Photo-Luminescence study of Ba3Gd1-x(BO3)3 : X Ce3+ phosphor

The polycrystalline powder sample of Ce3+ activated barium gadolinium borate phosphors Ba3Gd1-x(BO3)3 : X Ce3+(0.01 ≤ X ≤ 0.06 ) are prepared by solution combustion. Formation of phosphor in desired crystalline phase confirmed by powder XRD characterization & FTIR. A SEM image shows the irregular grains with average particle size 2.5μm. The excitation spectrum consists of a single broad absorption band from 200 to 400 nm with the prominent excitation peak at 343 nm [2F5/2 to 5D1 of Ce3+ ions]. Strongest emission peak of 488nm [5D1→ 2F5/2] and weak of 501nm [5D1→ 2F7/2] wavelength which is of blue light is observed at 343nm UV light excitation. Ba3Gd1-x(BO3)3 : X Ce3+ phosphor emits blue light under UV excitation. Maximum PL emission takes place at 3 mole percentage of Ce3+. Concentration quenching for Ce3+ ions is studied. Hence Ba3Gd1-x(BO3)3 : X Ce3+ is new UV excited blue emitting phosphor useful for UV/Blue chip WLEDs.