Set Up The Solar Cell I-V Sweep From The Front Panel - Tektronix Keithley SourceMeter 2450 User Manual

Section 9: Measuring I-V characteristics of solar cells

Set up the solar cell I-V sweep from the front panel

This is an example of an I-V test that sweeps voltage from 0 V to 0.55 V in 10 mV steps and
measures the resulting current. You can then view the data on the graph screen.
To set up the application from the front panel:
1. Make connections to the instrument and device under test (DUT) as described in
connections
2. Press the POWER switch on the front panel to turn on the instrument.
3. Reset the instrument:
a. Press the MENU key.
b. Under System, select Info/Manage.
c. Select System Reset.
d. Select OK.
4. Press the HOME key.
5. Press the FUNCTION key.
6. Under Source Voltage and Measure, select Current.
7. Press the MENU key.
8. Under Measure, select Settings.
9. Set Sense to 4-Wire Sense. A warning is displayed.
10. Select OK to clear the warning.
11. Press the MENU key.
12. Under Source, select Sweep.
13. Set the Start level to 0 V and select OK.
14. Set the Stop level to 0.55 V and select OK.
15. Set the Step level to 10 mV and select OK.
16. Swipe the SWEEP SETTINGS screen until you see Source Limit.
17. Set Source Limit to 1 A and select OK.
18. Select Generate. This sets up a trigger model for the sweep.
19. Press the MENU key.
20. Under Views, select Graph.
21. Press the TRIGGER key to initiate the trigger model. The output turns on and a RUN indicator is
visible at the top of the screen while the sweep is running.
22. Press the trigger key again to repeat the sweep.
The following figure shows an example of solar cell I-V measurements on the front-panel graph. Note
that the current is negative on the graph because the 2450 is sinking current.
9-6
(on page 9-2).
Model 2450 SourceMeter® Instrument User's Manual
2450-900-01 Rev. E / August 2019
Device