Synthesis of Bismuth Oxide Thin Films Deposited by Reactive Magnetron Sputtering

Abstract

In this work Bi 2 O 3 thin films were deposited onto the Si (111) and soda lime glass substrates by the reactive direct current magnetron sputtering system using pure Bi as a sputtering target. The dependences of electro-optical characteristics of the films on the substrate type and temperature were investigated. Transmittance and reflectance of the Bi 2 O 3 films were measured with ultraviolet and visible light spectrometer. It was found that the substrate temperature during deposition has a very strong influence on the phase components of thin films. The results indicate that the direct allowed transitions dominate in the films obtained in this work. For the direct allowed transitions the band gap energy is found to be about 1.98 eV and 2.2 eV. The reflectance of thin bismuth oxide film depends on the substrate. Small transparency of thin films grown on glass is more related to large reflectance than absorption. The reflectance spectra of the bismuth oxide thin films deposited on the Si substrates show higher quality of optical characteristics compared to the samples deposited on glass substrates.

Effect of substrate temperature on bismuth oxide thin films grown by pulsed laser deposition

“…4b, and of the wavelength dependence of the refractive index (Fig. 5) is due to the noteworthy homogeneity of the films, giving rise to multiple reflections and the interfaces and to their interference [53]. The highest reflectance and refractive index are reached for the films grown at the lowest substrate temperature (i.e.…”

Bismuth Oxide Faceted Structures as a Photocatalyst Produced Using an Atmospheric Pressure Plasma Jet

“…33 , are also known [4]. All phases have different crystal structures and various optical, electrical, and mechanical properties [5], which are all important for the practical application of a photocatalyst. However, certain phases of this semiconductor, as reported in the literature, are characterized by desirable properties such as a narrow energy band gap [6], high refractive index [7], and photoconductivity and photoluminescence properties [8].…”

High‐temperature mass spectrometric study and modeling of thermodynamic properties of binary glass‐forming systems containing Bi2O3

“…Advanced materials based on bismuth(III) oxide, and in particular on the glass‐forming Bi 2 O 3 ‐SiO 2 system, have many important potential applications in fields such as fiber optics, optical communication employing glass‐ceramics for optical switches or optical signal exchangers, the preparation of thin films, potential solar converters, and as a less toxic substitute for lead oxide in glass radiation shields in nuclear physics…”