Microstructure and Optical Properties of Ag/TiO2 Multilayers

Abstract:

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The microstructure of Ag/TiO2 and Ag/Ti/TiO2 multilayer system are investigated by AFM and TEM, and their interfaces are analyzed by the means of spectroscopic ellipsometry (SE). The results show that the multilayer has a sharp interface without interdiffusion and interface reaction products. AFM surface roughness analysis indicates a 2-nm titanium transition layer can improve surface quality of silver films, because it is enabled to change silver island dimension and distribution and improve coverage of silver films on Ti/TiO2 substrate. This can be attributed to titanium ׳s strong oxygen affinity and good wettability to titanium dioxide. The optical properties test of TiO2/Ag/TiO2 multilayer demonstrates surface plasma resonance (SPR) absorption shifts towards long wave region with the increasing of the total thickness of dielectrics.

Info:

Periodical:

Key Engineering Materials (Volumes 353-358)

Edited by:

Yu Zhou, Shan-Tung Tu and Xishan Xie

Pages:

1724-1728

DOI:

10.4028/www.scientific.net/KEM.353-358.1724

Citation:

Z. G. Wang and X. Cai, "Microstructure and Optical Properties of Ag/TiO2 Multilayers", Key Engineering Materials, Vols. 353-358, pp. 1724-1728, 2007

Online since:

September 2007

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Price:

$35.00

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