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Designing and prototyping the polyhedral specular reflector, a spectrum-splitting module with projected >50% efficiency

Eisler, Carissa N. and Flowers, Cristofer A. and Espinet, Pilar and Darbe, Sunita and Warmann, Emily C. and Lloyd, John and Dee, Michelle and Atwater, Harry A. (2015) Designing and prototyping the polyhedral specular reflector, a spectrum-splitting module with projected >50% efficiency. In: IEEE 42nd Photovoltaic Specialist Conference (PVSC). IEEE , Piscataway, NJ, pp. 1-4. https://resolver.caltech.edu/CaltechAUTHORS:20151224-080624314

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Abstract

We investigate a spectrum-splitting design, the polyhedral specular reflector, for an ultra-high efficiency module (>50%). The design employs a series of multilayer dielectric stack filters to divide the incident spectrum onto seven independently connected subcells. We optimized the geometry and components of the design through coupled wave-optics, device physics, electrical circuit, and ray tracing models. We show a wide design space where >50% module efficiencies are possible and have chosen a design with a projected 50.8% module efficiency to prototype. Initial efforts show excellent matching of the fabricated optical splitting prism (90.1% splitting efficiency) to the theoretical design (93% splitting efficiency). Additionally, integrating fabricated concentrators yields an optical structure consistent with a 30% efficiency module.


Item Type:Book Section
Related URLs:
URLURL TypeDescription
http://dx.doi.org/10.1109/PVSC.2015.7356406 DOIArticle
ORCID:
AuthorORCID
Eisler, Carissa N.0000-0002-5755-5280
Flowers, Cristofer A.0000-0001-7864-3629
Espinet, Pilar0000-0002-7656-0077
Darbe, Sunita0000-0002-8099-1814
Warmann, Emily C.0000-0002-2810-4608
Atwater, Harry A.0000-0001-9435-0201
Additional Information:© 2015 IEEE.
Record Number:CaltechAUTHORS:20151224-080624314
Persistent URL:https://resolver.caltech.edu/CaltechAUTHORS:20151224-080624314
Official Citation:Eisler, Carissa N.; Flowers, Cristofer A.; Espinet, Pilar; Darbe, Sunita; Warmann, Emily C.; Lloyd, John; Dee, Michelle; Atwater, Harry A., "Designing and prototyping the polyhedral specular reflector, a spectrum-splitting module with projected >50% efficiency," in Photovoltaic Specialist Conference (PVSC), 2015 IEEE 42nd , vol., no., pp.1-5, 14-19 June 2015 doi: 10.1109/PVSC.2015.7356406
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:63212
Collection:CaltechAUTHORS
Deposited By: Tony Diaz
Deposited On:24 Dec 2015 17:27
Last Modified:26 Nov 2019 19:26

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