Analysis and optimization of the bulk and rear recombination of screen-printed PERC solar cells

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dc.identifier.uri Gatz, Sebastian Müller, Jens Dullweber, Thorsten Brendel, Rolf 2017-04-21T08:38:42Z 2017-04-21T08:38:42Z 2012
dc.identifier.citation Gatz, S.; Müller, J.; Dullweber, T.; Brendel, R.: Analysis and optimization of the bulk and rear recombination of screen-printed PERC solar cells. In: Energy Procedia 27 (2012), S. 95-102. DOI:
dc.description.abstract In this paper, we investigate the impact of the rear surface passivation, the silicon base material and the local aluminum contacts applied to rear side passivated solar cells with a homogenously doped emitter at the front. We compare different dielectric surface passivation layers (SiO2, Al2O3, SiNx) on a high-efficiency level using 125×125 mm2 and 156×156 mm2 p-type Cz silicon wafers. It turns out that applying an Al2O3/SiN x layer stack outperforms all other surface passivation layers due to its excellent surface passivation as well as optical properties. We determine the impact of the light induced degradation depending on the used Cz base material. We measure an efficiency drop between 0.0 % (Ga-doped) and 0.8 % abs. (B-doped) after 8 hours of illumination under 0.5 Suns. We measure the surface recombination velocity of local screen-printed Al contacts with varying the metallisation fraction frear with the dynamic infrared lifetime mapping technique (dyn-ILM) on lifetime samples. We measure a decrease in contact recombination velocity from above 1100 cm/s for small frear to 400 cm/s for large frear on 1.5 Ωcm p-type FZ-silicon. Microscopy investigations show that this is due to an improved local Al-BSF formation when using higher frear. eng
dc.description.sponsorship German Federal Ministry for the Environment, Nature Conservation and Nuclear Safety/0325296
dc.description.sponsorship Solar Cells BV
dc.description.sponsorship SolarWorld Innovations GmbH
dc.description.sponsorship SCHOTT Solar AG
dc.description.sponsorship RENA GmbH
dc.description.sponsorship SINGULUS TECHNOLOGIES AG
dc.language.iso eng
dc.publisher Amsterdam : Elsevier BV
dc.relation.ispartofseries Energy Procedia 27 (2012)
dc.rights CC BY-NC-ND 3.0 Unported
dc.subject Photovoltaics eng
dc.subject Silicon eng
dc.subject Solar Cells eng
dc.subject Surface Passivation eng
dc.subject.classification Konferenzschrift ger
dc.subject.ddc 333,7 | Natürliche Ressourcen, Energie und Umwelt ger
dc.title Analysis and optimization of the bulk and rear recombination of screen-printed PERC solar cells eng
dc.type article
dc.type Text
dc.relation.issn 1876-6102
dc.bibliographicCitation.volume 27
dc.bibliographicCitation.firstPage 95
dc.bibliographicCitation.lastPage 102
dc.description.version publishedVersion
tib.accessRights frei zug�nglich

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