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Energy Express

Energy Express

  • Editor: Christian Seassal
  • Vol. 21, Iss. S1 — Jan. 14, 2013
  • pp: A167–A172

A high efficiency dual-junction solar cell implemented as a nanowire array

Shuqing Yu and Bernd Witzigmann  »View Author Affiliations


Optics Express, Vol. 21, Issue S1, pp. A167-A172 (2013)
http://dx.doi.org/10.1364/OE.21.00A167


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Abstract

In this work, we present an innovative design of a dual-junction nanowire array solar cell. Using a dual-diameter nanowire structure, the solar spectrum is separated and absorbed in the core wire and the shell wire with respect to the wavelength. This solar cell provides high optical absorptivity over the entire spectrum due to an electromagnetic concentration effect. Microscopic simulations were performed in a three-dimensional setup, and the optical properties of the structure were evaluated by solving Maxwell’s equations. The Shockley-Queisser method was employed to calculate the current-voltage relationship of the dual-junction structure. Proper design of the geometrical and material parameters leads to an efficiency of 39.1%.

© 2012 OSA

OCIS Codes
(130.5990) Integrated optics : Semiconductors
(350.6050) Other areas of optics : Solar energy
(350.4238) Other areas of optics : Nanophotonics and photonic crystals

ToC Category:
Photovoltaics

History
Original Manuscript: September 14, 2012
Revised Manuscript: November 4, 2012
Manuscript Accepted: November 5, 2012
Published: December 20, 2012

Citation
Shuqing Yu and Bernd Witzigmann, "A high efficiency dual-junction solar cell implemented as a nanowire array," Opt. Express 21, A167-A172 (2013)
http://www.opticsinfobase.org/oe/abstract.cfm?URI=oe-21-S1-A167


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