title   
  

Absorption efficiency enhancement in inorganic and organic thin film solar cells via plasmonic honeycomb nanoantenna arrays

Tok, Rüştü Umut and Şendur, Kürşat (2013) Absorption efficiency enhancement in inorganic and organic thin film solar cells via plasmonic honeycomb nanoantenna arrays. Optics Letters, 38 (16). pp. 3119-3122. ISSN 1539-4794 (Online) 0146-9592 (Print)

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Official URL: http://dx.doi.org/10.1364/OL.38.003119

Abstract

We demonstrate theoretically that by embedding plasmonic honeycomb nanoantenna arrays into the active layers of inorganic (c-Si) and organic (P3HT:PCBM/PEDOT:PSS) thin film solar cells, absorption efficiency can be improved. To obtain the solar cell absorption spectrum that conforms to the solar radiation, spectral broadening is achieved by breaking the symmetry within the Wigner-Seitz unit cell on a uniform hexagonal grid. For optimized honeycomb designs, absorption efficiency enhancements of 106.2% and 20.8% are achieved for c-Si and P3HT:PCBM/PEDOT: PSS thin film solar cells, respectively. We have demonstrated that the transverse modes are responsible for the enhancement in c-Si solar cells, whereas both the longitudinal and transverse modes, albeit weaker, are the main enhancement mechanisms for P3HT: PCBM/PEDOT: PSS solar cells. For both inorganic and organic solar cells, the absorption enhancement is independent of polarization.

Item Type:Article
Subjects:UNSPECIFIED
ID Code:21765
Deposited By:Kürşat Şendur
Deposited On:03 Oct 2013 15:05
Last Modified:24 Dec 2014 14:48

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