Nanotech 2014 Vol. 3
Nanotech 2014 Vol. 3
Nanotechnology 2014: Electronics, Manufacturing, Environment, Energy & Water

Solar Power, Fuel Cells, Renewables & Carbon Capture Chapter 5

Improved Nanophotonics Simulation Tools for Light-Trapping in Photovoltaics

Authors: S. Shepard and F. Rubaiat

Affilation: Louisiana Tech University, United States

Pages: 346 - 348

Keywords: solar energy, photovoltaics, light trapping, nanoparticle scattering

Abstract:
Models used in the field of nanoparticle enhanced light-trapping have a wide range of complexity. Often one simply calculates how much power is absorbed in a particular region e.g., a layer of silicon withing a photovoltaic device. It is important to distinguish however “bad” material absorptions from the “good” absorptions which generate current (within a PN junction). Supercomputer simulations can incorporate both the carrier dynamics within a PN junction as well as the optical scattering from nanoparticles but these are too complex for most purposes. We describe herein a new nanophotonic simulation methodology in which we circumvent the complexities of carrier dynamics via an efective loss based on measured responsivity data to model the PN junction. A model for incorporating responsivity in an ad hoc way is shown to yield reasonable results in a how loss limit. We go beyond that limit via another model in which we allow the power we extract from the device to influence the quality of the trap itself.


ISBN: 978-1-4822-5830-1
Pages: 588
Hardcopy: $209.95