Optimization of textured-dielectric coatings for crystalline-silicon solar cells

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Description

The authors report on the optimization of textured-dielectric coatings for reflectance control in crystalline-silicon (c-Si) photovoltaic modules. Textured-dielectric coatings reduce encapsulated-cell reflectance by promoting optical confinement in the module encapsulation; i.e., the textured-dielectric coating randomizes the direction of rays reflected from the dielectric and from the c-Si cell so that many of these reflected rays experience total internal reflection at the glass-air interface. Some important results of this work include the following: the authors demonstrated textured-dielectric coatings (ZnO) deposited by a high-throughput low-cost deposition process; they identified factors important for achieving necessary texture dimensions; they achieved solar-weighted extrinsic reflectances as ... continued below

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4 p.

Creation Information

Gee, J.M.; Gordon, R. & Liang, H. July 1, 1996.

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This article is part of the collection entitled: Office of Scientific & Technical Information Technical Reports and was provided by UNT Libraries Government Documents Department to Digital Library, a digital repository hosted by the UNT Libraries. More information about this article can be viewed below.

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Authors

  • Gee, J.M. Sandia National Labs., Albuquerque, NM (United States). Photovoltaic System Components Dept.
  • Gordon, R.
  • Liang, H. Harvard Univ., Cambridge, MA (United States). Dept. of Chemistry

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  • Sandia National Laboratories
    Publisher Info: Sandia National Labs., Albuquerque, NM (United States)
    Place of Publication: Albuquerque, New Mexico

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Description

The authors report on the optimization of textured-dielectric coatings for reflectance control in crystalline-silicon (c-Si) photovoltaic modules. Textured-dielectric coatings reduce encapsulated-cell reflectance by promoting optical confinement in the module encapsulation; i.e., the textured-dielectric coating randomizes the direction of rays reflected from the dielectric and from the c-Si cell so that many of these reflected rays experience total internal reflection at the glass-air interface. Some important results of this work include the following: the authors demonstrated textured-dielectric coatings (ZnO) deposited by a high-throughput low-cost deposition process; they identified factors important for achieving necessary texture dimensions; they achieved solar-weighted extrinsic reflectances as low as 6% for encapsulated c-Si wafers with optimized textured-ZnO coatings; and they demonstrated improvements in encapsulated cell performance of up to 0.5% absolute compared to encapsulated planar cells with single-layer antireflection coatings.

Physical Description

4 p.

Notes

OSTI as DE96011841

Source

  • 25. photovoltaic solar energy conference, Washington, DC (United States), 13-17 May 1996

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  • Other: DE96011841
  • Report No.: SAND--95-2805C
  • Report No.: CONF-960513--13
  • Grant Number: AC04-94AL85000
  • Office of Scientific & Technical Information Report Number: 257305
  • Archival Resource Key: ark:/67531/metadc666222

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  • July 1, 1996

Added to The UNT Digital Library

  • June 29, 2015, 9:42 p.m.

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  • April 14, 2016, 9:15 p.m.

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Gee, J.M.; Gordon, R. & Liang, H. Optimization of textured-dielectric coatings for crystalline-silicon solar cells, article, July 1, 1996; Albuquerque, New Mexico. (digital.library.unt.edu/ark:/67531/metadc666222/: accessed September 20, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.