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Application of the inkjet-honeycomb-texture in silicon solar cell production

: Nievendick, J.; Stocker, M.; Specht, J.; Glover, W.; Zimmer, M.; Rentsch, J.

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Energy Procedia 27 (2012), S.385-389
ISSN: 1876-6102
International Conference on Crystalline Silicon Photovoltaics (SiliconPV) <2, 2012, Leuven>
Zeitschriftenaufsatz, Konferenzbeitrag, Elektronische Publikation
Fraunhofer ISE ()
PV Produktionstechnologie und Qualitätssicherung; Silicium-Photovoltaik; Charakterisierung; Zellen und Module

In this work a honeycomb texture (HC-texture), which is created by isotropic wet chemical under-etching of an inkjetted mask, was successfully applied to Floatzone silicon (FZ-Si) wafers with a diameter of 150 mm. A nearly perfect HC-texture with 18.2 % reflection after texturization was obtained despite printing irregularities in the masking step. Lifetime measurements after emitter diffusion and anti-reflection coating show that the HC-texture is also better passivated than of the 25.8 % reflecting acidic texture that was used in the reference group. An overall efficiency gain of 0.6 % might be deduced when using a HC-texture instead of the acidic texture.