Situation
The decisive characteristic essential to a solar cell is its output. A precise loss analysis can identify unexploited potential, which is one of the cornerstones of process optimization and troubleshooting. To do this, however, a clear understanding of cell behavior is indispensable. The GP SUN-TEST is an innovative Sun simulator that carefully measures the current-voltage characteristic of solar cells, which it uses to determine values for open current voltage, short-circuit current, fill factor, and efficiency, as well as precisely derive other values, such as parallel and series resistance. By determining all of these values, this instrument helps greatly to understand cell behavior and identify improvement potential.
Principle
- I-V curve illuminated, I-V curve unilluminated, and Isc/Voc test
- Continuously illuminated gas discharge lamp (not a flash tester)
Advantages
- Offers complete control over measurement parameters
- Quick and easy evaluation of measured data
Technical Data
Topic |
Description |
System Layout |
Continuous discharge lamp for light IV curve - SUN-TEST Pro class A light source (IEC 60904) |
Samples to be measured |
- Mono- and multi-crystalline solar cells - Square or pseudo square - Textured or non-textured surface |
Wafer size |
125 … 210 mm |
Measurements |
- Illuminated current/voltage curve - Dark current/voltage curve - Isc versus Voc measurement (under different illumination intensity) |
Measurement Duration |
2 - 15 sec (depending from measurements and parameters) |
Evaluation model |
- Standard parameters from curve fitting (Isc, Voc, FF, efficiency, Rs, Rp) - Simultaneous fitting of all curves with two-diode-model |
Optional setup |
Three busbar setup |
Note: All technical details are subject to change without prior notice. Only technical specifications contained in an offer are binding.