Conceptual comparison between standard Si solar cells and back contacted cells

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dc.identifier.uri http://dx.doi.org/10.15488/931
dc.identifier.uri http://www.repo.uni-hannover.de/handle/123456789/955
dc.contributor.author Ali, Adnan
dc.contributor.author Ohrdes, Tobias
dc.contributor.author Wagner, Hannes
dc.contributor.author Altermatt, Pietro P.
dc.date.accessioned 2016-12-21T14:07:24Z
dc.date.available 2016-12-21T14:07:24Z
dc.date.issued 2014
dc.identifier.citation Ali, A.; Ohrdes, T.; Wagner, H.; Altermatt, P.P.: Conceptual comparison between standard Si solar cells and back contacted cells. In: Energy Procedia 55 (2014), S. 11-16. DOI: https://doi.org/10.1016/j.egypro.2014.08.003
dc.description.abstract It is often stated that one of the main advantages of back-contacted (BC) Si solar cells over standard cells is that shading due to the front-finger metallization is avoided - while it is also often stated that BC cells are prone to "electronic shadowing", which means that the carrier collection efficiency in front of the back-surface-field (BSF) may be reduced. We compare these two cell concepts in two ways: by means of an extensive collection of measured IV data from literature, and by interpreting as well as quantifying the differences with the aid of numerical device simulation. Both literature data and simulations indicate that BC cells have a Jsc-advantage of maximally about 1 mA/cm2, but in Voc and FF there is no clear advantage or disadvantage over standard cells. With a parameter study, we reveal the main design advantages and weaknesses in each cell type. Our numerical device modeling indicates that one of the most crucial design advantages of BC over standard cells is that the collection of minority carriers in the emitter is rather unimportant, which leaves greater flexibility in emitter design than in standard cells. eng
dc.language.iso eng
dc.publisher Amsterdam : Elsevier
dc.relation.ispartof 4th International Conference on Crystalline Silicon Photovoltaics, SiliconPV 2014, 25-27 March 2014
dc.relation.ispartofseries Energy Procedia 55 (2014)
dc.rights CC BY-NC-ND 3.0
dc.rights.uri https://creativecommons.org/licenses/by-nc-nd/3.0/
dc.subject Back surface field eng
dc.subject Cz eng
dc.subject IBC eng
dc.subject Short cirucit current density eng
dc.subject.ddc 600 | Technik ger
dc.subject.ddc 620 | Ingenieurwissenschaften und Maschinenbau ger
dc.subject.ddc 530 | Physik ger
dc.title Conceptual comparison between standard Si solar cells and back contacted cells
dc.type article
dc.type conferenceObject
dc.type Text
dc.relation.issn 18766102
dc.relation.doi https://doi.org/10.1016/j.egypro.2014.08.003
dc.bibliographicCitation.volume 55
dc.bibliographicCitation.firstPage 11
dc.bibliographicCitation.lastPage 16
dc.description.version publishedVersion
tib.accessRights frei zug�nglich


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