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Light Trapping in Bifacial Solar Modules Using Effectively Transparent Contacts (ETCs)

Saive, Rebecca and Russell, Thomas C. R. and Atwater, Harry A. (2018) Light Trapping in Bifacial Solar Modules Using Effectively Transparent Contacts (ETCs). In: 2018 IEEE 7th World Conference on Photovoltaic Energy Conversion (WCPEC) (A Joint Conference of 45th IEEE PVSC, 28th PVSEC & 34th EU PVSEC). IEEE , Piscataway, NJ, pp. 45-48. ISBN 9781538685297. https://resolver.caltech.edu/CaltechAUTHORS:20181210-140401678

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Abstract

We have performed a computational study on the enhancement of the light absorption within bifacial solar modules with effectively transparent contacts (ETCs). ETCs are triangular cross-section silver fingers that redirect light to the active area of the solar cell and therefore, mitigate finger grid shading losses. Furthermore, ETCs can be spaced densely leading to light trapping. We used a combination of thin film and ray optical simulations and determined that light absorption can be increased by more than 4.5% compared to state-of-the-art metallization due to light trapping and effective transparency. Furthermore, we calculated that grid resistance and silver usage can be improved when using ETCs.


Item Type:Book Section
Related URLs:
URLURL TypeDescription
https://doi.org/10.1109/pvsc.2018.8547314DOIArticle
ORCID:
AuthorORCID
Saive, Rebecca0000-0001-7420-9155
Atwater, Harry A.0000-0001-9435-0201
Additional Information:© 2018 IEEE. The authors thank John Lloyd for helpful advice on LightTools optical simulations and Phil Jahelka for helpful discussion. This material is based upon work supported by the Engineering Research Center Program of the National Science Foundation and the Office of Energy Efficiency and Renewable Energy of the Department of Energy under NSF Cooperative Agreement No. EEC-1041895 and by the U.S. Department of Energy through the Bay Area Photovoltaic Consortium under Award Number DE-EE0004946. RS acknowledges support from the Global Climate & Energy project.
Funders:
Funding AgencyGrant Number
NSFEEC-1041895
Department of Energy (DOE)DE-EE0004946
Global Climate and Energy Project (GCEP)UNSPECIFIED
Subject Keywords:Bifacial solar cells, light trapping, photovoltaic cells, effectively transparent contacts
Record Number:CaltechAUTHORS:20181210-140401678
Persistent URL:https://resolver.caltech.edu/CaltechAUTHORS:20181210-140401678
Official Citation:R. Saive, T. C. R. Russell and H. A. Atwater, "Light Trapping in Bifacial Solar Modules Using Effectively Transparent Contacts (ETCs)," 2018 IEEE 7th World Conference on Photovoltaic Energy Conversion (WCPEC) (A Joint Conference of 45th IEEE PVSC, 28th PVSEC & 34th EU PVSEC), Waikoloa Village, HI, USA, 2018, pp. 0045-0048. doi: 10.1109/PVSC.2018.8547314
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:91653
Collection:CaltechAUTHORS
Deposited By: George Porter
Deposited On:10 Dec 2018 23:16
Last Modified:03 Oct 2019 20:37

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