1. Department of Physics and Marburg Centre for Quantum Materials and Sustainable Technologies, Semiconductor Photonics Group, Philipps-Universität Marburg, Renthof 7a, 35032 Marburg, Germany
2. Department of Physics, Faculty of Science, Ain Shams University, Cairo 11566, Egypt
3. Department of Physics and Marburg Centre for Quantum Materials and Sustainable Technologies, Semiconductor Spectroscopy Group, Philipps-Universität Marburg, Renthof 7a, 35032 Marburg, Germany
4. Department of Chemistry and Marburg Centre for Quantum Materials and Sustainable Technologies, Philipps-Universität Marburg, Hans-Meerwein-Straße 4, 35032 Marburg, Germany