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Energy Express

Energy Express

  • Editor: Christian Seassal
  • Vol. 22, Iss. S3 — May. 5, 2014
  • pp: A800–A811

Multilayer nanoparticle arrays for broad spectrum absorption enhancement in thin film solar cells

Aravind Krishnan, Snehal Das, Siva Rama Krishna, and Mohammed Zafar Ali Khan  »View Author Affiliations

Optics Express, Vol. 22, Issue S3, pp. A800-A811 (2014)

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In this paper, we present a theoretical study on the absorption efficiency enhancement of a thin film amorphous Silicon (a-Si) photovoltaic cell over a broad spectrum of wavelengths using multiple nanoparticle arrays. The light absorption efficiency is enhanced in the lower wavelengths by a nanoparticle array on the surface and in the higher wavelengths by another nanoparticle array embedded in the active region. The efficiency at intermediate wavelengths is enhanced by the simultaneous resonance from both nanoparticle layers. We optimize this design by tuning the radius of particles in both arrays, the period of the array and the distance between the two arrays. The optimization results in a total quantum efficiency of 62.35% for a 0.3 μm thick a-Si substrate.

© 2014 Optical Society of America

OCIS Codes
(240.6680) Optics at surfaces : Surface plasmons
(250.0250) Optoelectronics : Optoelectronics
(290.4020) Scattering : Mie theory
(350.6050) Other areas of optics : Solar energy
(250.5403) Optoelectronics : Plasmonics
(310.6845) Thin films : Thin film devices and applications

ToC Category:
Light Trapping for Photovoltaics

Original Manuscript: February 6, 2014
Manuscript Accepted: March 26, 2014
Published: April 7, 2014

Aravind Krishnan, Snehal Das, Siva Rama Krishna, and Mohammed Zafar Ali Khan, "Multilayer nanoparticle arrays for broad spectrum absorption enhancement in thin film solar cells," Opt. Express 22, A800-A811 (2014)

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