Open AccessEffect of dielectric Bragg grating nanostructuring on dye sensitized solar cells
Author(s) -
Daniele Barettin,
Aldo Di Carlo,
Roberta De Angelis,
M. Casalboni,
P. Prosposito
Publication year - 2012
Publication title -
optics express
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.20.00a888
Subject(s) - materials science , optics , grating , solar cell , dielectric , absorption (acoustics) , optoelectronics , diffraction grating , diffraction efficiency , wavelength , fiber bragg grating , rigorous coupled wave analysis , physics , composite material
We report on a theoretical investigation on the influence of different wavelength scale periodic grating architectures on dye sensitized solar cell (DSC). A broadband absorption enhancement is expected in such solar cells thanks to diffraction effects produced by these structures. Their optimal size has been analyzed in terms of pitch grating, height and position along the solar cell layers. Numerical simulations indicate that nanostructuring the interface between the active and the electrolyte layer by integrating a dielectric grating produces an absorption enhancement of 23.4%. The presented results have been also evaluated in view of feasible realistic structures compatible with low cost soft lithographic techniques.