Definition
Electroluminescence (EL) imaging captures the infrared emission from PV cells under applied current, revealing microcracks, soldering defects, PID, and dead cells. Standard quality control during manufacturing and field commissioning.
Key Takeaways
- EL imaging reveals PV cell defects via IR emission under applied current.
- Detects microcracks, soldering defects, PID, dead cells.
- Performed at manufacturing and field commissioning.
- Best done at night or in dark conditions.
- IR thermography is complementary; EL is more sensitive to specific defects.
Frequently Asked Questions
1 commonly searched questions about EL Imaging (Electroluminescence).
What is EL imaging?
Apply forward current to PV module; functioning cells emit IR light; cameras capture image. Defects appear as dark areas.
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