DocumentCode :
3711680
Title :
Designing and prototyping the polyhedral specular reflector, a spectrum-splitting module with projected >50% efficiency
Author :
Carissa N. Eisler;Cristofer A. Flowers;Pilar Espinet;Sunita Darbe;Emily C. Warmann;John Lloyd;Michelle Dee;Harry A. Atwater
Author_Institution :
California Institute of Technology, Pasadena, 91125, U.S.A.
fYear :
2015
fDate :
6/1/2015 12:00:00 AM
Firstpage :
1
Lastpage :
5
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.
Keywords :
"Optical filters","Optical device fabrication","Optical reflection","Adaptive optics","Photonics","Optical refraction","Optical variables control"
Publisher :
ieee
Conference_Titel :
Photovoltaic Specialist Conference (PVSC), 2015 IEEE 42nd
Type :
conf
DOI :
10.1109/PVSC.2015.7356406
Filename :
7356406
Link To Document :
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