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TechnicalUp to date · Jan 15, 2026

HJT Cell (Heterojunction Technology)

A solar cell that combines crystalline silicon with thin amorphous silicon layers, achieving high efficiency (24-26%) with excellent temperature coefficient and bifacial performance.

Why It Matters

HJT cells perform better than PERC or TOPCon in hot climates due to their superior temperature coefficient. They also have lower degradation rates.

Related Topics

solar panel types compared

Related Terms

Temperature Coefficient

The rate at which a solar panel's power output changes with temperature, expressed as %/°C. A typical coefficient is -0.3% to -0.4% per °C — meaning output decreases as panels get hotter.

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