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Electrically independent subcircuits for a seven-junction spectrum splitting photovoltaic module

Flowers, Cristofer A. and Eisler, Carissa N. and Atwater, Harry A. (2014) Electrically independent subcircuits for a seven-junction spectrum splitting photovoltaic module. In: IEEE 40th Photovoltaic Specialist Conference (PVSC). IEEE , Piscataway, NJ, pp. 1339-1343. ISBN 978-1-4799-4398-2.

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An electrical system that facilitates independent electrical connection of subcells with different bandgaps is required in order to optimally extract two-terminal power generated by spectrum-splitting photovoltaics. We have designed such a system for a seven subcell spectrum-splitting module using commercially available electrical components. Modified detailed balance modeling of the subcells coupled with HSPICE circuit simulation results in 87.5% power-weighted average subcell-to-grid electrical efficiency. Additional analysis indicates electrical efficiencies in excess of 95% are possible with custom power conditioning components and appropriately designed contacts.

Item Type:Book Section
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URLURL TypeDescription
Flowers, Cristofer A.0000-0001-7864-3629
Eisler, Carissa N.0000-0002-5755-5280
Atwater, Harry A.0000-0001-9435-0201
Additional Information:© 2014 IEEE. The information, data, or work presented herein was funded in part by the Advanced Research Projects Agency-Energy (ARPA-E), U.S. Department of Energy, under Award Number DE-AR0000333 and by the Dow Chemical Company. C. A. Flowers was supported by the by the National Science Foundation (NSF) through the NSF Graduate Research Fellowship Program (NSFGRFP). C. N. Eisler was supported by the Department of Defense (DoD) through the National Defense Science & Engineering Graduate Fellowship (NDSEG) Program. The authors especially wish to thank Emily Warmann for helpful discussion and detailed balance code, as well as the Full Spectrum Photovoltaics team for useful insight, discussion, and ongoing support.
Funding AgencyGrant Number
Advanced Research Projects Agency-Energy (ARPA-E)UNSPECIFIED
Department of Energy (DOE)DE-AR0000333
Dow Chemical CompanyUNSPECIFIED
NSF Graduate Research FellowshipUNSPECIFIED
National Defense Science and Engineering Graduate (NDSEG) FellowshipUNSPECIFIED
Subject Keywords:independent electrical connection, power conversion, spectrum splitting, module electrical design
Record Number:CaltechAUTHORS:20170118-173032449
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Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:73540
Deposited On:19 Jan 2017 19:53
Last Modified:11 Nov 2021 05:18

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