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- Copyright © Materials Research Society 1985
Footnotes
This work performed at Sandia National Laboratories supported by the U.S. Department of Energy under contract number DE-AC04-76DP00789.