Optical constants, single-oscillator modal and refractive index dispersion analysis of lithium zinc bismuth borate glasses doped with Eu3+ ions

2016 ◽  
Author(s):  
Ramesh Boda ◽  
G. Srinivas ◽  
D. Komaraiah ◽  
B. Srinivas ◽  
Md. Shareefuddin ◽  
...  
Keyword(s):  
Refractive Index ◽  
Optical Constants ◽  
Dispersion Analysis ◽  
Borate Glasses ◽  
Refractive Index Dispersion ◽  
Bismuth Borate ◽  
Single Oscillator

scholarly journals Compositional dependence of optical band gap and refractive index in lead and bismuth borate glasses

2015 ◽  
Vol 68 ◽  
pp. 27-34 ◽  
Author(s):  
Saisudha B. Mallur ◽  
Tyler Czarnecki ◽  
Ashish Adhikari ◽  
Panakkattu K. Babu
Keyword(s):  
Refractive Index ◽  
Band Gap ◽  
Optical Band Gap ◽  
Borate Glasses ◽  
Compositional Dependence ◽  
Bismuth Borate

The refractive index dispersion and the optical constants of liquid crystal metal-free and nickel(II) phthalocyanines

2006 ◽  
Vol 373 (2) ◽  
pp. 262-266 ◽  
Author(s):  
F. Yakuphanoglu ◽  
M. Durmuş ◽  
M. Okutan ◽  
O. Köysal ◽  
V. Ahsen
Keyword(s):  
Refractive Index ◽  
Liquid Crystal ◽  
Optical Constants ◽  
Refractive Index Dispersion ◽  
Metal Free

Optical properties of Al-doped ZnO thin films obtained by the method of high-frequency magnetron sputtering

2021 ◽  
pp. 2150189
Author(s):  
A. Kashuba ◽  
H. Ilchuk ◽  
R. Petrus ◽  
I. Semkiv ◽  
O. Bovgyra ◽  
...  
Keyword(s):  
Thin Films ◽  
Refractive Index ◽  
Optical Properties ◽  
Magnetron Sputtering ◽  
High Frequency ◽  
Optical Constants ◽  
Zno Thin Films ◽  
Optical Parameters ◽  
Single Oscillator ◽  
Doped Zno

The optical constants and thickness of Al-doped ZnO (ZnO:Al(2.5 wt.%)) thin films prepared by high-frequency magnetron sputtering method are determined. ZnO:Al thin films are crystallized in the hexagonal structure from XRD studies. The optical constants and the bandgap of the films under study have been determined. Optical properties (refractive index [Formula: see text], absorption coefficient [Formula: see text], extinction coefficient [Formula: see text], dielectric functions [Formula: see text] and optical conductivity [Formula: see text]) of thin films and thickness [Formula: see text] can be determined from the transmission spectrum. The dispersion of the refractive index was explained using a single oscillator model. Single oscillator energy and dispersion energy are obtained from fitting. Optical parameters of the films were determined using the Cauchy, Sellmeier and Wemple models. The increasing value of dispersion parameter for polycrystalline thin films than for single crystals is observed. The fundamental absorption edge position (3.26 eV) in the transmittance spectrum of studied thin films corresponds to the values that are typical for ZnO:Al compound. No significant increase of the bandgap width was revealed by comparing ZnO:Al thin films with the known results of the optical studies of ZnO thin films. Possible reasons of such behavior were analyzed and the influence of bandgap increase on spectral behavior of optical functions are investigated. The material optical parameters such as normalized integrated transmission, zero and high-frequency dielectric constant, density of state effective mass ratio were also calculated.

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