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Approaching 22% efficiency with multicrystalline n-type silicon solar cells

: Benick, J.; Müller, R.; Schindler, F.; Richter, A.; Hauser, H.; Feldmann, F.; Krenckel, P.; Riepe, S.; Schubert, M.C.; Hermle, M.; Glunz, S.W.

Volltext urn:nbn:de:0011-n-4774455 (575 KByte PDF)
MD5 Fingerprint: 2b254b60760ff0d3ca317f043b60c736
Erstellt am: 28.2.2018

Smets, A.:
33rd European Photovoltaic Solar Energy Conference and Exhibition, EU PVSEC 2017 : Proceedings of the international conference held in Amsterdam, The Netherlands, 25 September - 29 September 2017
München: WIP, 2017
ISBN: 978-3-936338-47-8
ISBN: 3-936338-47-7
European Photovoltaic Solar Energy Conference and Exhibition (EU PVSEC) <33, 2017, Amsterdam>
Konferenzbeitrag, Elektronische Publikation
Fraunhofer ISE ()
Solarzellen - Entwicklung und Charakterisierung; Photovoltaik; Silicium-Photovoltaik; feedstock; Kristallisation und Wafering; Charakterisierung von Prozess- und Silicium-Materialien; Herstellung und Analyse von hocheffizienten Solarzellen; silicon; n-type; contact; solar cell

The transition to seed assisted growth (high-performance multicrystalline silicon) significantly enhanced the quality of multicrystalline silicon. Combining the new growth technique with the inherent benefits of n-type doping results in a multicrystalline material which should be well suited for the fabrication of high-efficiency solar cells. In this work high-efficiency solar cells with passivating rear contact were fabricated on n-type highperformance multicrystalline silicon, crystallized at Fraunhofer ISE. The material features a high diffusion length >800 μm after application of all high temperature process steps needed for cell fabrication. Applying a black-silicon texture at the font resulted in a weighted reflectance of 1%, maintaining a good emitter passivation with J0 ≤ 60 fA/cm2 for a 90 Ω/sq emitter. For the resulting n-type multicrystalline silicon solar cells conversion efficiencies up to 22.3% were reached, representing the current record for multicrystalline silicon solar cells.