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dc.contributor.authorChrysler, Benjamin D.
dc.contributor.authorWu, Yuechen
dc.contributor.authorKostuk, Raymond K.
dc.contributor.authorYu, Zhengshan
dc.date.accessioned2018-04-02T16:58:01Z
dc.date.available2018-04-02T16:58:01Z
dc.date.issued2017-08-25
dc.identifier.citationBenjamin D. Chrysler, Yuechen Wu, Zhengshan Yu, Raymond K. Kostuk, "Volume holographic lens spectrum-splitting photovoltaic system for high energy yield with direct and diffuse solar illumination", Proc. SPIE 10368, Next Generation Technologies for Solar Energy Conversion VIII, 103680G (25 August 2017); doi: 10.1117/12.2273204; https://doi.org/10.1117/12.2273204en
dc.identifier.issn0277-786X
dc.identifier.issn1996-756X
dc.identifier.doi10.1117/12.2273204
dc.identifier.urihttp://hdl.handle.net/10150/627188
dc.description.abstractIn this paper a prototype spectrum-splitting photovoltaic system based on volume holographic lenses (VHL) is designed, fabricated and tested. In spectrum-splitting systems, incident sunlight is divided in spectral bands for optimal conversion by a set of single-junction PV cells that are laterally separated. The VHL spectrum-splitting system in this paper has a form factor similar to conventional silicon PV modules but with higher efficiencies (>30%). Unlike many other spectrum-splitting systems that have been proposed in the past, the system in this work converts both direct and diffuse sunlight while using inexpensive 1-axis tracking systems. The VHL system uses holographic lenses that focus light at a transition wavelength to the boundary between two PV cells. Longer wavelength light is dispersed to the narrow bandgap cell and shorter wavelength light to the wide bandgap cell. A prototype system is designed with silicon and GaAs PV cells. The holographic lenses are fabricated in Covestro Bayfol HX photopolymer by 'stitching' together lens segments through sequential masked exposures. The PV cells and holographic lenses were characterized and the data was used in a raytrace simulation and predicts an improvement in total power output of 15.2% compared to a non-spectrum-splitting reference. A laboratory measurement yielded an improvement in power output of 8.5%.
dc.description.sponsorshipNSF/DOE ERC [EEC-1041895]; NSF [ECCS-1405619]; State of Arizona TRIF/WEES [5835204]; National Science Foundation Graduate Research Fellowship Program [DGE-1143953]en
dc.language.isoenen
dc.publisherSPIE-INT SOC OPTICAL ENGINEERINGen
dc.relation.urlhttps://www.spiedigitallibrary.org/conference-proceedings-of-spie/10368/2273204/Volume-holographic-lens-spectrum-splitting-photovoltaic-system-for-high-energy/10.1117/12.2273204.fullen
dc.rights© (2017) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE).en
dc.subjectspectrum splittingen
dc.subjectholographic optical elementsen
dc.subjectphotovoltaicsen
dc.subjectCovestro Bayfol HXen
dc.subjectdiffuse sunlighten
dc.subjecthigh efficiencyen
dc.titleVolume holographic lens spectrum-splitting photovoltaic system for high energy yield with direct and diffuse solar illuminationen
dc.typeArticleen
dc.contributor.departmentUniv Arizona, Elect & Comp Engn Depten
dc.contributor.departmentUniv Arizona, Coll Opt Scien
dc.identifier.journalNEXT GENERATION TECHNOLOGIES FOR SOLAR ENERGY CONVERSION VIIIen
dc.description.collectioninformationThis item from the UA Faculty Publications collection is made available by the University of Arizona with support from the University of Arizona Libraries. If you have questions, please contact us at repository@u.library.arizona.edu.en
dc.eprint.versionFinal published versionen
refterms.dateFOA2018-05-27T16:44:38Z
html.description.abstractIn this paper a prototype spectrum-splitting photovoltaic system based on volume holographic lenses (VHL) is designed, fabricated and tested. In spectrum-splitting systems, incident sunlight is divided in spectral bands for optimal conversion by a set of single-junction PV cells that are laterally separated. The VHL spectrum-splitting system in this paper has a form factor similar to conventional silicon PV modules but with higher efficiencies (>30%). Unlike many other spectrum-splitting systems that have been proposed in the past, the system in this work converts both direct and diffuse sunlight while using inexpensive 1-axis tracking systems. The VHL system uses holographic lenses that focus light at a transition wavelength to the boundary between two PV cells. Longer wavelength light is dispersed to the narrow bandgap cell and shorter wavelength light to the wide bandgap cell. A prototype system is designed with silicon and GaAs PV cells. The holographic lenses are fabricated in Covestro Bayfol HX photopolymer by 'stitching' together lens segments through sequential masked exposures. The PV cells and holographic lenses were characterized and the data was used in a raytrace simulation and predicts an improvement in total power output of 15.2% compared to a non-spectrum-splitting reference. A laboratory measurement yielded an improvement in power output of 8.5%.


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