CRYSTAL RESEARCH AND TECHNOLOGY, vol.38, no.12, pp.1037-1041, 2003 (SCI-Expanded)
The carrier concentration-depth profiles of ultrathin boron layers in Si, grown by molecular beam epitaxy, are determined by the electrochemical capacitance-voltage (ECV) and the spreading resistance (SR) profiling techniques. Secondary ion mass spectrometry (SIMS) is employed as a base for the comparison of the results. It has been shown that, under carefully chosen conditions, both ECV and SR techniques are able to resolve ultrathin layers including a delta layer, however ECV match better with the results of SIMS than that of SR. (C) 2003 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.