Section 9: Measuring I-V characteristics of solar cells
Model 2450 Interactive SourceMeter® Instrument User's Manual
9-6
2450-900-01 Rev. C / December 2013
Figure 46: Example of solar cell measurements on the front-panel graph
Set up the solar cell I-V sweep using SCPI commands
The example sequence of SCPI commands generates an I-V sweep on a solar cell. You may need to
make changes so that this code will run in your programming environment.
In this example, the voltage is swept from 0 V to 0.55 V in 56 steps. The resulting solar cell current is
measured. The current and voltage measurements are stored in default buffer 1 (
defbuffer1
).
Send the following commands for this example application:
Command
Description
*RST
SENS:FUNC "CURR"
SENS:CURR:RANG:AUTO ON
SENS:CURR:RSEN ON
SOUR:FUNC VOLT
SOUR:VOLT:RANG 2
SOUR:VOLT:ILIM 1
SOUR:SWE:VOLT:LIN 0, 0.53, 56, 0.1
:INIT
*WAI
TRAC:DATA? 1, 56, "defbuffer1", SOUR, READ
•
Reset the Model 2450.
•
Set to measure current.
•
Set to measure with autorange enabled.
•
Set to use 4-wire sense mode.
•
Set to source voltage.
•
Set to the 2 V source range.
•
Set the current limit to 1 A.
•
Set to sweep voltage from 0 to 0.53 V in 56 steps
with a 0.1 s delay.
•
Initiate the sweep.
•
Wait until the sweep is finished.
•
Read the source and measure values from
defbuffer1
.