1. Center of Materials Technology and Photonics & Electrical Engineering Department, Technological Educational Institute (TEI) of Crete, Heraklion 71004 Crete, Greece
2. Department of Mineral Resources Engineering, Technical University of Crete, Chania, 731 00, Crete, Greece
3. Department of Chemistry, University of Crete, P.O. Box 2208, 710 03 Heraklion Crete, Greece
4. Institute of Electronic Structure and Laser, Foundation for Research and Technology - Hellas, P.O. Box 1527, 711 10 Heraklion
Crete, Greece
5. Department of Materials Science
and Technology, University of Crete, Heraklion, 710 03 Crete, Greece