Journal
NANO LETTERS
Volume 10, Issue 6, Pages 2012-2018Publisher
AMER CHEMICAL SOC
DOI: 10.1021/nl904057p
Keywords
Thin film solar cells; broadband absorption enhancement; surface plasmon polaritons; nanogratings; polarization-insensitive
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Funding
- U.S. National Science Foundation
- Office of Naval Research
- Air Force Office of Scientific Research (AFOSR)
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Currently, the performances of thin film solar cells are limited by poor light absorption and carrier collection. In this research, large, broadband, and polarization-insensitive light absorption enhancement was realized via integrating with unique metallic nanogratings. Through simulation, three possible mechanisms were identified to be responsible for such an enormous enhancement. A test for totaling the absorption over the solar spectrum shows an up to similar to 30% broadband absorption enhancement when comparing to bare thin film cells.
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