- Questions: environment in which the LED/Module is operated ?
- For how long? Which driving mode was used?
- Measurements: Current-/Voltage curves, intensity of light, wavelength/colour,
- radiation characteristics
- Non-destructive analysis: x-ray, light optical microscopy, scanning acoustic microscopy
- Destructive analysis: cross-sectioning, opening the package
- Physical analysis: FIB/REM, OBIRCH / Emission microscopy, EBIC, cathodoluminescence



