In the EL imaging system, current is passed through a solar module in a darkened room, and then a cooled Si-CCD camera is used to capture the infrared light emitting from the excited solar module. Crystal silicon area with higher conversion efficiency gives brighter luminescence.
[PDF Version]
By applying an electrical current to a PV device, EL imaging captures the emitted infrared light using a specialized camera, enabling the identification of defects, cracks, and degradation patterns that are otherwise invisible to the naked eye.
[PDF Version]
Thermal imaging, or infrared (IR) thermography, uses an IR camera to visualize temperature differences across a solar panel. Thermal imaging offers a non-destructive, real-time, on-site method.
[PDF Version]
The visible spectrum and some infrared and ultraviolet wavelengths are most effective for solar panels, while X-rays and gamma rays are too energetic and can damage the cells.
[PDF Version]
