Resonant Nanophotonic Spectrum Splitting for Ultrathin Multijunction Solar Cells.

ABSTRACT: We present an approach to spectrum splitting for photovoltaics that utilizes the resonant optical properties of nanostructures for simultaneous voltage enhancement and spatial separation of different colors of light. Using metal-insulator-metal resonators commonly used in broadband metamaterial absorbers we show theoretically that output voltages can be enhanced significantly compared to single-junction devices. However, the approach is general and works for any type of resonator with a large absorption cross section. Due to its resonant nature, the spectrum splitting occurs within only a fraction of the wavelength, as opposed to traditional spectrum splitting methods, where many wavelengths are required. Combining nanophotonic spectrum splitting with other nanophotonic approaches to volta

SUBMITTER: Mann SA 

PROVIDER: S-EPMC4550012 | biostudies-literature | 2015 Jul

REPOSITORIES: biostudies-literature