Integrated photonic structures for light trapping in thin-film Si solar cells
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Author(s)
Sheng, Xing
Johnson, Steven G.
Broderick, Lirong Z.
Michel, Jurgen
Kimerling, Lionel C.
Date Issued
March 2012
Journal
Applied Physics Letters
Publisher
American Institute of Physics (AIP)
Citation
Sheng, Xing et al. “Integrated photonic structures for light trapping in thin-film Si solar cells.” Applied Physics Letters 100.11 (2012): 111110. © 2012 American Institute of Physics
Version
Final published version
Abstract
We explore the mechanisms for an efficient light trapping structure for thin-film silicon solar cells. The design combines a distributed Bragg reflector (DBR) and periodic gratings. Using photonic band theories and numerical simulations, we discover that light can be scattered into the DBR by gratings, with an unusual way of light trapping different from metal reflectors and photonic crystals. We further investigate the influence of DBR on generated photocurrent in different device configurations. These results would provide new design rules for photonic structures in thin-film solar cells.
MIT Department
Massachusetts Institute of Technology. Department of Materials Science and Engineering
Massachusetts Institute of Technology. Department of Mathematics
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Article is made available in accordance with the publisher's policy and may be subject to US copyright law. Please refer to the publisher's site for terms of use.
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DOI of Published Version
https://doi.org/10.1063/1.3693613
