UV excited emission spectra of gadolinium aluminium garnet.

Gadolinium aluminum garnets (GAG) in recently times are examined for their application in enhancing the efficiency of photonic devices. A sequence of samples for gadolinium aluminum garnet (Gd₃Al₅O₁₂) was synthesized effectively using the sol–gel method. The prepared sample was sintered at various temperatures, but at 1100 °C pure phase developed was identified by X-ray diffraction, and luminescence properties were studied by several characterizations such as Fourier transform infrared spectroscopy (FTIR), UV–Vis spectroscopy, and fluorescence spectroscopy. XRD gave the confirmation of the phase formation of GAG, and analyses of FTIR were also coordinated with XRD results. Emission spectra corresponding to ⁶I_7/2,⁶D_9/2, and ⁶G_7/2 energy transition from state ⁸S_7/2 were determined for three UV excitations, i.e., 256 nm, 290 nm, and 391 nm, and show mixed color components on the chromaticity diagram. [ABSTRACT FROM AUTHOR]