NDLI: Light trapping in thin film solar cells with sub-wavelength photonic crystal patterns

Content Provider	IEEE Xplore Digital Library
Author	Bozzola, A. Liscidini, M. Andreani, L.C.
Copyright Year	2012
Description	Author affiliation: Department of Physics, University of Pavia, via Bassi 6, 27100, Pavia, Italy (Bozzola, A.; Liscidini, M.; Andreani, L.C.)
Abstract	In this paper we investigate light-trapping in thin film crystalline silicon (c-Si) solar cells with shallow photonic crystal (PhC) front patterns. Coupling of light to the quasi-guided optical modes of the structures becomes a dominant feature when the thickness approaches the wavelength scale. Simple 1D and 2D patterns are investigated using a scattering matrix approach, and best results are compared with the Lambertian limit to light trapping. We show that light trapping can be enhanced by adding a controlled amount of disorder inside the PhC unit cell. We present some preliminary results about a Gaussian size-disorder in 1D structures, and we conclude that an advanced light-trapping design should rely on both order and disorder to maximize the absorption of sunlight.
Starting Page	1
Ending Page	4
File Size	416524
Page Count	4
File Format	PDF
ISBN	9781467322287
ISSN	21612064
e-ISBN	9781467322294
e-ISBN	9781467322270
DOI	10.1109/ICTON.2012.6254404
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2012-07-02
Publisher Place	United Kingdom
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Absorption Charge carrier processes Couplings Photovoltaic cells Silicon Photonics Current density solar cells light-trapping photonic crystals diffraction gratings
Content Type	Text
Resource Type	Article

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