A Caltech Library Service

Spectrum-splitting photovoltaics: Holographic spectrum splitting in eight-junction, ultra-high efficiency module

Escarra, Matthew D. and Darbe, Sunita and Warmann, Emily C. and Atwater, Harry A. (2013) Spectrum-splitting photovoltaics: Holographic spectrum splitting in eight-junction, ultra-high efficiency module. In: IEEE 39th Photovoltaic Specialists Conference. IEEE , Piscataway, NJ, pp. 1852-1855. ISBN 978-1-4799-3299-3.

Full text is not posted in this repository. Consult Related URLs below.

Use this Persistent URL to link to this item:


To achieve photovoltaic energy conversion with ultra-high module efficiency, the number of junctions can be increased beyond the 3-5 used in conventional lattice-matched multi-junction photovoltaics. We demonstrate a photovoltaic design that incorporates eight III-V semiconductor junctions arranged laterally as four dual-junction subcells operating electrically and optically in an independent manner. An integrated holographic optical element is used to split the incoming solar spectrum into four different spectral bands, each diffracted onto the appropriate subcell. In addition, two-axis concentration is used to achieve total concentration of 672 suns. A preliminary design for this holographic spectrum splitter composed of twelve simple, commercially available holograms predicts an achievable 76.1% optical efficiency and 37.1% two-terminal module efficiency; opportunities for improved efficiency are discussed.

Item Type:Book Section
Related URLs:
URLURL TypeDescription DOIArticle
Escarra, Matthew D.0000-0002-0232-942X
Darbe, Sunita0000-0002-8099-1814
Warmann, Emily C.0000-0002-2810-4608
Atwater, Harry A.0000-0001-9435-0201
Additional Information:© 2013 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. This project was also supported by the Dow Chemical Company and the DOE ‘Light-Material Interactions in Energy Conversion’ Energy Frontier Research Center under grant DE-SC0001293.
Funding AgencyGrant Number
Advanced Research Projects Agency-Energy (ARPA-E)UNSPECIFIED
Department of Energy (DOE)DE-AR0000333
Dow Chemical CompanyUNSPECIFIED
Department of Energy (DOE)DE-SC0001293
Subject Keywords:holographic optical components, optical design, photonics, photovoltaic systems, solar energy, spectral shape, III-V semiconductor materials
Record Number:CaltechAUTHORS:20140918-105606046
Persistent URL:
Official Citation:Escarra, M.D.; Darbe, S.; Warmann, E.C.; Atwater, H.A, "Spectrum-splitting photovoltaics: Holographic spectrum splitting in eight-junction, ultra-high efficiency module," Photovoltaic Specialists Conference (PVSC), 2013 IEEE 39th , vol., no., pp.1852,1855, 16-21 June 2013 doi: 10.1109/PVSC.2013.6744503 URL:
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:49820
Deposited By: Tony Diaz
Deposited On:18 Sep 2014 22:20
Last Modified:10 Nov 2021 18:48

Repository Staff Only: item control page