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Simulations of solar cell absorption enhancement using resonant modes of a nanosphere array

Grandidier, Jonathan and Deceglie, Michael G. and Callahan, Dennis M. and Atwater, Harry A. (2012) Simulations of solar cell absorption enhancement using resonant modes of a nanosphere array. In: Physics, simulation, and photonic engineering of photovoltaic devices : 23-26 January 2012, San Francisco, California, United States. Proceedings of SPIE. No.8256. Society of Photo-Optical Instrumentation Engineers (SPIE) , Bellingham, WA, Art. No. 825603. ISBN 9780819488992.

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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.

Item Type:Book Section
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URLURL TypeDescription chapter ItemJournal Article
Grandidier, Jonathan0000-0002-3384-6083
Atwater, Harry A.0000-0001-9435-0201
Additional Information:© 2012 SPIE. Online Feb 20, 2012. The authors wish to thank Raymond A. Weitekamp and Daniel B. Turner-Evans for useful technical input regarding simulations. The authors acknowledge support from the DOE “Light-Material Interactions in Energy Conversion” Energy Frontier Research Center under grant DE-SC0001293. Green Photonics Award Paper.
Funding AgencyGrant Number
Department of Energy (DOE)DE-SC0001293
Subject Keywords:Resonant Dielectric Structures, Solar cells, Nanospheres, Whispering gallery modes, Photovoltaics
Series Name:Proceedings of SPIE
Issue or Number:8256
Record Number:CaltechAUTHORS:20120416-073452529
Persistent URL:
Official Citation:Jonathan Grandidier, Michael G. Deceglie, Dennis M. Callahan and Harry A. Atwater, "Simulations of solar cell absorption enhancement using resonant modes of a nanosphere array", Proc. SPIE 8256, 825603 (2012);
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:30086
Deposited By: Tony Diaz
Deposited On:16 Apr 2012 21:56
Last Modified:26 Oct 2022 22:08

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