Obstacle
The change to a light capping rear side of the cells, was found to make bifacial PERC cells and modules sensitive to new types of PID at the rear side, namely PID of the de-polarization type (PID-p) and a corrosive PID mechanism (PID-c).
Solution
In order to test cells for these kinds of PID, the PIDcon bifacial was developed. It is stressing the complete cell with temperature, illumination and high voltage, which can be polarized in both directions. By measuring the IV curve under illumination the PID sensitivity can be determined.
Applications
PID detection at cell level
Research, Production & Quality Control of PERC, AL-BSF, PERC+, bifacial PERC, PERT, PERL and IBC solar cells
For more information, please visit www.pidcon.com
