Refractive index and extinction coefficient of CH_3NH_3PbI_3 studied by spectroscopic ellipsometry
نویسندگان
چکیده
منابع مشابه
Electrochemical reductive desorption of alkyl self-assembled monolayers studied in situ by spectroscopic ellipsometry: evidence for formation of a low refractive index region after desorption.
Gold-sulphur bonds holding self-assembled monolayers (SAMs) on their gold substrate can be broken by electrochemical reduction, which typically occurs in an electrode potential range where the electrochemical hydrogen evolution reaction (HER) is thermodynamically possible. This work uses an in situ coupling between cyclic voltammetry and spectroscopic ellipsometry to compare the interfacial str...
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Refractive index (RI) is a complex number comprising a real refractive index and an imaginary part: the absorption (or extinction) coefficient. The analysis of refractive index by the Surfoptic Imaging Reflectometer yields an approximation to the real part of the refractive index. The well established technique of ellipsometry, by contrast, can determine both the real refractive index and the e...
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The refractive index and thickness of SiO2 thin films naturally grown on Si substrates were determined simultaneously within the wavelength range of 220–1100 nm with variableangle spectroscopic ellipsometry. Different angles of incidence and wavelength ranges were chosen to enhance the analysis sensitivity for more accurate results. Several optical models describing the practical SiO2-Si system...
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متن کاملMeasurements of the complex refractive index of Pd and Pt films in air and upon adsorption of H2 gas
We present complex refractive index measurements of Pd and Pt films from 700-1700nm using variable angle spectroscopic ellipsometry. Refractive index changes upon H2 gas adsorption were determined by measuring normal incidence reflection and transmission. Keywords-ellipsometry, refractive index, extinction coefficient, thin film, palladium, platinum, hydrogen, gas sensors
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ژورنال
عنوان ژورنال: Optical Materials Express
سال: 2014
ISSN: 2159-3930
DOI: 10.1364/ome.5.000029