Share Email Print
cover

Proceedings Paper

Angular restriction of photon emission for ultra-efficient photovoltaics
Author(s): Avi Braun; Eugene A. Katz; Daniel Feuermann; Brendan M. Kayes; Jeffrey M. Gordon
Format Member Price Non-Member Price
PDF $14.40 $18.00

Paper Abstract

We present experimental evidence for improving the open-circuit voltage – and thereby efficiency - of photovoltaics via the external recycling of photon emission. This strategy is equivalent to limiting the angular extent of photon emission - effective only in photovoltaics with high external luminescent efficiency. This is why the effect has not been observed in current solar cell technologies. It is attainable with the latest generation of ultra-efficient single-junction non-concentrator thin-film GaAs cells. The findings are explained in terms of basic photovoltaic thermodynamics.

Paper Details

Date Published: 18 September 2013
PDF: 8 pages
Proc. SPIE 8834, Nonimaging Optics: Efficient Design for Illumination and Solar Concentration X, 883407 (18 September 2013); doi: 10.1117/12.2022578
Show Author Affiliations
Avi Braun, Ben-Gurion Univ. of the Negev (Israel)
Eugene A. Katz, Ben-Gurion Univ. of the Negev (Israel)
Daniel Feuermann, Ben-Gurion Univ. of the Negev (Israel)
Brendan M. Kayes, Alta Devices, Inc. (United States)
Jeffrey M. Gordon, Ben-Gurion Univ. of the Negev (Israel)


Published in SPIE Proceedings Vol. 8834:
Nonimaging Optics: Efficient Design for Illumination and Solar Concentration X
Roland Winston; Jeffrey Gordon, Editor(s)

© SPIE. Terms of Use
Back to Top