Chapter I Eu3+-activated red phosphors for white light-emitting diodes 1 1.1 Eu3+-activated double molybdates red phosphors for near-UV LED chips 1 1.1.1 Introduction 1 1.1.2 Preparation method 2 1.1.3 Structures, morphologies, PL properties and applications 3 1.2 Eu3+-activated double tungstates red phosphors for the near-UV LED chips 42 1.2.1 Introduction 42 1.2.2 Preparation method 42 1.2.3 Structures and PL properties 42 1.3 Eu3+-activated tetra-molybdates/tungstates red phosphors for the near-UV LED chip 48 1.3.1 Introduction 48 1.3.2 Preparation method 48 1.3.3 Structures, morphologies, PL properties and applications 49 1.4 Eu3+-activated other inorganic hosts 65 1.4.1 LaBSiO5 co-doped with Eu3+, Al3+ 65 1.4.2 Y2O2S:Eu3+ nanocrystals prepared by the molten salt synthesis 70 1.4.3 Y2O3:Eu3+ prepared by mimicking wood tissue 74 ����