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Parameter File

The parameter file saves all JV parameters in a single file. It contains the same data as in each of the JV file, but summarized in a single table. The columns are the following:

  • Time (Hours)
  • Voc (V) FW
  • Jsc (mA/cm2) FW
  • V_MPP (V) FW
  • J_MPP (mA/cm2) FW
  • P_MPP (mW/cm2) FW
  • Rs (Ohm) FW
  • R// (Ohm) FW
  • Fill Factor (%) FW
  • Efficiency (%) FW
  • Voc (V) RV
  • Jsc (mA/cm2) RV
  • V_MPP (V) RV
  • J_MPP (mA/cm2) RV
  • P_MPP (mW/cm2) RV
  • Rs (Ohm) RV
  • R// (Ohm) RV
  • Fill Factor (%) RV
  • Efficiency (%) RV

Example data

Updated header structure

This page shows the latest header structure as of software version v2.4.0. Please refer to the JV File page for more information

## Header ##
[General info]
User    Cicci Research
Device  Sample
Cell area (cm2) 1
Test    Stability (JV)
Date    2026-02-24
Time    11:49:25
Temperature 355.01
Note    SMU 1A

[Channel Settings]
Voltage Range   10 V
Current Range   18 mA (L)

[Cell Settings]
Inverted    No
Type    Cell
Cell Area (cm2) 1
#Cells  1

[JV Settings]
Vmin (V)    -0.1
Vmax (V)    0.7
Voltage Step (mV)   40
Scan Rate (mV/s)    200
Scan Direction  FW then RV
Auto-detect Voc Yes
Overvoltage (%) 0

[Environment Settings]
Name    Light Soaker
Humidity    Square4x6:Humidity
Temperature Square4x6:Temperature
Luminosity  Pyranometer:lum

[Day-Night Settings]
Sensor  lum
Unit    mW/cm²
Threshold Value 5
Threshold Duration  0
Night Algorithm Fixed Voltage (no track)
Night JV    Disable
Constant Output 0.2

## Data ##
Time (Hours)    Voc (V) FW  Jsc (mA/cm2) FW V_MPP (V) FW    J_MPP (mA/cm2) FW   P_MPP (mW/cm2) FW   Rs (Ohm) FW R// (Ohm) FW    Fill Factor (%) FW  Efficiency (%) FW   Voc (V) RV  Jsc (mA/cm2) RV V_MPP (V) RV    J_MPP (mA/cm2) RV   P_MPP (mW/cm2) RV   Rs (Ohm) RV R// (Ohm) RV    Fill Factor (%) RV  Efficiency (%) RV
3.710639E-3 4.619658E-1 1.119090E+0 3.651298E-1 9.916345E-1 3.620753E-1 3.450411E+1 2.618983E+4 7.003644E+1 3.620753E-1 4.611090E-1 1.120610E+0 3.604837E-1 9.997452E-1 3.603919E-1 3.357265E+1 2.066390E+4 6.974562E+1 3.603919E-1
1.701685E-1 4.584664E-1 1.077215E+0 3.636256E-1 9.511814E-1 3.458739E-1 3.485409E+1 1.718026E+4 7.003382E+1 3.458739E-1 4.583488E-1 1.075604E+0 3.660001E-1 9.423536E-1 3.449015E-1 3.648911E+1 1.221063E+6 6.995950E+1 3.449015E-1
3.368119E-1 4.583247E-1 1.059331E+0 3.641803E-1 9.323658E-1 3.395493E-1 3.746153E+1 6.202327E+5 6.993555E+1 3.395493E-1 4.589018E-1 1.059199E+0 3.579204E-1 9.418164E-1 3.370953E-1 3.648763E+1 8.734668E+4 6.935142E+1 3.370953E-1
...