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Proceedings Paper

Computational investigation of silicon thin-film solar cells with grating structures fabricated by holographic lithography
Author(s): Martin Theuring; Jürgen Lacombe; Kambulakwao Chakanga; Ruben Hünig; Klaus Huska; Martin Vehse; Karsten von Maydell; Uli Lemmer; Carsten Agert
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Paper Abstract

Light trapping due to rough interfaces is a common and industrially applied technique to enhance cell performance in silicon thin-film solar cells. The induced scattering enhances the absorption and consequently the conversion efficiency of the device. Periodic structures promise to further enhance the light trapping, allowing a beneficial reduction of the absorber layer thickness. In this work, solar cells with transparent front contacts with a two-dimensional (2D) grating structure produced by holographic lithography are investigated. The grating structures are characterized by various means and the results are used to calibrate finite-difference time-domain (FDTD) simulations. With the computational method, the influence of the grating height on the solar cell performance is investigated.

Paper Details

Date Published: 2 May 2012
PDF: 8 pages
Proc. SPIE 8438, Photonics for Solar Energy Systems IV, 84381Q (2 May 2012); doi: 10.1117/12.921799
Show Author Affiliations
Martin Theuring, Next Energy (Germany)
Jürgen Lacombe, Next Energy (Germany)
Kambulakwao Chakanga, Next Energy (Germany)
Ruben Hünig, Karlsruhe Institute of Technology (Germany)
Klaus Huska, Karlsruhe Institute of Technology (Germany)
Martin Vehse, Next Energy (Germany)
Karsten von Maydell, Next Energy (Germany)
Uli Lemmer, Karlsruhe Institute of Technology (Germany)
Carsten Agert, Next Energy (Germany)

Published in SPIE Proceedings Vol. 8438:
Photonics for Solar Energy Systems IV
Ralf Wehrspohn; Andreas Gombert, Editor(s)

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