Luminescent properties of PEG-added nanocrystalline YVO4:Eu3+ phosphor prepared by a hydrothermal method

Spherical shape with fast decaying property of solvothermally grown (Y,Gd)BO3:Eu3+ nanophosphor

“…Various techniques have been developed to synthesize shape-controlled lanthanide orthoborate and vanadate phosphors, such as sol-gel, spray pyrolysis, hydrothermal, and so on. Among these approaches, the hydrothermal process has already been widely applied in the preparation of various nanocrystalline phosphor compounds [6][7][8][9]. However, there have been limited reports of the preparation of monodispersion with morphology-controlled (Y,Gd)BO 3 :Eu 3 þ phosphor because most rare-earth orthoborate crystals have a tendency toward anisotropic growth and the formation of aggregates via the proposed synthesis methods, resulting in a sheet like morphology during the hydrothermal growth process [10,11].…”

Facile synthesis of lanthanide vanadates and their luminescent properties

“…The narrow band at 617 nm is the electric dipole transition with Eu 3+ ions 5 D 0 -7 F 2 . The band at 595 nm corresponds to the transition of Eu 3+ ions 5 D 0 -7 F 1 [15][16][17][18]. The peaks at 540 and 700 nm were corresponding to the transitions of Eu 3+ ions 5 D 1 -7 F 1 and 5 D 0 -7 F 4 .…”

Structures and luminescent properties of single-phase La 5.90−x Ba 4+x (SiO 4 ) 6−x (PO 4 ) x F 2 :0.10Ce 3+ phosphors

“…Making a coating of three color (blue, green, and red) emitting phosphors on the top of NUV chip to obtain w-LEDs has attracted a large amount of interest. The rare earth ions play an important role in display and lighting fields for their 5d-4f or 4f-4f transitions [5,6], among which Ce 3 þ is a kind of important activator ions for novel phosphors with a wide range of emission due to the transition between the 4f 1 ground state and the crystal field components of the 5d excited state configuration [7,8].…”