Optical Evaluation of the Rear Contacts of Crystalline Silicon Solar Cells by Coupled Electromagnetic and Statistical Ray-Optics Modeling

Handle URI:
http://hdl.handle.net/10754/623055
Title:
Optical Evaluation of the Rear Contacts of Crystalline Silicon Solar Cells by Coupled Electromagnetic and Statistical Ray-Optics Modeling
Authors:
Dabirian, Ali; Morales-Masis, Monica; Haug, Franz-Josef; De Wolf, Stefaan ( 0000-0003-1619-9061 ) ; Ballif, Christophe
Abstract:
High-efficiency crystalline silicon (c-Si) solar cells increasingly feature sophisticated electron and hole contacts aimed at minimizing electronic losses. At the rear of photovoltaic devices, such contacts—usually consisting of stacks of functional layers—offer opportunities to enhance the infrared response of the solar cells. Here, we propose an accurate and simple modeling procedure to evaluate the infrared performance of rear contacts in c-Si solar cells. Our method combines full-wave electromagnetic modeling of the rear contact with a statistical ray optics model to obtain the fraction of optical energy dissipated from the rear contact relative to that absorbed by the Si wafer. Using this technique, we study the impact of the refractive index, extinction coefficient, and thickness of the rear-passivating layer and establish basic design rules. In addition, we evaluate novel optical structures, including stratified thin films, nanoparticle composites, and conductive nanowires embedded in a low-index dielectric matrix, for integration into advanced rear contacts in c-Si photovoltaic devices. From an optical perspective, nanowire structures preserving low contact resistance appear to be the most effective approach to mitigating dissipation losses from the rear contact.
KAUST Department:
KAUST Solar Center, King Abdullah University of Science and Technology, Thuwal 23955-6900, Saudi Arabia
Citation:
Dabirian A, Morales-Masis M, Haug F-J, De Wolf S, Ballif C (2017) Optical Evaluation of the Rear Contacts of Crystalline Silicon Solar Cells by Coupled Electromagnetic and Statistical Ray-Optics Modeling. IEEE Journal of Photovoltaics: 1–10. Available: http://dx.doi.org/10.1109/JPHOTOV.2017.2663658.
Publisher:
Institute of Electrical and Electronics Engineers (IEEE)
Journal:
IEEE Journal of Photovoltaics
Issue Date:
15-Feb-2017
DOI:
10.1109/JPHOTOV.2017.2663658
Type:
Article
ISSN:
2156-3381; 2156-3403
Sponsors:
This work was supported in part by the European Commission (FP7 project HERCULES under Grant 608498 and CHEETAH project under Grant 609788), in part by CCEM through Connect PV project, in part by the Swiss Federal Office for Energy, in part by the U.S. Department of Energy under the FPaceII project, and in part by the King Abdullah University of Science and Technology.
Additional Links:
http://ieeexplore.ieee.org/document/7856966/
Appears in Collections:
Articles

Full metadata record

DC FieldValue Language
dc.contributor.authorDabirian, Alien
dc.contributor.authorMorales-Masis, Monicaen
dc.contributor.authorHaug, Franz-Josefen
dc.contributor.authorDe Wolf, Stefaanen
dc.contributor.authorBallif, Christopheen
dc.date.accessioned2017-03-21T10:11:18Z-
dc.date.available2017-03-21T10:11:18Z-
dc.date.issued2017-02-15en
dc.identifier.citationDabirian A, Morales-Masis M, Haug F-J, De Wolf S, Ballif C (2017) Optical Evaluation of the Rear Contacts of Crystalline Silicon Solar Cells by Coupled Electromagnetic and Statistical Ray-Optics Modeling. IEEE Journal of Photovoltaics: 1–10. Available: http://dx.doi.org/10.1109/JPHOTOV.2017.2663658.en
dc.identifier.issn2156-3381en
dc.identifier.issn2156-3403en
dc.identifier.doi10.1109/JPHOTOV.2017.2663658en
dc.identifier.urihttp://hdl.handle.net/10754/623055-
dc.description.abstractHigh-efficiency crystalline silicon (c-Si) solar cells increasingly feature sophisticated electron and hole contacts aimed at minimizing electronic losses. At the rear of photovoltaic devices, such contacts—usually consisting of stacks of functional layers—offer opportunities to enhance the infrared response of the solar cells. Here, we propose an accurate and simple modeling procedure to evaluate the infrared performance of rear contacts in c-Si solar cells. Our method combines full-wave electromagnetic modeling of the rear contact with a statistical ray optics model to obtain the fraction of optical energy dissipated from the rear contact relative to that absorbed by the Si wafer. Using this technique, we study the impact of the refractive index, extinction coefficient, and thickness of the rear-passivating layer and establish basic design rules. In addition, we evaluate novel optical structures, including stratified thin films, nanoparticle composites, and conductive nanowires embedded in a low-index dielectric matrix, for integration into advanced rear contacts in c-Si photovoltaic devices. From an optical perspective, nanowire structures preserving low contact resistance appear to be the most effective approach to mitigating dissipation losses from the rear contact.en
dc.description.sponsorshipThis work was supported in part by the European Commission (FP7 project HERCULES under Grant 608498 and CHEETAH project under Grant 609788), in part by CCEM through Connect PV project, in part by the Swiss Federal Office for Energy, in part by the U.S. Department of Energy under the FPaceII project, and in part by the King Abdullah University of Science and Technology.en
dc.publisherInstitute of Electrical and Electronics Engineers (IEEE)en
dc.relation.urlhttp://ieeexplore.ieee.org/document/7856966/en
dc.rights(c) 2017 IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other uses, including reprinting/ republishing this material for advertising or promotional purposes, creating new collective works for resale or redistribution to servers or lists, or reuse of any copyrighted components of this work in other works.en
dc.subjectsilicon heterojunction (SHJ) solar cellen
dc.subjectCrystalline Si photovoltaicsen
dc.subjectelectromagnetic modelingen
dc.subjectnanostructuresen
dc.subjectpassivated emitter and rear cell (PERC)en
dc.subjectphysical opticsen
dc.titleOptical Evaluation of the Rear Contacts of Crystalline Silicon Solar Cells by Coupled Electromagnetic and Statistical Ray-Optics Modelingen
dc.typeArticleen
dc.contributor.departmentKAUST Solar Center, King Abdullah University of Science and Technology, Thuwal 23955-6900, Saudi Arabiaen
dc.identifier.journalIEEE Journal of Photovoltaicsen
dc.eprint.versionPost-printen
dc.contributor.institutionPhotovoltaics and Thin-Film Electronics Laboratory, Institute of Microengineering, Ecole Polytechnique Federale de Lausanne, Neuchatel 2002, Switzerlanden
dc.contributor.institutionSchool of Physics, Institute for Research in Fundamental Sciences, Tehran 19395-5531, Iranen
kaust.authorDe Wolf, Stefaanen
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