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Electroluminescence camera systems are available for imaging cracked cells and other defects in still images or video. Solutions are available for the lab from small R&D cells to full modules, and travels systems are available for outdoor testing. Systems come with a modified DSLR camera, filters, lens, tripod or stand, laptop or tablet computer, power supply, MC4 cables to place between power supply and solar panel, and instructions for use and image enhancement.
The LoadSpot performs static and cyclic (dynamic) load tests for standard IEC certification testing. The bending tests are performed by applying vacuum or air-pressure to the rear side of the module, thus leaving the front side open for EL and IV testing. For standard panels, applying a light vacuum to the rear side allows for a quick crack-opening test to predict future degradation were the closed cracks to become fully open in the field.
IV & EL Testing of solar panels in the field in a trailer-based mobile testing lab. Quality control for new installations and more.
Fast measurement of contact resistivity for solar cell grid structures. More accurate and lower variability than using manual probing. Also measures line resistivity.
Nondestructive contact resistance measurements.
Measure resistance between metallization and the silicon wafer
Hide test patterns within busbars (no cosmetic or efficiency effects)
Automatic alignment of probehead to test patterns
Standalone or in-line applications
Test every cell on a production line (<3 sec takt time)
Adaptable to in-line or rotary table automation