Marriott Hotel Cologne
In recent years a new type of degradation called LeTID which can lead to significant power losses in solar cells has become a focus of discussion. LeTID stands for Light and Elevated Temperature Induced Degradation. Cells with innovative designs like PERC technology show an even stronger effect than cells with a standard setup.
At the moment, however, there is no standardized testing method to quantify the LeTID phenomenon. Currently available tests differ vastly regarding their parameters like the type of charge carrier injection and operating mode. The effects of enhanced temperature are often not considered.
The project LeTID-Norm aims at providing a harmonized approach to LeTID testing along the value chain of solar modules and establishing an integrated quality management system to avoid LeTID/LID losses. This approach will be proposed for standardization nationally and to IEC after the end of the project.
During the workshop the speakers will present possible root causes of LeTID, currently available test methods and testing equipment. The LeTID-Norm consortium will also introduce their proposal for standardization. Furthermore, the speakers will discuss the proposal, LeTID testing, and parameters with the audience.
The workshop takes place one day before the PV Module Forum 2020 organised by TÜV Rheinland. The two-day event will cover the latest PV cell and module technologies and expand the spectrum on aspects of quality, reliability, quality assurance and standardization.