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Proceedings Article

Spectrally selective intermediate reflectors for tandem thin-film silicon solar cells

[+] Author Affiliations
A. Hoffmann, U. W. Paetzhold, T. Merdzhanova, A. Lambertz, C. Ulbrich, K. Bittkau, U. Rau

Forschungszentrum Jülich GmbH (Germany)

O. Höhn

Fraunhofer-Institut für Solare Energiesysteme (Germany)

Proc. SPIE 8823, Thin Film Solar Technology V, 882305 (September 11, 2013); doi:10.1117/12.2023648
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From Conference Volume 8823

  • Thin Film Solar Technology V
  • Louay A. Eldada; Michael J. Heben
  • San Diego, California, United States | August 25, 2013

abstract

Thin–film silicon tandem solar cells consist of an amorphous silicon top cell and a microcrystalline silicon bottom cell stacked in series. In order to match the photocurrents of the top cell and the bottom cell, a proper photon management is essential. In this regard, we present the conceptual design and optical simulations of an intermediate reflector consisting of a stack of microcrystalline silicon oxide layers of different, alternating refractive indices. In contrast to 1–layer intermediate reflectors, the spectral and directional selectivity of these intermediate reflectors result in a gain for the top cell current while simultaneously increasing the charge carrier generation in the bottom cell. © (2013) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Citation

A. Hoffmann ; U. W. Paetzhold ; T. Merdzhanova ; A. Lambertz ; O. Höhn, et al.
" Spectrally selective intermediate reflectors for tandem thin-film silicon solar cells ", Proc. SPIE 8823, Thin Film Solar Technology V, 882305 (September 11, 2013); doi:10.1117/12.2023648; http://dx.doi.org/10.1117/12.2023648


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