Table of Contents
Advertisement
enabling
innovative electronics
Output Characteristics: Gate
9. On Measurement Settings and Device Parameters, in the Output Characteristics (IV) section,
enter the Gate SMU Name and Channel. SMU Name is the SMU alias name specified in MAX
(KeithleyO or SMUA), while channel is a for Keithley SMU or 0 for PXI.
10. Define the family of IV curves to sweep by choosing V
Gate Sweeps is the number of IV curves to sweep at constant gate voltage, with the first
curve swept at V
a constant gate voltage given by
V
= V
+nΔV,
Gate
GS Start
Eq. 18
with
Eq. 19
and n=1, 2, 3...(Gate Sweeps-1).
Note: Remember that p-type transistors are switched ON with negative voltage, while n-type require
positive voltage to operate.
11. Enter the Delay, the gate source settling time. For Organic OFETs, typical settling time can
vary from a few tens of milliseconds to hundreds of milliseconds. See Application
Measurement: Advanced Settings
Note: The unit of measure of Delay is seconds. Enter 0.1 or 100 m to set a 100 milliseconds
gate source settling time. Do not enter a very large delay time, such as 10 seconds,
otherwise Keithley will return a timeout error.
12. Enter Current Limit. Current Limit, in Ampere, specifies the maximum current that the SMU
is expecting to measure during the current session. Therefore, the SMU determines the
measurement current range from this value. For more information on Current Limit,
measurement range and the implication of the latter on resolution and accuracy, refer to
Acquisition Settings: Output Characteristics (IV), Gate
Accuracy, as well as the SMU Data Sheet.
13. Enter the maximum leakage current, in Ampere, using Max Gate Current.
Note: If the measured gate (leakage) current is greater than Max Gate Current, SuperFACT
will stop the DUT acquisition and start the acquisition of the successive device, if any.
Ossila Ltd
= V
and the last at V
Gate
GS Start
,
for further information on the choice of the settling time.
Copyright © 2009-2015
Start, V
End and Gate Sweeps.
GS
GS
= V
. The other curves are then swept at
Gate
GS End
and
Calculation of the Measurement
Settings:
46
Advertisement
Table of Contents
