1. Crystal Growth Lab, Materials Department 6 (i-MEET), Friedrich-Alexander University Erlangen-Nürnberg (FAU), Martensstr. 7, Erlangen 91058, Germany
2. CNR-IMM, Sezione di Catania, Strada VIII 5, Catania 95121, Italy
3. LPE S.P.A., Sedicesima Strada, Catania 95121, Italy