Impact of Ag Pads on the Series Resistance of PERC Solar Cells

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dc.identifier.uri http://dx.doi.org/10.15488/1198
dc.identifier.uri http://www.repo.uni-hannover.de/handle/123456789/1222
dc.contributor.author Schulte-Huxel, Henning
dc.contributor.author Witteck, Robert
dc.contributor.author van Laak, Paula
dc.contributor.author Brendemühl, Till
dc.contributor.author Hinken, David
dc.contributor.author Bothe, Karsten
dc.contributor.author Brendel, Rolf
dc.date.accessioned 2017-03-17T10:51:52Z
dc.date.available 2017-03-17T10:51:52Z
dc.date.issued 2016
dc.identifier.citation Schulte-Huxel, H.; Witteck, R.; van Laak, P.; Brendemühl, T.; Hinken, D.; Bothe, K.; Brendel, R.: Impact of Ag Pads on the Series Resistance of PERC Solar Cells. In: Energy Procedia 92 (2016), S. 743-749. DOI: https://doi.org/10.1016/j.egypro.2016.07.053
dc.description.abstract Screen-printed passivated emitter and rear cells (PERC) require Ag pads on the rear side to enable solderable connections for module integration. These Ag pads are separated from the silicon by a dielectric layer to avoid recombination of minority charge carriers. The drawback of this configuration is an elongated transport path for the majority charge carriers generated above the pads. This results in an increase in series resistance. The strength of this effect depends on charge carrier generation above the Ag pads that critically depends on shading of the cell's front side. Ag pads are usually wider than the busbars or the interconnector ribbons and thus are only partially shaded. We build PERC test structures with various rear side configurations of Ag and Al screen printing as well as with and without laser contact openings (LCO). Using experiments and finite element simulations we investigate the impact of shading the Ag pads by the busbars and other means. While fully shaded regions do not increase the lumped solar cell's series resistance, unshaded Ag pads lead to an increase of about 37%. eng
dc.description.sponsorship German Federal Ministry for Economic Affairs and Energy/0325641
dc.language.iso eng
dc.publisher London : Elsevier Ltd.
dc.relation.ispartofseries Energy Procedia 92 (2016)
dc.rights CC BY-NC-ND 4.0
dc.rights.uri https://creativecommons.org/licenses/by-nc-nd/4.0/
dc.subject laser fiered contacts eng
dc.subject laser welding eng
dc.subject module interconnection eng
dc.subject PERC solar cells eng
dc.subject Busbars eng
dc.subject Charge carriers eng
dc.subject Crystalline materials eng
dc.subject Electric resistance eng
dc.subject Finite element method eng
dc.subject Laser beam welding eng
dc.subject Screen printing eng
dc.subject Silicon eng
dc.subject Solar cells eng
dc.subject Charge carrier generation eng
dc.subject Dielectric layer eng
dc.subject Finite element simulations eng
dc.subject Majority charge carriers eng
dc.subject Module integration eng
dc.subject module interconnection eng
dc.subject PERC solar cells eng
dc.subject Series resistances eng
dc.subject Silver eng
dc.subject.ddc 530 | Physik ger
dc.title Impact of Ag Pads on the Series Resistance of PERC Solar Cells
dc.type Text
dc.type article
dc.type conferenceObject
dc.relation.issn 1876-6102
dc.relation.doi https://doi.org/10.1016/j.egypro.2016.07.053
dc.bibliographicCitation.volume 92
dc.bibliographicCitation.firstPage 743
dc.bibliographicCitation.lastPage 749
tib.accessRights frei zug�nglich


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