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Elevated temperature implantation of GaAs with Si ions

Book ·
OSTI ID:541123
;  [1]
  1. Australian National Univ., Canberra (Australia)
The formation of amorphous layers in GaAs during ion bombardment at elevated temperatures, where dynamic annealing of radiation-induced defects is substantial, is shown to be extremely sensitive to the ion flux, fluence, and implantation temperature. For example, with increasing fluence, damage can first build up extremely slowly, then suddenly collapse to the amorphous phase. Alternately, for a constant ion fluence, a change in flux by one order of magnitude can change the critical temperature for amorphization by 27 C, and at constant flux and fluence, a change of only 6 C can alter the residual damage from small clusters barely visible by conventional transmission electron microscopy and Rutherford backscattering to a thick amorphous layer. The temperature at which this occurs is strongly dependent upon the ion flux and fluence.
OSTI ID:
541123
Report Number(s):
CONF-961202--; ISBN 1-55899-343-6
Country of Publication:
United States
Language:
English

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