Photovoltaic Materials, Devices, and Technologies

Light scattering and parasitic absorption in thin film silicon solar cells containing metal nanoparticles

[+] Author Affiliations
Andrea Feltrin, Tomomi Meguro, Mitsuru Ichikawa, Fumiyasu Sezaki, Kenji Yamamoto

Kaneka Corporation, 5-1-1, Torikai-Nishi, Settsu, Osaka 566-0072, Japan

J. Photon. Energy. 1(1), 017003 (November 10, 2011). doi:10.1117/1.3658280
History: Received May 21, 2011; Revised August 22, 2011; Accepted October 13, 2011; Published November 10, 2011; Online November 10, 2011
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The efficiency of thin film silicon modules needs to further improve in the long term to stay competitive with other photovoltaic technologies. Advanced super light trapping designs can be implemented in thin film silicon devices for this purpose. Different approaches are possible and in this work we report on plasmonic back reflectors and intermediate layers designed to enhance optical reflection over conventional device structures. Metal nanoparticles are embedded in thin film single and tandem junctions with the purpose to increase light scattering back into the active layers of the solar cell. Results show that metal nanoparticles do not compromise the electrical solar cell parameters; however, the current increase proves to be elusive in most cases. The data suggest that a better control of the metal nanoparticle size and distribution might be needed in order to harness the full benefits of plasmonic effects in thin film silicon devices.

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© 2011 Society of Photo-Optical Instrumentation Engineers (SPIE)

Citation

Andrea Feltrin ; Tomomi Meguro ; Mitsuru Ichikawa ; Fumiyasu Sezaki and Kenji Yamamoto
"Light scattering and parasitic absorption in thin film silicon solar cells containing metal nanoparticles", J. Photon. Energy. 1(1), 017003 (November 10, 2011). ; http://dx.doi.org/10.1117/1.3658280


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