Unprecedentedly high reflectivity distributed Bragg reflectors consisting of fluorocarbon polymer (CFx) and high refractive index inorganic oxide multilayers have been fabricated by means of assisted ion-beam sputtering at room temperature. Multilayer stacks consisting of a CFx /TiOx and CFx /HfOx pairs exhibit reflectivities larger than 98% in the infrared and ultraviolet spectral region, respectively. The superior wide tunability and the high efficiency, with respect to inorganic- inorganic multilayers is due to the exceptionally low refractive index of the fluorcarbon polymer (n.1.35) on a very large spectral region ~300-2000 nm.
Organic-inorganic dielectric multilayer systems as high reflectivity Bragg reflectors
A Convertino;
1997
Abstract
Unprecedentedly high reflectivity distributed Bragg reflectors consisting of fluorocarbon polymer (CFx) and high refractive index inorganic oxide multilayers have been fabricated by means of assisted ion-beam sputtering at room temperature. Multilayer stacks consisting of a CFx /TiOx and CFx /HfOx pairs exhibit reflectivities larger than 98% in the infrared and ultraviolet spectral region, respectively. The superior wide tunability and the high efficiency, with respect to inorganic- inorganic multilayers is due to the exceptionally low refractive index of the fluorcarbon polymer (n.1.35) on a very large spectral region ~300-2000 nm.File in questo prodotto:
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