Dr. A. Djelloul has completed his HDR, PhD and Magister in physics from University of Oran (USTO-MB), Algeria. Currently he is working as a Research Director in Research Center in Semiconductors Technology for Energetic (CRTSE), Algiers, Algeria. He has wide experiences in both Research and Academia concerning "Material Characterization, Nanomaterials, Thin Films and Nanotechnology, Thin Film Deposition, Semiconductor, Solar cells, Photovoltaics, Thin Films Synthesis, Silicon, Laser, Deposition Methods ...». He has published more than 26 articles and presented many papers in reputed national and international conferences (50 conference proceedings). He is a member in many scientific projects, several academic societies and organizations. He is the Principal Guest Editor of several Special Issues in International Journal of Current Materials Science. He is also an Associate Editorial Board Member, Editorial Board as Section Editor, Editorial Board Member and Reviewer of many international journals. From 2014 to 2023, he had been invited to review over 300 articles.