Abstract: This study examined the optical, structural, morphological, and electrical properties of polycrystalline cadmium telluride films fabricated using electrochemical deposition in a two-electrode system. Cadmium acetate is a source of cadmium and is one of the few precursors used to prepare cadmium tellurides. CdTe films were grown on glass substrates of fluorinated tin oxide (FTO), followed by thermal annealing at 200, 300, 350, and 400 °C. In addition, chlorination treatment was conducted at 400 °C. We analyzed various physical properties using characterization techniques, such as transmittance, X-ray diffraction, scanning electron microscopy with energy-dispersive X-ray spectroscopy (EDX), and a source meter. The increase in temperature after cadmium telluride deposition increased the optical transmittance, resulting in a progressive decrease in the optical energy bandgap from 1.74 to 1.49 eV. We computed various dielectric and optical constants using the Swanepoel and Herve-Vandamme models necessary for dielectric theory. Thermal annealing improved the crystallinity of the films (cubic structure), with 111 orientations being predominant.  The heat treatment also determined and examined the various crystallinity parameters in detail. Surface morphology analysis revealed that the films exhibited homogeneity, high compaction, uniformity, and the absence of crystal imperfections. 

Keywords: CdTe, optical bandgap, refractive index, photovoltaic, absorber layer, electrochemical deposition.

Title: Enhancing the Optical and Structural Properties of CdTe Thin Films via Thermal Treatments for Solar Cell Applications

Author: DALAL N. ALHILFI, ALAA S. AL-KABBI

International Journal of Novel Research in Physics Chemistry & Mathematics

ISSN 2394-9651

Vol. 11, Issue 3, September 2024 - December 2024

Page No: 33-48

Novelty Journals

Website: www.noveltyjournals.com

Published Date: 23-December-2024

Abstract: In this paper, based on a new multiplication of fractional analytic functions, we find the fractional Fourier series expansions of two types of matrix fractional functions. Matrix fractional Euler’s formula and matrix fractional DeMoivre’s formula play important roles in this article. In fact, our results are generalizations of ordinary calculus results.    

Keywords: New multiplication, fractional analytic functions, fractional Fourier series expansions, matrix fractional functions, matrix fractional Euler’s formula, matrix fractional DeMoivre’s formula.

Title: Evaluating Fractional Fourier Series Expansions of Two Types of Matrix Fractional Functions

Author: Chii-Huei Yu

International Journal of Novel Research in Physics Chemistry & Mathematics

ISSN 2394-9651

Vol. 11, Issue 3, September 2024 - December 2024

Page No: 28-32

Novelty Journals

Website: www.noveltyjournals.com

Published Date: 11-November-2024

Abstract: Based on literature review and expert interviews, this study developed measurement tools to empirically demonstrate the positive and significant influence of mathematical culture on primary school students' interest in mathematics learning. An evaluation index system was established to measure the impact of mathematics culture on students' interest, and an evaluation model was constructed to assess the influence of mathematics culture on primary school students' interest in mathematics learning.

Keywords: Mathematics culture; Primary school students; Interest in mathematics learning; Evaluation model.

Title: Assessment of the Influence of Mathematics Culture on Primary School Students' Interest in Mathematics Learning

Author: Su Liqing, Fu Tiangui

International Journal of Novel Research in Physics Chemistry & Mathematics

ISSN 2394-9651

Vol. 11, Issue 3, September 2024 - December 2024

Page No: 15-27

Novelty Journals

Website: www.noveltyjournals.com

Published Date: 30-October-2024

Abstract: The production of oil and natural gas from the earth core as a fuel to produce energy cause reduce in earth's mass that lead to change in some physical quantities, the speed of rotation around itself (around its axis) also around the sun. 

The angular momentum of the earth according to previous studies (literature review) will compare with that calculated in this study as it given in the table-1 which Show the earth's mass (M_e), oil mass (M_o) and natural gas mass (M_g), and table-2, Which show the angular momentum for earth (L_e) change in angular momentum due to change in earth's mass (ΔM_e) and the difference between earth's angular momentum and that after lost mass due to oil and natural gas mass. 

Keywords: Earth's mass, oil mass, natural gas mass and earth's angular momentum. 

Title: Oil And Natural Gas Production from Earth’s Core Cause Change in Its Mass and Angular Momentum

Author: Dr. Ziadan Jassim Khalaf

International Journal of Novel Research in Physics Chemistry & Mathematics

ISSN 2394-9651

Vol. 11, Issue 3, September 2024 - December 2024

Page No: 10-14

Novelty Journals

Website: www.noveltyjournals.com

Published Date: 07-October-2024

Abstract: An investigation of the structural, electrical, and optical properties of a monolayer of two-dimensional NbSe₂ is carried out with the assistance of the density functional theory. For the purpose of ensuring the structural and thermal stability of the monolayer, it is essential to ascertain the binding energy in addition to the phonon spectra. Through the use of first-principles simulations, we have investigated the electrical and optical properties of monolayers of NbSe₂ material. NbSe₂ monolayers have been shown to possess inherent properties that make them desirable for usage as two-dimensional materials in nanoelectronics applications. This discovery was made possible by the nature of the monolayers themselves. In addition, the optical properties of the NbSe₂ monolayers that were investigated for their two-dimensional applications are computed and described. These optical properties include the optical absorption coefficient, optical conductivity, reflectivity, and energy loss function.

Keywords: NbSe₂ monolayer, DFT, Band structure, Optical properties, metallic NbSe₂, Transition metal dichalcogenides.

Title: First Principle Computation of Monolayer-NbSe₂: Structural, Electronic and Optical Properties

Author: Aqeel Mohsin Ali

International Journal of Novel Research in Physics Chemistry & Mathematics

ISSN 2394-9651

Vol. 11, Issue 3, September 2024 - December 2024

Page No: 1-9

Novelty Journals

Website: www.noveltyjournals.com

Published Date: 25-September-2024