Exact field solution to guided wave progagation in lossy thin films

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Publication Type Journal Article
School or College College of Engineering
Department Materials Science & Engineering
Creator Scarpulla, Michael
Other Author Nagel, James R.; Blair, Steve
Title Exact field solution to guided wave progagation in lossy thin films
Date 2011
Description Wave guidance is an important aspect of light trapping in thin film photovoltaics making it important to properly model the effects of loss on the field profiles. This paper derives the full-field solution for electromagnetic wave propagation in a symmetric dielectric slab with finite absorption. The functional form of the eigenvalue equation is identical to the lossless case except the propagation constants take on complex values. Additional loss-guidance and anti-guidance modes appear in the lossy model which do not normally exist in the analogous lossless case. An approximate solution for the longitudinal attenuation coefficient ?z is derived from geometric optics and shows excellent agreement with the exact value. Lossy mode propagation is then explored in the context of photovoltaics by modeling a thin film solar cell made of amorphous silicon.
Type Text
Publisher Optical Society of America
Volume 19
Issue 21
First Page 20159
Last Page 20171
Language eng
Bibliographic Citation Nagel, J. R., Blair, S. & Scarpulla, M. (2011). Exact field solution to guided wave progagation in lossy thin films. OpticsInfoBase Journals and Proceedings, 19(21), 20159-71.
Rights Management © Optical Society of America
Format Medium application/pdf
Format Extent 1,218,136 bytes
Identifier ir-main,17095
ARK ark:/87278/s6s760h2
Setname ir_uspace
ID 703425
Reference URL https://collections.lib.utah.edu/ark:/87278/s6s760h2
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