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Studies of defects and limits of solid solubility in SPE grown In and Sb implanted silicon

Conference ·
OSTI ID:5728547
Transmission electron microscopy (plan-view as well as cross-section) and high-resolution Rutherford backscattering and channeling techniques have been combined to investigate residual defects and substitutional concentrations of In and Sb in <100> and <111> orientations of ion implanted silicon layers after solid-phase-epitaxial (SPE) growth at 475 to 600/sup 0/C. The maximum concentrations of Sb and In in substitutional sites were found to be, respectively, 1.3 x 10/sup 21/ and 5.0 x 10/sup 19/ cm/sup -3/, exceeding the respective retrograde maxima by factors of 18 and 60. These results provide direct evidence of solute trapping and metastable alloying under solid-phase growth conditions. Accumulation of solute at the crystalline-amorphous interface was observed only for indium above a certain interfacial concentration. At still higher interfacial concentrations, the planar interface was observed to become unstable and SPE growth was retarded.
Research Organization:
Oak Ridge National Lab., TN (USA)
DOE Contract Number:
W-7405-ENG-26
OSTI ID:
5728547
Report Number(s):
CONF-811122-35(Draft); ON: DE82003986
Country of Publication:
United States
Language:
English