Exploring the Interrelation between Urbach Energy and Dielectric Constant in Hf-Substituted BaTiO3

OV Rambadey, A Kumar, A Sati, PR Sagdeo - ACS omega, 2021 - ACS Publications
The variation of dielectric constant (εr) in the low-frequency region (∼ 106 Hz) in Hf-
substituted BaTiO3 has been modelled considering the electronic disorder in the form of …

Nesting-like band gap in bismuth sulfide Bi 2 S 3

WM Linhart, SJ Zelewski, P Scharoch… - Journal of Materials …, 2021 - pubs.rsc.org
The van der Waals material Bi2S3 is a potential solar absorber, but its optoelectronic
properties are not fully explored and understood. Here, using theoretical calculations and …

New optical dispersion models for the accurate description of the electrical permittivity in direct and indirect semiconductors

K Lizárraga, LA Enrique-Morán, A Tejada… - Journal of Physics D …, 2023 - iopscience.iop.org
We propose new optical dispersion models to describe the imaginary part of the electrical
permittivity of dielectric and semiconductor materials in the fundamental absorption region …

Amalgamation of Photostriction, Photodomain, and Photopolarization Effects in BaTiO3 and Its Electronic Origin

A Bagri, A Jana, G Panchal, DM Phase… - ACS Applied …, 2022 - ACS Publications
Multifunctional oxides offer huge potential for technological applications, owing to their
inclusive physical properties such as ferroelectric, piezoelectric, and electro-caloric …

Temperature dependence of disorder sensitivity of phonon modes in finite-gap materials

OV Rambadey, K Kumar, PR Sagdeo - Physical Review B, 2024 - APS
The correlation between electronic disorder (quantified by the Urbach energy EU) and
phonon linewidth (Γ) is known to be linear. However, both parameters exhibit temperature …

The Impact of Ammonium Fluoride on Structural, Absorbance Edge, and the Dielectric Properties of Polyvinyl Alcohol Films: Towards a Novel Analysis of the Optical …

SH Zyoud, W Jilani, A Bouzidi, TH AlAbdulaal… - Crystals, 2023 - mdpi.com
The new proton-conducting composite electrolyte films (PCCEFs) consisting of polyvinyl
alcohol (PVA) with varying ammonium fluoride salt concentrations were created using an …

[PDF][PDF] Effect of Annealing Times on the Structural and Optical Properties of PbO Thin Films Prepared by DC Sputtering

AF Rauuf, KA Aadim - Iraqi Journal of Science, 2023 - iasj.net
In this work, lead oxide (PbO) thin films were deposited using DC sputtering method on a
surface of glass substrates and then thermally annealed at a temperature of 473K with …

Absorption limit in direct gap III–V semiconductors

M Bhowmick, H Xi, B Ullrich - Journal of Applied Physics, 2023 - pubs.aip.org
The comparison of experimentally found absorption limits, and their variations in compound
semiconductors, with theoretical expectations was never a particularly studied subject …

Enhancing the Swanepoel Method: Precise Envelope Detection of Thin-Film Transmission Spectra

MB Matito, A Marquez, S Lopez-Tapia, S Fernández… - 2024 - preprints.opticaopen.org
The Swanepoel method is a widely used optical technique for characterizing thin films
through normal-incidence transmission measurements. A critical step in this approach …

Investigation of the Spectral Response of nBn Photodiodes Based on InAsSb

VS Kovshov - Journal of Communications Technology and …, 2023 - Springer
The classical structure of n B n photodiode based on InAsSb for the detection in the mid-
wave infrared (MWIR) range is considered. The optical absorption in the heterostructure at …