Fig. 6

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Thermography images taken under reverse voltage (−12 V) for i-TOPCon solar cells with PECVD in-situ and LPCVD in-situ and ex-situ doped poly-Si(n) wrap-around removal by (a) ADE (b,c, f, g) alkaline batch, (d, h) alkaline etching and (e) without poly-Si wrap-around removal. 156 × 156 mm2. Thermography images show a temperature increase where current flows under reverse conditions.

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