Dr. Bouraoui Ilahi is currently working as Assistant Professor in Department of Physics and Astronomy Faculty of Sciences, King Saud University Riyadh, Saudi Arabia. He has completed his PhD from Tunis University, Tunisia. Previously he was appointed as Assistant at University of Tunis/ Tunisia and University of Monastir, Tunisia, Associate Professor at University of Carthage/ Tunisia, Visiting Professor at University of Sherbrooke, Canada. His area of expertise includes Chemical Beam Epitaxy (CBE)of Multijunction Solar Cells and intermediated Band Solar Cells, CBE growth of InGaAs(P)/InP for THz application, Molecular Beam Epitaxy Growth and Post Growth Processing of Semiconductor Quantum Nanostructures: Quantum Well/ Wires/ Dots, High Resolution X Ray Diffraction, Optical Characterization: Photoluminescence, Photoreflectance, Photoluminescence of Excitation, time resolved Photoluminescence, and Numerical modeling: carrier’s confinement and charge transfer. He is also serving as reviewer for Nanotechnology, New journal of Physics, Journal of Physics, Applied Physics, Applied Physics Letters, Journal of Applied Physics, several Silence direct journals. He has 44 publications in journals. He is editor for Physical Sciences, Academia and member of editorial board in Applied Physics Research, Nanoscience and Nanotechnology Research.