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Proceedings Paper

Exact field solution to guided wave propagation in lossy thin films
Author(s): James R. Nagel; Steve Blair; Michael A. Scarpulla
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Paper Abstract

The problem of light trapping in thin film solar cells is one of mode coupling into a lossy waveguide structure. This paper therefore derives the full-field solution for electromagnetic wave propagation in a three-layer dielectric system with arbitrary complex indices of refraction. The functional form of the eigenvalue equation is identical to that of the strictly lossless case, but with complex-valued propagation constants rather than real. Lossy mode propagation is then explored in the context of photovoltaics by modeling a thin film solar cell made of amorphous silicon with an aluminum back contact.

Paper Details

Date Published: 21 February 2012
PDF: 7 pages
Proc. SPIE 8256, Physics, Simulation, and Photonic Engineering of Photovoltaic Devices, 825606 (21 February 2012); doi: 10.1117/12.910168
Show Author Affiliations
James R. Nagel, The Univ. of Utah (United States)
Steve Blair, The Univ. of Utah (United States)
Michael A. Scarpulla, The Univ. of Utah (United States)

Published in SPIE Proceedings Vol. 8256:
Physics, Simulation, and Photonic Engineering of Photovoltaic Devices
Alexandre Freundlich; Jean-Francois F. Guillemoles, Editor(s)

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