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Nano Lett. 2010 Jun 9;10(6):2012-8. doi: 10.1021/nl904057p.

Broadband light absorption enhancement in thin-film silicon solar cells.

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  • 1Materials Science and Engineering, The University of Texas at Austin, Austin, Texas 78712, USA.


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 approximately 30% broadband absorption enhancement when comparing to bare thin film cells.

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