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Light beam induced current of light-induced degradation in high-performance multicrystalline Al-BSF cells.
Karlstad University, Faculty of Health, Science and Technology (starting 2013), Department of Engineering and Physics (from 2013).ORCID iD: 0000-0002-4569-5788
Hanwha Q CELLS GmbH.
Fraunhofer Center for Silicon Photovoltaics CSP.
Fraunhofer Center for Silicon Photovoltaics CSP.
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2017 (English)In: Proceedings of the 7th International Conference on Silicon Photovoltaics, SiliconPV 2017, 3-5 April 2017, Freiburg, Germany / [ed] Ralf Preu, Elsevier, 2017, Vol. 124, p. 99-106Conference paper, Published paper (Refereed)
Abstract [en]

Sponge-LID decreases the Al-BSF cell efficiency by up to 10 %rel. and is only partially recoverable at 200°C. This contributionshows that Sponge-LID occurs at and near most grain boundaries, but only in the centre of the affected cell.  Furthermore,Sponge-LID is not the only type of LID in the silicon bulk. High-resolution Light Beam Induced Current mapping reveals localinternal quantum efficiency losses of up to 8 %rel. at dislocation clusters and small angle grain boundaries, which recover(nearly) fully at 200°C. Nevertheless, this dislocation-related LID appears to reduce the Al-BSF efficiency by less than 1 %rel.

Place, publisher, year, edition, pages
Elsevier, 2017. Vol. 124, p. 99-106
Keywords [en]
solar cell, silicon, quantum efficiency
National Category
Condensed Matter Physics
Research subject
Physics
Identifiers
URN: urn:nbn:se:kau:diva-63996DOI: 10.1016/j.egypro.2017.09.327ISI: 000426791600014OAI: oai:DiVA.org:kau-63996DiVA, id: diva2:1144667
Conference
7th International Conference on Silicon Photovoltaics, SiliconPV 2017, 3-5 April 2017, Freiburg, Germany
Available from: 2017-09-26 Created: 2017-09-26 Last updated: 2019-10-14

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Lindroos, JeanettePacho, PaoloRinio, Markus

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