Lr. Thompson et al., NMOS DEVICE CHARACTERISTICS IN ELECTRON-BEAM-RECRYSTALLIZED SOI, I.E.E.E. transactions on electron devices, 40(7), 1993, pp. 1270-1276
Characteristics of n-channel MOSFET's fabricated in cold cathode elect
ron-beam-recrystallized silicon-on-oxide layers have been examined. As
sorted crystallographic defects exist in the recrystallized silicon la
yer ranging from highly branched subgrain boundaries to widely spaced
parallel subgrains and rows of threading dislocations. Some of these M
OSFET transistors have characteristics approaching those fabricated in
bulk silicon including almost-equal-to 828-cm2/V . s electron surface
mobilities and 130-mV/decade inverse subthreshold slopes. However, ma
ny of the devices tested exhibited leakage currents up to 10(-6) A/mum
, resulting in high inverse subthreshold slopes and reduced threshold
voltages. Some effects of crystal imperfections on device behavior are
discussed.