Diffraction grating structures in solar cells

Saleem H. Zaidi, James M. Gee, Douglas S. Ruby

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

41 Citations (Scopus)

Abstract

Sub-wavelength periodic texturing (gratings) of crystalline-silicon (c-Si) surfaces for solar cell applications can be designed for maximizing optical absorption in thin c-Si films. We have investigated c-Si grating structures using rigorous modeling, hemispherical reflectance, and internal quantum efficiency measurements. Model calculations predict almost ∼ 100 % energy coupling into obliquely propagating diffraction orders. By fabrication and optical characterization of a wide range of ID & 2D c-Si grating structures, we have achieved broadband, low (∼ 5 %) reflectance without an anti-reflection film. By integrating grating structures into conventional solar cell designs, we have demonstrated short-circuit current density enhancements of 3.4 and 4.1 mA/cm2 for rectangular and triangular 1D grating structures compared to planar controls. The effective path length enhancements due to these gratings were 2.2 and 1.7, respectively. Optimized 2D gratings are expected to have even better performance.

Original languageEnglish
Title of host publicationConference Record of the IEEE Photovoltaic Specialists Conference
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages395-398
Number of pages4
Volume2000-January
ISBN (Print)0780357728
DOIs
Publication statusPublished - 2000
Externally publishedYes
Event28th IEEE Photovoltaic Specialists Conference, PVSC 2000 - Anchorage, United States
Duration: 15 Sep 200022 Sep 2000

Other

Other28th IEEE Photovoltaic Specialists Conference, PVSC 2000
CountryUnited States
CityAnchorage
Period15/9/0022/9/00

Fingerprint

Diffraction gratings
Solar cells
Crystalline materials
Silicon
Texturing
Quantum efficiency
Short circuit currents
Light absorption
Current density
Diffraction
Fabrication
Wavelength

ASJC Scopus subject areas

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

Cite this

Zaidi, S. H., Gee, J. M., & Ruby, D. S. (2000). Diffraction grating structures in solar cells. In Conference Record of the IEEE Photovoltaic Specialists Conference (Vol. 2000-January, pp. 395-398). [915850] Institute of Electrical and Electronics Engineers Inc.. https://doi.org/10.1109/PVSC.2000.915850

Diffraction grating structures in solar cells. / Zaidi, Saleem H.; Gee, James M.; Ruby, Douglas S.

Conference Record of the IEEE Photovoltaic Specialists Conference. Vol. 2000-January Institute of Electrical and Electronics Engineers Inc., 2000. p. 395-398 915850.

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

Zaidi, SH, Gee, JM & Ruby, DS 2000, Diffraction grating structures in solar cells. in Conference Record of the IEEE Photovoltaic Specialists Conference. vol. 2000-January, 915850, Institute of Electrical and Electronics Engineers Inc., pp. 395-398, 28th IEEE Photovoltaic Specialists Conference, PVSC 2000, Anchorage, United States, 15/9/00. https://doi.org/10.1109/PVSC.2000.915850
Zaidi SH, Gee JM, Ruby DS. Diffraction grating structures in solar cells. In Conference Record of the IEEE Photovoltaic Specialists Conference. Vol. 2000-January. Institute of Electrical and Electronics Engineers Inc. 2000. p. 395-398. 915850 https://doi.org/10.1109/PVSC.2000.915850
Zaidi, Saleem H. ; Gee, James M. ; Ruby, Douglas S. / Diffraction grating structures in solar cells. Conference Record of the IEEE Photovoltaic Specialists Conference. Vol. 2000-January Institute of Electrical and Electronics Engineers Inc., 2000. pp. 395-398
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