1. Department of Chemistry, Bar-Ilan University, Ramat-Gan, 52900, Israel, Department of Inorganic and Analytical Chemistry, The Hebrew University of Jerusalem, 91940, Israel, Laboratoire de Physico-Chimie des Materiaux Luminescents, Université Claude Bernard-Lyon 1, UMR 5620 CNRS, France, and Physics and Geology Groups, The Open University of Israel, 16 Klausner Street, Tel-Aviv, 61392, Israel