Non-destructive testing with active thermography allows you to detect shunts and micro crack of crystalline solar cells or thin layer solar cells. You can also check the density of charge carrier by the methods of electroluminescence or photoluminescence. These applications are based on a turnkey system called SolarCheck. With a testing time of circa 5 sec. the system can be easily integrated in the production process. The system works with optical excitation as well as with a modulated current signal for excitation.
Measuring Principle
Active thermography is an effective method for non-destructive testing of
several materials. This technique detects not only smallest defects on
surfaces, but also structural defects or air bullets under the component
surface. Contrary to other inspection methods, thermographic solutions are well-suited for inspections of latest materials like composite materials
(GFK/CFK).