Prof. Mirosława Kępińska works at the Institute of Physics–Centre for Science and Education, Silesian University of Technology in Katowice, Poland. She is the Guest Editor of the Special Issue “Advances in Photoelectric Materials: Preparation, Properties, and Applications” in MDPI. Her research interests mainly focus on photonic crystals, nanomaterials, semiconductors, optical spectroscopy, spectrogoniometry, and optical parameters. Her scientific output includes 48 publications in various journals with an h-index of 12 (Scopus, January 2024).