Realistic Simulation of Metal Nanoparticles on Solar Cells

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Abstract

We present a strategy for simulating the scattering effect of an array of self-aggregated (SA) metal nanoparticles (NPs) on the light absorption in solar cells. We include size and shape effects of the NPs, the effect of a layered substrate and the effect of the interaction between NPs. The simulation relies on realistic characterization by SEM microscopy of the random NP arrays. Time and memory limitations of numerical approaches are overcome using semianalytical expressions. Size and shape considerations deal with truncated-sphere shapes by using a polarisability tensor. This is a development of other models leading to equivalent dipoles from the external source and the radiated fields from the rest of NPs. Once an equivalent array of 3-D dipoles is found, the total electromagnetic field and optical simulations are performed. The general trends show good agreement with experimental measurements. A critical analysis of the model is presented, and some improvement strategies are discussed for future studies.

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Cortés-Juan, F., Espinosa-Soria, A., Connolly, J. P., Sánchez-Plaza, G., Hugonin, J. P., & Sanchis, P. (2015). Realistic Simulation of Metal Nanoparticles on Solar Cells. In Energy Procedia (Vol. 84, pp. 204–213). Elsevier Ltd. https://doi.org/10.1016/j.egypro.2015.12.315

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