Optical absorption in microstructured crystalline silicon thin films

Salvador Guel Sandoval, M. Khizar, O. Modisette, J. Anderson, Ron Manginell, Nowshad Arnin, Kamaruzzaman Sopian, Saleem H. Zaidi

Research output: Chapter in Book/Report/Conference proceedingConference contribution

2 Citations (Scopus)

Abstract

In Si solar cells, the cost of the Si wafer itself accounts for over 50 % of energy conversion; therefore, economic use of Si contributes significantly towards lowering cost. Thin-film (∼ 25 μm) crystalline Si (c-Si) solar cells films are ideally-suited for low-cost photovoltaics. These thin-film c-Si solar cells are manufactured through a wide range of industrial processes including epitaxial growth, smart-cut, and layer transfer. In these devices, weak optical absorption of Si fundamentally limits performance. Historically, several surface texturing mechanisms have evolved to enhance optical absorption in solar cells. Most of geometrical-optics based texturing mechanisms require etched features comparable to thin-film thickness. As a result, randomly-created subwavelength structures are finding increasing applications for reducing surface reflection as well as enhancing near IR absorption. We report on diffractive and physical optics mechanisms in enhancing absorption in thin Si films. Randomly-created subwavelength diffractive structures as well periodically-patterned deeply-etched subwavelength structures have been demonstrated to be highly effective in reducing reflection and creating broadband absorption using scattering and physical optics mechanisms.

Original languageEnglish
Title of host publicationConference Record of the IEEE Photovoltaic Specialists Conference
Pages1597-1600
Number of pages4
DOIs
Publication statusPublished - 2010
Event35th IEEE Photovoltaic Specialists Conference, PVSC 2010 - Honolulu, HI
Duration: 20 Jun 201025 Jun 2010

Other

Other35th IEEE Photovoltaic Specialists Conference, PVSC 2010
CityHonolulu, HI
Period20/6/1025/6/10

Fingerprint

Light absorption
Solar cells
Crystalline materials
Physical optics
Thin films
Silicon
Texturing
Diffractive optics
Costs
Geometrical optics
Energy conversion
Epitaxial growth
Film thickness
Scattering
Economics

ASJC Scopus subject areas

  • Electrical and Electronic Engineering
  • Control and Systems Engineering
  • Industrial and Manufacturing Engineering

Cite this

Sandoval, S. G., Khizar, M., Modisette, O., Anderson, J., Manginell, R., Arnin, N., ... Zaidi, S. H. (2010). Optical absorption in microstructured crystalline silicon thin films. In Conference Record of the IEEE Photovoltaic Specialists Conference (pp. 1597-1600). [5617003] https://doi.org/10.1109/PVSC.2010.5617003

Optical absorption in microstructured crystalline silicon thin films. / Sandoval, Salvador Guel; Khizar, M.; Modisette, O.; Anderson, J.; Manginell, Ron; Arnin, Nowshad; Sopian, Kamaruzzaman; Zaidi, Saleem H.

Conference Record of the IEEE Photovoltaic Specialists Conference. 2010. p. 1597-1600 5617003.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Sandoval, SG, Khizar, M, Modisette, O, Anderson, J, Manginell, R, Arnin, N, Sopian, K & Zaidi, SH 2010, Optical absorption in microstructured crystalline silicon thin films. in Conference Record of the IEEE Photovoltaic Specialists Conference., 5617003, pp. 1597-1600, 35th IEEE Photovoltaic Specialists Conference, PVSC 2010, Honolulu, HI, 20/6/10. https://doi.org/10.1109/PVSC.2010.5617003
Sandoval SG, Khizar M, Modisette O, Anderson J, Manginell R, Arnin N et al. Optical absorption in microstructured crystalline silicon thin films. In Conference Record of the IEEE Photovoltaic Specialists Conference. 2010. p. 1597-1600. 5617003 https://doi.org/10.1109/PVSC.2010.5617003
Sandoval, Salvador Guel ; Khizar, M. ; Modisette, O. ; Anderson, J. ; Manginell, Ron ; Arnin, Nowshad ; Sopian, Kamaruzzaman ; Zaidi, Saleem H. / Optical absorption in microstructured crystalline silicon thin films. Conference Record of the IEEE Photovoltaic Specialists Conference. 2010. pp. 1597-1600
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