Cletus Olisenekwu

Temperature-Dependent Study of Optical, Electrical, and Structural Properties of Gadolinium-Doped Zirconium Sulphide Thin Films Fabricated Via Electrostatic Spray Deposition Technique for Optoelectronic Applications

Cletus Olisenekwu, Samuel Oghenemega Shaka, Oyibo Dafe Precious, Imosobomeh L. Ikhioya & Raceforth Atori · Asian Journal of Research and Reviews in Physics · 2025

This study investigates the structural, optical, morphological, and electrical properties of gadolinium-doped zirconium sulphide (ZrS/Gd) thin films created using the Electrostatic Spray Deposition (ESD) method with respect to the effects of deposition temperature. Thin films dep...

Open access Research Article 10.9734/ajr2p/2025/v9i3197

Influence of Molybdenum (Mo) Doping on the Structural, Optical, and Electrical Characteristics of Zirconium Oxide (ZrO2) Nanostructures for Optoelectronics and Photovoltaic Applications

Samuel Oghenemega Shaka, Cletus Olisenekwu, Ogemuno Ufuoma Mayman, Akpevweoghene Obunegbe, Ugochukwu Success Arinze & Timothy Victor · Asian Journal of Research and Reviews in Physics · 2026

This study investigated the influence of molybdenum (Mo) doping on the structural, optical, morphological, and electrical properties of zirconium oxide (ZrO2) nanostructured thin films for optoelectronic and photovoltaic applications. Mo-doped ZrO2 thin films were deposited on fl...

Open access Research Article 10.9734/ajr2p/2026/v10i3231

Effect of High-temperature (>320 °C) Thermal Annealing on Electrochemically Deposited Cu₂ZnSnS₄ (CZTS) Thin Films for Photovoltaic and Optoelectronic Applications

Oyibo Obed, Omamoke O. E. Enaroseha, Cletus Olisenekwu, Osiele O. Mike & Arthur Ekpekpo · Asian Journal of Research and Reviews in Physics · 2026

This study investigated the effect of high-temperature thermal annealing on the structural, optical, morphological, and electrical properties of electrochemically deposited Cu₂ZnSnS₄ (CZTS) thin films for photovoltaic and optoelectronic applications. CZTS thin films were deposite...

Open access Research Article 10.9734/ajr2p/2026/v10i3239

Experimental Evaluation of PMD Effects in NRZ and QAM-modulated High-speed Optical Systems in Abuja, Nigeria

Oyibo Dafe Precious, Samuel Oghenemega Shaka, Agbosa Tobore Roseline, Cletus Olisenekwu & Ikoko Precious · Physical Science International Journal · 2025

This study presents an experimental evaluation of Polarization Mode Dispersion (PMD) effects on high-speed optical communication systems in Abuja, Nigeria, using Non-Return-to-Zero (NRZ) and Quadrature Amplitude Modulation (QAM) formats over single-mode fiber. Tests were conducte...

Open access Research Article 10.9734/psij/2025/v29i5898