Dual-oxide diffusion barrier boosts efficiency of mass-produced TOPCon solar cells by 0.07 percentage points

Chinese researchers developed a dual silicon oxide diffusion barrier strategy that improves phosphorus distribution and reduces contact resistance and optical losses in TOPCon solar cells. According to the report, the industry-compatible process raised average cell efficiency from 27.15% to 27.22%, an absolute gain of 0.07 percentage points.

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