Preface Luminescence of Metastable ZnO Nanostructures Photoluminescence Characterisation of Luminescence Materials: Halosulphate Phosphors Role of Mn Concentration in Luminescence of Nanocrystalline ZnS Low Temperature Photoluminescence Analysis on Properties of CdZnTe Bulk Crystals Photoluminescence of Si Nanocrystals Embedded in SiO2 Towards an Insight on the Photoluminescence of Disordered Titanates from a Joint Experimental and Theoretical Analysis Mechanisms Behind Photoluminescent Emission in Scheelite Structures Microplasma Synthesis of Tunable Photoluminescence Si Quantum Dots Recent Development of Luminescent Materials Prepared by the Sol-Gel Process Enhanced Photoluminescence of Rare-Earth Activators in Sol-Gel Derived SiO2 by Energy Transfer from ZnO Nanoparticles and Co-Activators Studies of Photoluminescence Spectra of InGaN/GaN Heterostructures Index.