Abstract
Thin solar cells on industrial Czochralski-material were produced and analyzed. For the Random Pyramid-Passivated Emitter and Rear Cell (RP-PERC) with planar rear surface, a maximum efficiency of near 20% was achieved for 115 as well as 165 μm thickness. In comparison, cells textured at the rear surface with a standard industrial process reached about a 2% (absolute) lower efficiency. This difference is consistently explained by an increased rear surface recombination, whereas light trapping properties are excellent for both rear surface treatments. The Cz-specific light-induced degradation of the thin cells is investigated.
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