Definition
Fill Factor (FF) is the ratio of Pmax to the product of Voc × Isc, measuring how 'square' the I-V curve is. Modern c-Si modules: 0.75–0.85. Higher FF indicates better cell quality and lower series resistance.
Key Takeaways
- FF = Pmax / (Voc × Isc).
- Quality indicator for PV modules.
- Modern c-Si: 0.75–0.85.
- Higher FF = better cell, lower R_series.
- Datasheet reports FF or it can be computed from Pmax, Voc, Isc.
Frequently Asked Questions
1 commonly searched questions about Fill Factor.
What is fill factor?
Ratio Pmax / (Voc × Isc). Quality metric for PV modules. 0.75–0.85 typical c-Si. Higher = lower series resistance, better cell quality.
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