title: Effect of dielectric Bragg grating nanostructuring on dye sensitized solar cells.
abstract: 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.
authors.affiliation: Physics Department, University of Rome Tor Vergata, Via della Ricerca Scientifica 1, 00133 Rome, Italy.
authors.forename: Daniele
authors.initials: D
authors.lastname: Barettin
authors.forename: Aldo
authors.initials: A
authors.lastname: Di Carlo
authors.forename: Roberta
authors.initials: R
authors.lastname: De Angelis
authors.forename: Mauro
authors.initials: M
authors.lastname: Casalboni
authors.forename: Paolo
authors.initials: P
authors.lastname: Prosposito