Open AccessFrequency Selective Surfaces as Near Infrared Electro-Magnetic Filters for Thermophotovoltaic Spectral Control
Author(s) -
Ryan T. Kristensen,
John F. Beausang,
D.M. DePoy
Publication year - 2003
Language(s) - English
Resource type - Reports
DOI - 10.2172/822277
Subject(s) - thermophotovoltaic , microwave , selective surface , materials science , optoelectronics , infrared , absorption (acoustics) , filter (signal processing) , thermal radiation , electromagnetic radiation , radiation , optical filter , electromagnetic spectrum , optics , common emitter , electrical engineering , physics , engineering , telecommunications , thermodynamics , composite material
Frequency selective surfaces (FSS) effectively filter electromagnetic radiation in the microwave band (1mm to 100mm). Interest exists in extending this technology to the near infrared (1 {micro}m to 10 {micro}m) for use as a filter of thermal radiation in thermophotovoltaic (TPV) direct energy conversion. This paper assesses the ability of FSS to meet the strict spectral performance requirements of a TPV system. Inherent parasitic absorption, which is the result of the induced currents in the FSS metallization, is identified as a significant obstacle to achieving high spectral performance