Conference article, meeting abstract
Modeling nanostructure-enhanced light trapping in organic solar cells
Publication Details
Authors: | Adam, J. |
Publication year: | 2015 |
Pages range : | TBD |
Book title: | 5th International Workshop on Smart Materials and Structures - Faculté des Sciences et Techniques, Université Cadi Ayyad, Marrakech, Morocco, Marrakech, Morocco : Duration: 9. Sept 2015 - 12. Oct 2015 |
URN / URL: |
Abstract
A promising approach for improving the power conversion efficiencies of organic solar cells (OSCs) is by incorporating nanostructures in their thin film architecture to improve the light absorption in the device{\textquoteright}s active polymer layers. Here, we present a modelling framework for the prediction of optical and plasmonic field enhancement by nanostructures in (or close to) the active layers and electrodes in OSCs. We incorporate finite-difference time-domain (FDTD) calculations alongside semi- analytical approaches, as the rigorous coupled-wave analysis (RCWA) and mode-coupling theory. Our simulation results are closely related to and verified by our group{\textquoteright}s experimental outcomes. We will especially discuss latest results regarding the light trapping by (multi-)periodic [1] and fractal [2] grating structures, and investigate the effect of an alternative, cheap and large-scale production-compatible method for non-periodic electrode structuring by pores of controlled dimensions, formed through anodic oxidation of sputter-deposited high-purity aluminium films [3].[1] Kluge, C., et al. Multi-periodic nanostructures for photon control. Optics Express, 22 (S5), A1363. (2014)[2] Skigin, D., et al. Diffraction by fractal metallic supergratings. Optics Express, 15(24), 15628–15636 (2007)[3] Goszczak, A. J. et al. Nanoscale Aluminum dimples for light trapping in organic thin films (submitted)
A promising approach for improving the power conversion efficiencies of organic solar cells (OSCs) is by incorporating nanostructures in their thin film architecture to improve the light absorption in the device{\textquoteright}s active polymer layers. Here, we present a modelling framework for the prediction of optical and plasmonic field enhancement by nanostructures in (or close to) the active layers and electrodes in OSCs. We incorporate finite-difference time-domain (FDTD) calculations alongside semi- analytical approaches, as the rigorous coupled-wave analysis (RCWA) and mode-coupling theory. Our simulation results are closely related to and verified by our group{\textquoteright}s experimental outcomes. We will especially discuss latest results regarding the light trapping by (multi-)periodic [1] and fractal [2] grating structures, and investigate the effect of an alternative, cheap and large-scale production-compatible method for non-periodic electrode structuring by pores of controlled dimensions, formed through anodic oxidation of sputter-deposited high-purity aluminium films [3].[1] Kluge, C., et al. Multi-periodic nanostructures for photon control. Optics Express, 22 (S5), A1363. (2014)[2] Skigin, D., et al. Diffraction by fractal metallic supergratings. Optics Express, 15(24), 15628–15636 (2007)[3] Goszczak, A. J. et al. Nanoscale Aluminum dimples for light trapping in organic thin films (submitted)
