Keithley 4200A-SCS - Page 142

Model 4200A
-SCS Parameter Analyzer Reference Manual Section 4: Multi-frequency capacitance-
voltage unit
4200A-901-01 Rev. C / February 2017 4-49
Formula: CMIN
Formula name: CMIN
Units: F
Description: Minimum capacitance.
Formulator entry:
CMIN = MIN(MAVG(CADJ, 10))+1E-15
Formula: COX
Formula name: COX (C
OX
)
Units: F
Description: Oxide capacitance, usually set to maximum capacitance in accumulation.
Formulator entry:
COX = MAX(MAVG(CADJ, 10))+1E-15
Formula: DEBYEM
Formula name: DEBYEM (λ)
Units: m
Description: Debye length (in meters).
Formulator entry:
DEBYEM = SQRT(ES*K*TEMP/(ABS(N90W)*Q^2))*1E-2
Simplified equation:
Formula: DEPTHM
Formula name: DEPTHM (W)
Units: m
Description: Depletion depth (in meters).
Formulator entry:
DEPTHM = 1E-2*AREA*ES*(1/CADJ-1/COX)
Simplified equation: