Organic-inorganic dielectric multilayer systems as high reflectivity distributed Bragg reflectors

被引:26
作者
Convertino, A [1 ]
Valentini, A [1 ]
Ligonzo, T [1 ]
Cingolani, R [1 ]
机构
[1] UNIV LECCE, DIPARTIMENTO SCI MAT,IST NAZL FIS MAT, I-73100 LECCE, ITALY
关键词
D O I
10.1063/1.119628
中图分类号
O59 [应用物理学];
学科分类号
摘要
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 similar or equal to 1.35) on a very large spectral region (300-2000 nm). (C) 1997 American Institute of Physics.
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页码:732 / 734
页数:3
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