Am. Ionescu et al., IMPROVED CHARACTERIZATION OF FULLY-DEPLETED SOI WAFERS BY PSEUDO-MOS TRANSISTOR, Nuclear instruments & methods in physics research. Section B, Beam interactions with materials and atoms, 112(1-4), 1996, pp. 228-232
The pseudo-MOS transistor technique is used for quick, quasi-non destr
uctive evaluation and comparison of several types of SOI wafers: SIMOX
from different origins and wafer bonding. The effective mobility for
electrons and holes, threshold voltages, film doping, interface state
density and series resistances are extracted as a function of probes p
ressure (15-50 g). The form factor of the pseudo-MOS is accurately eva
luated by comparison with four-point probe measurement taking into acc
ount the correction induced by series resistances.