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Applied Optics

Applied Optics

APPLICATIONS-CENTERED RESEARCH IN OPTICS

  • Vol. 34, Iss. 14 — May. 10, 1995
  • pp: 2476–2482

Submicrometer gratings for solar energy applications

Claus Heine and Rudolf H. Morf  »View Author Affiliations


Applied Optics, Vol. 34, Issue 14, pp. 2476-2482 (1995)
http://dx.doi.org/10.1364/AO.34.002476


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Abstract

Diffractive optical structures for increasing the efficiency of crystalline silicon solar cells are discussed. As a consequence of the indirect band gap, light absorption becomes very ineffective near the band edge. This can be remedied by use of optimized diffraction gratings that lead to light trapping. We present blazed gratings that increase the optically effective cell thickness by approximately a factor of 5. In addition we present a wideband antireflection structure for glass that consists of a diffraction grating with a dielectric overcoat, which leads to an average reflection of less than 0.6% in the wavelength range between 300 and 2100 nm.

© 1995 Optical Society of America

History
Original Manuscript: August 1, 1994
Revised Manuscript: September 30, 1994
Published: May 10, 1995

Citation
Claus Heine and Rudolf H. Morf, "Submicrometer gratings for solar energy applications," Appl. Opt. 34, 2476-2482 (1995)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-34-14-2476

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