Quick Summary
Heterojunction (HJT) cells combine crystalline silicon with ultra-thin layers of amorphous silicon on both sides. This hybrid design delivers superior cell efficiency (23%+), low temperature coefficients (-0.26%/°C), and high bifaciality.
HJT cell architectures offer some of the best high-temperature performance coefficients in the clean energy industry, making them popular for premium, hot-climate installations.
Why HJT Cells Offer Premium Performance
- Low Temperature Coefficient: At -0.26%/°C, HJT modules lose less power in heat compared to other cells.
- High Bifaciality: Standard HJT cells naturally support symmetrical dual-sided absorption.
- Longer Life: HJT arrays display extremely low degradation rates over 30 years.
Frequently Asked Questions
Is HJT better than TOPCon?
HJT generally outperforms TOPCon in temperature performance and degradation limits, but it is currently more expensive to manufacture.