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Proceedings Paper

Simulations of solar cell absorption enhancement using resonant modes of a nanosphere array
Author(s): Jonathan Grandidier; Michael G. Deceglie; Dennis M. Callahan; Harry A. Atwater
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Paper Abstract

We propose an approach for enhancing the absorption of thin-film amorphous silicon solar cells using periodic arrangements of resonant dielectric nanospheres deposited as a continuous film on top of a thin planar cell. We numerically demonstrate this enhancement using 3D full field finite difference time domain simulations and 3D finite element device physics simulations of a nanosphere array above a thin-film amorphous silicon solar cell structure featuring back reflector and anti-reflection coating. In addition, we use the full field finite difference time domain results as input to finite element device physics simulations to demonstrate that the enhanced absorption contributes to the current extracted from the device. We study the influence of a multi-sized array of spheres, compare spheres and domes and propose an analytical model based on the temporal coupled mode theory.

Paper Details

Date Published: 21 February 2012
PDF: 9 pages
Proc. SPIE 8256, Physics, Simulation, and Photonic Engineering of Photovoltaic Devices, 825603 (21 February 2012); doi: 10.1117/12.909677
Show Author Affiliations
Jonathan Grandidier, California Institute of Technology (United States)
Michael G. Deceglie, California Institute of Technology (United States)
Dennis M. Callahan, California Institute of Technology (United States)
Harry A. Atwater, California Institute of Technology (United States)


Published in SPIE Proceedings Vol. 8256:
Physics, Simulation, and Photonic Engineering of Photovoltaic Devices
Alexandre Freundlich; Jean-Francois F. Guillemoles, Editor(s)

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