Lyubomyr Nykyruy has a Ph.D. in Physical Science and is a Professor and the Head of the Department of Physics and Chemistry of Solids, Vasyl Stefanyk Precarparhian National University (Ivano-Frankivsk, Ukraine). Dr. Nykyruy is the Editor-in-Chief of the Journal ‘Physics and Chemistry of Solid State’ (ISSN 1729-4428), and a guest editor for Materials Today: Proceeding (special issues to the ICPTTFN Conferences). Dr. Nykyruy's research areas are related to semiconductor material science, such as charge carrier scattering and features of the dynamics of electron and phonon subsystems, and materials for photovoltaic and thermoelectric application (bulk materials, thin films, and nanosystems).