Functionalization of Surfaces with Optical Coatings Produced by PVD Magnetron Sputtering

Functionalization of Surfaces with Optical Coatings Produced by PVD Magnetron Sputtering

Walter Raniero (University of Trento, Italy), Gianantonio Della Mea (University of Trento, Italy) and Matteo Campostrini (Legnaro National Laboratories, Italy)
Copyright: © 2016 |Pages: 38
DOI: 10.4018/978-1-5225-0066-7.ch007
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This chapter describes the functionalization of the surface of the glass through thin film inorganic coatings. Such filters called dichroic filters, following the physical principle of interference of light using the rules of optical physics. The design of the optical multilayer materials with high and low refractive index and optimizing the predetermined optical responses. The AFM quantify the real thickness and, calibrate the deposition plant, using as an input data for the simulation to evaluate the dispersion index refraction and absorption. The dichroic filters separate the incident radiation into two or more predetermined optical bands. The materials used are deposited using PVD Reactive Magnetron Sputtering, allows to increase the deposition rate, to obtain good homogeneity range of the surface deposited. The set point of deposition which allows to obtain stoichiometric oxides is analyzed with the technique RBS. These optical filters, also called dichroic are applied in the research field of the splitting photovoltaic concentration.
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Physics Of Thin Films

In the field of geometrical optics, each optical phenomenon is connected with the interaction of electromagnetic radiation with matter. The classical description of electric and magnetic fields in matter (O.Stenzel, 2005), (Ohring, 1992) is given by Maxwell’s Equations (Macleod, 1986):

(4) where978-1-5225-0066-7.ch007.m05and 978-1-5225-0066-7.ch007.m06are respectively the vectors of the electric and magnetic field strength, 978-1-5225-0066-7.ch007.m07, and 978-1-5225-0066-7.ch007.m08respectively represent the magnetic field and electric displacement, 978-1-5225-0066-7.ch007.m09is the polarization density, and 978-1-5225-0066-7.ch007.m10is the magnetization.

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