Measure contact resistivity | Measure line resistance
Optimize solar cell performance
- R&D experiments
- Factory quality control
- Accurate values for grid modeling
Metal gridline measurement
- Contact resistivity to silicon (mΩ-cm2)
- Line resistance (mΩ/cm)
- Sheet resistance between gridlines (Ω/square)
- < 30 sec/test including sample loading & alignment
- 10 current injection and 10 voltage measurement probes
- Microscope with screen display and x-theta adjustment for fast sample alignment
- Correction factors for voltage drop down narrow fingers
Benefits over manual contact resistivity measurements
- Much faster test time
- More consistent results
- No room-light artifacts
- Mapping across the test strip
- Automated data analysis
- Advanced algorithms
Specifications
-
Finger to finger resistance measurements
-
Range of resistance measurement – 0.1 – 1000 ohms
-
Accuracy of resistance measurement – 0.4%
-
Repeatability – 0.4%
-
Minimum probe pitch- 1.3 mm (every other finger for smaller pitches)
-
Minimum practical finger pitch – 1.1 mm
-
Range of finger pitches on a probe head measuring 5 fingers – 0.8 mm