Light Trapping for Thin Silicon Solar Cells by Femtosecond Laser Texturing: Preprint

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Femtosecond laser texturing is used to create nano- to micron-scale surface roughness that strongly enhances light-trapping in thin crystalline silicon solar cells. Light trapping is crucial for thin solar cells where a single light-pass through the absorber is insufficient to capture the weakly absorbed red and near-infrared photons, especially with an indirect-gap semiconductor absorber layer such as crystalline Si which is less than 20 um thick. We achieve enhancement of the optical absorption from light-trapping that approaches the Yablonovitch limit.

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5 p.

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Lee, B. G.; Lin, Y. T.; Sher, M. J.; Mazur, E. & Branz, H. M. June 1, 2012.

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Femtosecond laser texturing is used to create nano- to micron-scale surface roughness that strongly enhances light-trapping in thin crystalline silicon solar cells. Light trapping is crucial for thin solar cells where a single light-pass through the absorber is insufficient to capture the weakly absorbed red and near-infrared photons, especially with an indirect-gap semiconductor absorber layer such as crystalline Si which is less than 20 um thick. We achieve enhancement of the optical absorption from light-trapping that approaches the Yablonovitch limit.

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5 p.

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  • Presented at the 2012 IEEE Photovoltaic Specialists Conference, 3-8 June 2012, Austin, Texas

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  • Report No.: NREL/CP-5200-54122
  • Grant Number: AC36-08GO28308
  • Office of Scientific & Technical Information Report Number: 1044436
  • Archival Resource Key: ark:/67531/metadc844003

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  • June 1, 2012

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  • May 19, 2016, 9:45 a.m.

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  • April 6, 2017, 12:37 p.m.

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Lee, B. G.; Lin, Y. T.; Sher, M. J.; Mazur, E. & Branz, H. M. Light Trapping for Thin Silicon Solar Cells by Femtosecond Laser Texturing: Preprint, article, June 1, 2012; Golden, Colorado. (digital.library.unt.edu/ark:/67531/metadc844003/: accessed August 16, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.