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Energy Express

Energy Express

  • Editor: Christian Seassal
  • Vol. 22, Iss. S4 — Jun. 30, 2014
  • pp: A1197–A1202

Parasitic loss suppression in photonic and plasmonic photovoltaic light trapping structures

Yi Zou, Xing Sheng, Kun Xia, Huayu Fu, and Juejun Hu  »View Author Affiliations


Optics Express, Vol. 22, Issue S4, pp. A1197-A1202 (2014)
http://dx.doi.org/10.1364/OE.22.0A1197


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Abstract

In this paper, we examine the optical loss mechanisms and mitigation strategies in classical photovoltaic light trapping structures consisting of diffractive gratings integrated with a backside reflector, which couple normal incident solar radiation into guided modes in solar cells to enhance optical absorption. Parasitic absorption from metal or dielectric backside reflectors is identified to be a major loss contributor in such light trapping structures. We elucidate the optical loss mechanism based on the classical coupled mode theory. Further, a spacer design is proposed and validated through numerical simulations to significantly suppress the parasitic loss and improve solar cell performance.

© 2014 Optical Society of America

OCIS Codes
(160.3900) Materials : Metals
(230.1480) Optical devices : Bragg reflectors
(230.1950) Optical devices : Diffraction gratings
(240.6680) Optics at surfaces : Surface plasmons
(350.6050) Other areas of optics : Solar energy

ToC Category:
Light Trapping for Photovoltaics

History
Original Manuscript: May 6, 2014
Revised Manuscript: June 6, 2014
Manuscript Accepted: June 9, 2014
Published: June 27, 2014

Citation
Yi Zou, Xing Sheng, Kun Xia, Huayu Fu, and Juejun Hu, "Parasitic loss suppression in photonic and plasmonic photovoltaic light trapping structures," Opt. Express 22, A1197-A1202 (2014)
http://www.opticsinfobase.org/oe/abstract.cfm?URI=oe-22-S4-A1197


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