title: Angular selective semi-transparent photovoltaics.
abstract: Conventional semi-transparent photovoltaics suffer from an inherent tradeoff between the amount of visible light transmitted versus absorbed, reducing energy conversion efficiency when higher transparency is desired. As a solution to lift this tradeoff, we propose a wavelength and angular selective reflector and demonstrate a potential implementation utilizing high aspect ratio metal nanoparticles. Using the anisotropy in the localized surface plasmon resonance wavelength, the proposed device can selectively harness sunlight incident at an elevated angle, increasing the power conversion efficiency by a factor of 1.44, while maintaining 70 percent optical transparency at normal incidence.
authors.affiliation: Department of Electrical Engineering and Computer Science, University of Michigan, 1301 Beal Avenue, Ann Arbor, Michigan 48109, USA.
authors.forename: Brian
authors.initials: B
authors.lastname: Roberts
authors.forename: D M
authors.initials: DM
authors.lastname: Nanditha
authors.forename: M
authors.initials: M
authors.lastname: Dissanayake
authors.forename: P-C
authors.initials: PC
authors.lastname: Ku