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Optics Letters

Optics Letters

| RAPID, SHORT PUBLICATIONS ON THE LATEST IN OPTICAL DISCOVERIES

  • Vol. 36, Iss. 10 — May. 15, 2011
  • pp: 1884–1886

Broadband absorption enhancement in randomly positioned silicon nanowire arrays for solar cell applications

Qing Guo Du, Chan Hin Kam, Hilmi Volkan Demir, Hong Yu Yu, and Xiao Wei Sun  »View Author Affiliations


Optics Letters, Vol. 36, Issue 10, pp. 1884-1886 (2011)
http://dx.doi.org/10.1364/OL.36.001884


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Abstract

In this Letter, the optical properties of randomly positioned silicon nanowire arrays are studied. The result shows that position randomization with a filling ratio larger than 36% renders better absorptance over a broadband ranging from 300 to 1130 nm compared to regular structures. The ultimate efficiency of a 48% filling ratio position randomized nanowire structure is 13.4% higher compared to the optimized regularly arranged nanowire structure with the same thickness. The absorptance enhancement of random structures is attributed to lowered reflectance, more supported resonant modes, and broadening of existing resonance.

© 2011 Optical Society of America

OCIS Codes
(350.6050) Other areas of optics : Solar energy
(310.6628) Thin films : Subwavelength structures, nanostructures

ToC Category:
Thin Films

History
Original Manuscript: January 4, 2011
Revised Manuscript: April 2, 2011
Manuscript Accepted: April 16, 2011
Published: May 13, 2011

Citation
Qing Guo Du, Chan Hin Kam, Hilmi Volkan Demir, Hong Yu Yu, and Xiao Wei Sun, "Broadband absorption enhancement in randomly positioned silicon nanowire arrays for solar cell applications," Opt. Lett. 36, 1884-1886 (2011)
http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-36-10-1884

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