Mohammad Shah Jamal

Photosynthetic microbial fuel cells (PMFCs) represent an emerging class of bio-electrochemical systems capable of converting organic pollutants into electricity through microbial catalysis.

A low-voltage electrophoretic deposition (EPD) technique was applied to fabricate thin films of zinc oxide and graphene oxide (GO) nanocomposites derived from lube oil waste.

Controlled structural and morphological tuning of LiNi _0.5 Co _0.2 Mn _0.3 O2 using a mixed-solvothermal method. Created with Biorender.com.

Mn-doped NiO nanoparticles (NPs), represented as Ni1-xMn_xO with x values of 0.00, 0.02, 0.04, 0.06, and 0.08, were synthesized using a chemical precipitation process. These NPs were comprehensively analyzed for their structural, optical, and electrical properties, along with their surface morphology and elemental composition. X-ray Diffraction (XRD) confirmed the single-phase cubic crystal structure and revealed a reduction in crystallite size from 15.26 nm to 10.38 nm as Mn doping increased. Field Emission Scanning Electron microscopy (FE-SEM) determined the average particle sizes ranging from 26.03 nm to 23.30 nm. The optical properties, assessed by UV-Visible Spectroscopy (UV-Vis), revealed a widening of the bandgap from 3.49 eV to 4.10 eV with increasing Mn doping, suggesting tunable optical characteristics. X-ray Photoelectron Spectroscopy (XPS) confirmed the presence of nickel (Ni), oxygen (O), and manganese (Mn) within the NPs. The highest mobility, 1.31 ± 0.03 × 10³ cm²/Vs, was observed in the 6 wt% Mn-doped NiO NPs thin film, as determined by Hall measurements. To assess their practical utility, SCAPS-1D simulation was employed, demonstrating the potential of Mn-doped NiO NPs as a hole transport layer (HTL) in perovskite solar cells (PSCs). The enhanced electrical and optical properties, combined with structural tunability, highlight Mn-doped NiO as a promising material for advanced optoelectronic applications. This study provides valuable insights into the development of efficient and stable solar cells, offering a pathway to optimize material design for improved performance in photovoltaic applications.

Nickel (Ni) doped Mn₃O₄ nanoparticles (NPs) were synthesized by a quick and facile chemical precipitation technique to investigate their performance in the degradation of methylene blue (MB) in the absence of light.

The optoelectronic properties of Sn-doped ZnO nanoparticles.