In this paper off-state drain currents in long-channel inversion mode
SOI MOSFETs are investigated in the range 50-320 degrees C by measurem
ents and simulations. The behavior of high-temperature (T>200 degrees
C) off-state currents is interpreted in terms of diffusion model, base
d on the analysis of carrier distribution in a SOI film in off-state o
f the device. The back-gate biasing and the silicon film thinning effe
cts on high-temperature off-state currents are analyzed.