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Off-state modulation of SOI floating-body

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4 Author(s)
Chang, J.B. ; California Univ., Berkeley, CA, USA ; Sleight, J.W. ; Jenkins, K. ; Haensch, W.

Off-state modulation of the floating-body potential in partially depleted silicon-on-insulator (PDSOI) transistors from the 90-nm technology generation is observed using pulsed current-voltage (I-V) measurements. Varying the off-value of the gate voltage is shown to either decrease the transient on-current (Ion,trans) of PDSOI devices through gate-to-body leakage or increase Ion,trans due to gate-induced drain leakage. Dependence of Ion,trans on off-state gate bias is not observed in bulk devices, PDSOI devices with body contacts, or fully depleted SOI devices, confirming the role of floating-body in the observed effects. Thus, off-state conditions should be accounted for when considering floating-body effects and when using pulsed I-V measurements to study self-heating.

Published in:

Electron Device Letters, IEEE  (Volume:27 ,  Issue: 7 )