Simple processing of back-contacted silicon heterojunction solar cells using selective-area crystalline growth

Handle URI:
http://hdl.handle.net/10754/623314
Title:
Simple processing of back-contacted silicon heterojunction solar cells using selective-area crystalline growth
Authors:
Tomasi, Andrea; Paviet-Salomon, Bertrand; Jeangros, Quentin; Haschke, Jan; Christmann, Gabriel; Barraud, Loris; Descoeudres, Antoine; Seif, Johannes Peter; Nicolay, Sylvain; Despeisse, Matthieu; De Wolf, Stefaan ( 0000-0003-1619-9061 ) ; Ballif, Christophe
Abstract:
For crystalline-silicon solar cells, voltages close to the theoretical limit are nowadays readily achievable when using passivating contacts. Conversely, maximal current generation requires the integration of the electron and hole contacts at the back of the solar cell to liberate its front from any shadowing loss. Recently, the world-record efficiency for crystalline-silicon single-junction solar cells was achieved by merging these two approaches in a single device; however, the complexity of fabricating this class of devices raises concerns about their commercial potential. Here we show a contacting method that substantially simplifies the architecture and fabrication of back-contacted silicon solar cells. We exploit the surface-dependent growth of silicon thin films, deposited by plasma processes, to eliminate the patterning of one of the doped carrier-collecting layers. Then, using only one alignment step for electrode definition, we fabricate a proof-of-concept 9-cm2 tunnel-interdigitated back-contact solar cell with a certified conversion efficiency >22.5%.
KAUST Department:
KAUST Solar Center (KSC)
Citation:
Tomasi A, Paviet-Salomon B, Jeangros Q, Haschke J, Christmann G, et al. (2017) Simple processing of back-contacted silicon heterojunction solar cells using selective-area crystalline growth. Nature Energy 2: 17062. Available: http://dx.doi.org/10.1038/nenergy.2017.62.
Publisher:
Springer Nature
Journal:
Nature Energy
Issue Date:
24-Apr-2017
DOI:
10.1038/nenergy.2017.62
Type:
Article
ISSN:
2058-7546
Sponsors:
This work was supported by the Swiss Commission for Technology and Innovation (CTI) by the Swiss Federal Office for Energy (SFOE), and by the Fonds National Suisse Reequip Program. The authors thank Meyer Burger Research for scientific partnership and financial support; D. Lachenal and B. Strahm for support and collaboration in back-contacted silicon heterojunction solar-cell development; J. Hermans and Meyer Burger B.V. for the support in inkjet printing; M. Pickrell and SunChemicals for supplying the hot melt; the Academic Writing Services at KAUST for text editing; M. J. Lehmann, N. Badel and H. Watanabe at EPFL and CSEM for their support in back-end processing; and A. Hessler at EPFL and CIME for the TEM observations.
Additional Links:
https://www.nature.com/articles/nenergy201762
Appears in Collections:
Articles; Solar and Photovoltaic Engineering Research Center (SPERC)

Full metadata record

DC FieldValue Language
dc.contributor.authorTomasi, Andreaen
dc.contributor.authorPaviet-Salomon, Bertranden
dc.contributor.authorJeangros, Quentinen
dc.contributor.authorHaschke, Janen
dc.contributor.authorChristmann, Gabrielen
dc.contributor.authorBarraud, Lorisen
dc.contributor.authorDescoeudres, Antoineen
dc.contributor.authorSeif, Johannes Peteren
dc.contributor.authorNicolay, Sylvainen
dc.contributor.authorDespeisse, Matthieuen
dc.contributor.authorDe Wolf, Stefaanen
dc.contributor.authorBallif, Christopheen
dc.date.accessioned2017-05-02T13:22:29Z-
dc.date.available2017-05-02T13:22:29Z-
dc.date.issued2017-04-24en
dc.identifier.citationTomasi A, Paviet-Salomon B, Jeangros Q, Haschke J, Christmann G, et al. (2017) Simple processing of back-contacted silicon heterojunction solar cells using selective-area crystalline growth. Nature Energy 2: 17062. Available: http://dx.doi.org/10.1038/nenergy.2017.62.en
dc.identifier.issn2058-7546en
dc.identifier.doi10.1038/nenergy.2017.62en
dc.identifier.urihttp://hdl.handle.net/10754/623314-
dc.description.abstractFor crystalline-silicon solar cells, voltages close to the theoretical limit are nowadays readily achievable when using passivating contacts. Conversely, maximal current generation requires the integration of the electron and hole contacts at the back of the solar cell to liberate its front from any shadowing loss. Recently, the world-record efficiency for crystalline-silicon single-junction solar cells was achieved by merging these two approaches in a single device; however, the complexity of fabricating this class of devices raises concerns about their commercial potential. Here we show a contacting method that substantially simplifies the architecture and fabrication of back-contacted silicon solar cells. We exploit the surface-dependent growth of silicon thin films, deposited by plasma processes, to eliminate the patterning of one of the doped carrier-collecting layers. Then, using only one alignment step for electrode definition, we fabricate a proof-of-concept 9-cm2 tunnel-interdigitated back-contact solar cell with a certified conversion efficiency >22.5%.en
dc.description.sponsorshipThis work was supported by the Swiss Commission for Technology and Innovation (CTI) by the Swiss Federal Office for Energy (SFOE), and by the Fonds National Suisse Reequip Program. The authors thank Meyer Burger Research for scientific partnership and financial support; D. Lachenal and B. Strahm for support and collaboration in back-contacted silicon heterojunction solar-cell development; J. Hermans and Meyer Burger B.V. for the support in inkjet printing; M. Pickrell and SunChemicals for supplying the hot melt; the Academic Writing Services at KAUST for text editing; M. J. Lehmann, N. Badel and H. Watanabe at EPFL and CSEM for their support in back-end processing; and A. Hessler at EPFL and CIME for the TEM observations.en
dc.publisherSpringer Natureen
dc.relation.urlhttps://www.nature.com/articles/nenergy201762en
dc.rightsThe final publication is available at Springer via http://dx.doi.org/10.1038/nenergy.2017.62en
dc.titleSimple processing of back-contacted silicon heterojunction solar cells using selective-area crystalline growthen
dc.typeArticleen
dc.contributor.departmentKAUST Solar Center (KSC)en
dc.identifier.journalNature Energyen
dc.eprint.versionPost-printen
dc.contributor.institutionÉcole Polytechnique Fédérale de Lausanne (EPFL), Institute of Microengineering (IMT), Photovoltaics and Thin Film Electronics Laboratory, Rue de la Maladière 71b, CH-2000 Neuchâtel, Switzerlanden
dc.contributor.institutionCentre Suisse d’Électronique et de Microtechnique (CSEM), PV-Center, Rue Jaquet-Droz 1, CH-2002 Neuchâtel, Switzerlanden
dc.contributor.institutionUniversity of Basel, Department of Physics, Klingelbergstrasse 82, CH-4056 Basel, Switzerlanden
kaust.authorDe Wolf, Stefaanen
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