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Energy Express

Energy Express

  • Editor: Christian Seassal
  • Vol. 21, Iss. S4 — Jul. 1, 2013
  • pp: A607–A615

Surface-concentrated light and efficient carrier collection in microhole-patterned Si solar cells

Joondong Kim, Eunsongyi Lee, Minkyu Ju, Hyunyub Kim, Junsin Yi, Sang-Jin Moon, Moon Seop Hyun, and Dong-Wook Kim  »View Author Affiliations

Optics Express, Vol. 21, Issue S4, pp. A607-A615 (2013)

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We investigate photovoltaic characteristics of crystalline Si solar cells with microhole-patterned surface. We compare patterned samples with different hole-widths and periods with a planar counterpart. From the finite-difference time-domain simulation, the patterned and planar samples are expected to have similar short circuit current density, Jsc (difference: 1.2%). In contrast, the difference in the measured Jsc is as large as 12.6%. The simulated optical field patterns reveal that the sample with more significantly concentrated light near the surface has higher quantum efficiency due to more efficient carrier collection. We report the highest efficiency of 15.6% among the hole-patterned solar cells.

© 2013 OSA

OCIS Codes
(040.5350) Detectors : Photovoltaic
(040.6040) Detectors : Silicon
(050.0050) Diffraction and gratings : Diffraction and gratings
(050.6875) Diffraction and gratings : Three-dimensional fabrication
(130.3990) Integrated optics : Micro-optical devices

ToC Category:

Original Manuscript: April 16, 2013
Revised Manuscript: May 12, 2013
Manuscript Accepted: May 13, 2013
Published: May 22, 2013

Joondong Kim, Eunsongyi Lee, Minkyu Ju, Hyunyub Kim, Junsin Yi, Sang-Jin Moon, Moon Seop Hyun, and Dong-Wook Kim, "Surface-concentrated light and efficient carrier collection in microhole-patterned Si solar cells," Opt. Express 21, A607-A615 (2013)

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