N. Hefyene et al., Adaptation of the pseudo-MOS transistor for the characterization of silicon-on-sapphire films, SOL ST ELEC, 44(10), 2000, pp. 1711-1715
The transport properties at the Si-Al2O3 interface are probed directly on v
irgin silicon-on-sapphire (SOS) wafers. The measurement consists of the act
ivation of the pseudo-MOS transistor, once the sapphire substrate has been
aggressively thinned down to 30 mum. Typical transistor characteristics are
measured and used to uncover the parameters that reflect the quality of SO
S wafers: carrier mobility, density of interface traps, and residual doping
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