What is it about?
The study of the infrared bulk and surface plasmonic resonance of a transparent conductive oxide made of fluorine doped tin films.
Why is it important?
Here we highlight some general features of surface plasmon polaritons (SPP) on transparent conductive oxides (TCO) in the near infrared (NIR) range, in the specific on fluorine doped tin (FTO) oxide films. The thickness dependent transition between a purely bulk resonance to the surface mode is put into evidence, together with the backbending of the modes due to the complex permittivity of a damped resonance. In particular the predicted range for the emergence of a surface plasmon polariton is found to be above λ≥2.1µm for commercial thin films of FTO, while the optimal film thickness for its observation is estimated to be around 200nm, in contrast to the standard 40nm for gold. FTO is one important class of widely used TCO which complements with ITO and AZO.
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This page is a summary of: Plasmon polaritons in the near infrared on fluorine doped tin oxide films, Optics Express, June 2009, Optical Society of America (OSA), DOI: 10.1364/oe.17.010155.
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