Strategies to control the spectral properties of Au-Ni thin films

THIN SOLID FILMS

卷:551

Article

McPherson, David J.¹  Supansomboon, Supitcha¹  Zwan, Benjamin²  Keast, Vicki J.²  Cortie, David L.^3,4  Gentle, Angus¹  Dowd, Annette¹  Cortie, Michael B.¹ 

[1] Univ Technol Sydney, Inst Nanoscale Technol, Broadway, NSW 2007, Australia

[2] Univ Newcastle, Sch Math & Phys Sci, Callaghan, NSW 2308, Australia

[3] Univ Wollongong, Inst Superconducting & Elect Mat, Wollongong, NSW 2522, Australia

[4] Australian Nucl Sci & Technol Org, Lucas Heights, NSW 2234, Australia

关键词: Physical vapor deposition;    Optical properties;    Multilayers;    Ab initio calculation;    Gold-nickel;   

DOI  :  10.1016/j.tsf.2013.11.115

来源: Elsevier

【 摘 要 】

Gold and nickel have quite different dielectric functions. Here we use a combination of calculation and sample manufacture to assess two strategies by which thin films of these elements can be produced with a controlled range of far-field optical properties. In the first approach, control can be achieved by manipulating the density of states of metastable solid solutions, which in turn controls the dielectric function. In the second approach the optical properties of the films are controlled by varying the geometry of stacks fabricated from the constituent elements. We show that the two approaches can produce equivalent results so both are viable options in practice. Modeling is used to reveal how the structure controls the optical properties and to map out the possible color gamut. Predictions are tested with thin film samples fabricated by magnetron sputtering. (C) 2013 Elsevier B. V. All rights reserved.

【 授权许可】

Free