Realistic reflectance spectrum of thin films covering a transparent optically thick substrate

Abstract

A spectrophotometric strategy is presented and discussed for calculating realistically the reflectance spectrum of an absorbing film deposited over a thick transparent or semi-transparent substrate. The developed route exploits simple mathematics, has wide range of applicability (high-to-weak absorption regions and thick-to-ultrathin films), rules out numerical and curve-fitting procedures as well as model-functions, inherently accounts for the non-measurable contribution of the film-substrate interface as well as substrate backside, and describes the film reflectance spectrum as determined by the experimental situation (deposition approach and parameters). The reliability of the method is tested on films of a well-known material (indium tin oxide) by deliberately changing film thickness and structural quality through doping. Results are found consistent with usual information yielded by reflectance, its inherent relationship with scattering processes and contributions to the measured total reflectance.


Tutti gli autori

  • M. Cesaria , A. P. Caricato , M. Martino

Titolo volume/Rivista

APPLIED PHYSICS LETTERS


Anno di pubblicazione

2014

ISSN

0003-6951

ISBN

Non Disponibile


Numero di citazioni Wos

2

Ultimo Aggiornamento Citazioni

28/04/2018


Numero di citazioni Scopus

2

Ultimo Aggiornamento Citazioni

22/04/2018


Settori ERC

Non Disponibile

Codici ASJC

Non Disponibile