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Proceedings Paper

Energy collection efficiency of low concentration holographic planar concentrators
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Paper Abstract

Abstract In this presentation we evaluate the energy collection efficiency and energy yield of different holographic planar concentrator designs. The holographic planar concentrator replaces expensive photovoltaic cell material with holographic collectors that cost approximately 1% of the photovoltaic material. An analysis is performed using a combination of raytracing and coupled wave theory. Other loss factors such as Fresnel reflection and polarization are also incorporated. The performance of single gratings is optimized to maximize the spectral and angular bandwidth that matches the spectral responsivity of different photovoltaic devices. Multiple grating collectors are also modeled to maximize energy collection over the course of a year accommodating the movement of the sun. The results show that approximately half of the light illuminating the hologram can directly be collected by diffraction and directed to the photovoltaic cell. A test system is evaluated and the experimental results compare well with the analysis.

Paper Details

Date Published: 20 August 2010
PDF: 7 pages
Proc. SPIE 7769, High and Low Concentrator Systems for Solar Electric Applications V, 776902 (20 August 2010); doi: 10.1117/12.859713
Show Author Affiliations
Raymond K. Kostuk, The Univ. of Arizona (United States)
Jose Castro, The Univ. of Arizona (United States)
Deming Zhang, The Univ. of Arizona (United States)

Published in SPIE Proceedings Vol. 7769:
High and Low Concentrator Systems for Solar Electric Applications V
Lori E. Greene; Raed A. Sherif, Editor(s)

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