Articles
Peer-reviewed papers published in Physics Access.
-
Investigating the Performance of Perovskite Solar Cells Using Nickel Oxide and Copper Iodide as Ptyp
Lead-based perovskite solar cells (PSCs) have drawn much research attention over the years due to their impressive light-to-power conversion efficiency (PCE), low temperature with easy manufacturing, tolerance to defects...
-
Optical Behaviour of Caffeine Mixed Perovskite Photoanode for Photovoltaic Application
Halide perovskites such as methylammonium lead triiodide (CH3NH3PbI3) are attracting attention as energy-efficient light absorber materials for photovoltaic applications owing to their solution processing-power, tunable...
-
Optical and Morphological Study of Hydroxyapatite on Titanium Dioxide Particles for Photovoltaic App
In this study, a natural mineral termed hydroxyapatite (HA) (Ca10(PO4)6(OH)2) was produced with TiO2 stoichiometrically by normal sol-gel process. An investigation on how the different percentage weights of HA on TiO2 ca...
-
First Principle Investigation on Electronic Properties of Cationic and Anionic CO-Alloyed Cu2ZnSnS4
The primary goal of kesterite alloying is to allow for fine tweaking of the material's characteristics for advanced device engineering. Additionally, it is seen as a viable solution to inherent kesterite absorber difficu...
-
Influence of Front Contact Layer on the Performance of Bismuth-Based Perovskite Solar Cells
Numerical analysis has been carried out using SCAPS-1D to investigate the power conversion efficiency of bismuth-based perovskite solar cells employing various Transparent Conductive Oxides (TCOs) such as Molybdenum Trio...
-
Effect of Molar Concentrations on the Structural and Optical Properties of Zinc Oxide Thin Films
Thin films of zinc oxide (ZnO) were deposited on soda-lime (glass) substrate using chemical bath deposition (CBD) technique. The structural and optical properties of the deposited films were investigated using X-ray diff...
-
Occupational Radiation Dose and Ambient Dose Characterization in Selected Healthcare Facilities in Kitui County, Kenya
Radiation exposure during diagnostic radiology remains a critical occupational radiation safety concern as the global volume and complexity of medical imaging procedures continue to increase. This study assessed personal...
-
Integrated Aeromagnetic Structural Mapping and Magnetic Source Depth Estimation of the Kaduna Basement Complex, Northwestern Nigeria: Implications for Regional Tectonics and Mineral Exploration
This study presents an integrated aeromagnetic investigation of Kaduna State, northwestern Nigeria, to delineate subsurface structures and estimate magnetic source depths within the Nigerian Basement Complex. Twenty-one...
-
Assessment of Groundwater Quality, Contamination Risk, and Hydrogeochemical Characteristics Around Okitipupa Dumpsites, Southwestern Nigeria
Groundwater contamination from unmanaged dumpsites threatens water quality and public health in many developing countries. This study evaluated the physicochemical properties and contamination risk of groundwater around...
-
Halide-Induced Band Gap Modulation in RbPbCl3-XBrX Perovskites: Insights from a First-Principles Study
First-principles calculations based on density functional theory (DFT) as implemented in Quantum ESPRESSO were used to systematically investigate the structural and electronic properties of inorganic halide perovskites R...
-
Formation Energy and Phonon Dispersion of Halogen-Doped Rutile TiO2: First-Principles Investigation
This study presents a first-principles investigation of the formation energy and phonon dispersion of halogen-doped rutile TiO?. Calculations were performed using density functional theory (DFT) within the generalized gr...
-
First-principles Investigation of Structural, Electronic, Mechanical, Optical, and Thermodynamic Properties of Lead-Free KSrX3 (X = F, Cl, and Br) Halide Perovskites for UV Optoelectronic Applications
This study employed density functional theory (DFT) within Quantum ESPRESSO to investigate the structural, electronic, phonon, mechanical, optical, and thermodynamic properties of cubic KSrX? (X = F, Cl, Br) halide perov...
-
An Offline-First Low-Cost Smart Home Automation System Using Bluetooth and Android-Based Voice Control for Resource-Constrained Environments
The widespread adoption of Internet of Things (IoT)-based smart home systems has led to increasing reliance on cloud-dependent architectures that require stable internet connectivity. However, such dependence restricts d...
-
Development and Validation of a MeasurementInformed MATLAB/Simulink Harmonic Propagation Model for a Practical 33 kV Distribution Network
This study developed and validated a measurement-informed MATLAB/Simulink harmonic propagation model for a practical 33 kV distribution network using the Ungwan Boro feeder in Kaduna Metropolis, Nigeria, as the study net...
-
Screening-Level Radiological Risk Assessment of Natural Radionuclides in Jabi Lake Sediments Using RESRAD-Onsite: A Conservative ScenarioBased Assessment
Naturally occurring radioactive materials (NORMs) in lake sediments may contribute to human radiation exposure through multiple environmental pathways, making periodic radiological assessment important for environmental...
-
Risk Assessment and Uncertainty Analysis of Radon-222 Concentrations in Groundwater Within Abuja, Nigeria, Using Liquid Scintillation Counting
Radon-222 (222Rn) in groundwater is a potential source of internal radiation exposure through ingestion, particularly in regions where groundwater constitutes a major source of drinking water. This study presents an asse...
-
First-Principles Investigation of Alkaline-Earth Metal Co-Doped Hexagonal WO3 for Enhanced Near-Infrared Optical Response
The structural, thermodynamic, electronic, and optoelectronic properties of co-doped hexagonal tungsten trioxide (h-WO?) are investigated using Density Functional Theory (DFT) with the HSE06 hybrid functional and Density...
-
Crystallographic and Spectroscopic Analysis of Activated Carbon Derived from MicrowaveAssisted KOH Activation of Banana Peels
KOH-activated carbon was prepared from banana peel waste by microwave heating (800 W) for 10, 20, 30, and 40 min with a constant KOH/precursor ratio of 1:1. The effect of irradiation time on crystal order and surface che...
-
Factors Influencing Households Intention to Adopt Solar Photovoltaic Technology for Net Metering in Mzuzu City, Malawi
Adoption of solar photovoltaic (PV) technology is essential for the successful implementation of Malawi's newly introduced net-metering framework. However, evidence on urban household adoption intentions remains limited....
-
Design and Construction of an Ultrasonic Level Measurement Device Using Arduino Uno
Accurate and reliable level monitoring is essential in many industrial and scientific applications, including water storage, oil and gas processing, agricultural systems, and automated processes. Conventional contact-bas...