title: Angular response of thin-film organic solar cells with periodic metal back nanostrips.
abstract: We theoretically study the angular response of thin-film organic solar cells with periodic Au back nanostrips. In particular, the equation of the generalized Lambert's cosine law for arbitrary periodic nanostructure is formulated. We show that the periodic strip structure achieves wide-angle absorption enhancement compared with the planar nonstrip structure for both the s- and p-polarized light, which is mainly attributed to the resonant Wood's anomalies and surface plasmon resonances, respectively. The work is important for designing and optimizing high-efficiency photovoltaic cells.
authors.affiliation: Department of Electrical and Electronic Engineering, The University of Hong Kong, Hong Kong.
authors.forename: Wei E I
authors.initials: WE
authors.lastname: Sha
authors.forename: Wallace C H
authors.initials: WC
authors.lastname: Choy
authors.forename: Weng Cho
authors.initials: WC
authors.lastname: Chew