Optical Properties Of A Silver Layer In ZnO/Ag/ZnO and TiO2/Ag/TiO2 Systems

Abraham Belkind; Valery A. Koss; Kazem Memarzadeh; John A. Woollam

doi:10.1117/12.949933

6 March 1989 Optical Properties Of A Silver Layer In ZnO/Ag/ZnO and TiO₂/Ag/TiO₂ Systems

Abraham Belkind, Valery A. Koss, Kazem Memarzadeh, John A. Woollam

Proceedings Volume 1016, Optical Materials Technology for Energy Efficiency and Solar Energy Conversion VII; (1989) https://doi.org/10.1117/12.949933
Event: 1988 International Congress on Optical Science and Engineering, 1988, Hamburg, Germany

Abstract

Effective dielectric constants of the silver layers in three ZnO/Ag/ZnO and two Ti0₂/Ag/Ti0₂ coatings are determined using spectroscopic ellipsometry assuming a three-layer model for the coatings. Drude analysis of the data shows that the effective dielectric constants of silver in the red and near infrared regions are close to that of bulk silver, and both, bulk plasmon energy and core polarizability, depend on the layer thickness. Three peaks, at 3.8-3.9, 3.5-3.7 and 2.9-3.3 eV, are observed in the spectra of the imaginary part of the effective dielectric constant. Generation of surface plasmons, indicated by these peaks, is considered as a consequence of surface roughness which is not included in the original three-layer model. Analysis of data on transmittance and reflectance, measured at incidence angles of 45° and 60° , confirms surface plasmon generation.

Citation Download Citation

Abraham Belkind, Valery A. Koss, Kazem Memarzadeh, and John A. Woollam "Optical Properties Of A Silver Layer In ZnO/Ag/ZnO and TiO₂/Ag/TiO₂ Systems", Proc. SPIE 1016, Optical Materials Technology for Energy Efficiency and Solar Energy Conversion VII, (6 March 1989); https://doi.org/10.1117/12.949933

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