Longi unveils 27.27%-efficient heterojunction back-contact solar cell built with improved laser processing - pv magazine Global

Researchers from Longi and Yangzhou University developed a laser-based manufacturing strategy to mitigate shock-wave-induced damage in HJT back-contact solar cells, improving passivation stability and device performance. The approach yields a certified 27.27% efficient solar cell and provides an industrially viable pathway toward ultra-high-efficiency photovoltaic fabrication.

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