AI Summary

Longi researchers discovered that applying edge masking to heterojunction back‑contact solar cells suppresses edge recombination, boosting measured efficiency. Experiments identified a 5 mm masking width as optimal for this effect. Simulations indicate that combining edge masking with selective metallization could raise cell efficiency from the current 26.85 % to a theoretical ceiling of 27.39 %. The findings suggest a practical pathway for incremental performance gains in advanced photovoltaic modules.

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