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Energy Express

Energy Express

  • Editor: Bernard Kippelen
  • Vol. 20, Iss. S3 — May. 7, 2012
  • pp: A418–A430

Plasmonic-photonic arrays with aperiodic spiral order for ultra-thin film solar cells

Jacob Trevino, Carlo Forestiere, Giuliana Di Martino, Selcuk Yerci, Francesco Priolo, and Luca Dal Negro  »View Author Affiliations

Optics Express, Vol. 20, Issue S3, pp. A418-A430 (2012)

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We report on the design, fabrication and measurement of ultra-thin film Silicon On Insulator (SOI) Schottky photo-detector cells with nanostructured plasmonic arrays, demonstrating broadband enhanced photocurrent generation using aperiodic golden angle spiral geometry. Both golden angle spiral and periodic arrays of various center-to-center particle spacing were investigated to optimize the photocurrent enhancement. The primary photocurrent enhancement region is designed for the spectral range 600nm-950nm, where photon absorption in Si is inherently poor. We demonstrate that cells coupled to spiral arrays exhibit higher photocurrent enhancement compared to optimized periodic gratings structures. The findings are supported through coupled-dipole numerical simulations of radiation diagrams and finite difference time domain simulations of enhanced absorption in Si thin-films.

© 2012 OSA

OCIS Codes
(350.6050) Other areas of optics : Solar energy
(250.5403) Optoelectronics : Plasmonics

ToC Category:

Original Manuscript: February 17, 2012
Manuscript Accepted: April 5, 2012
Published: April 19, 2012

Jacob Trevino, Carlo Forestiere, Giuliana Di Martino, Selcuk Yerci, Francesco Priolo, and Luca Dal Negro, "Plasmonic-photonic arrays with aperiodic spiral order for ultra-thin film solar cells," Opt. Express 20, A418-A430 (2012)

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