Synthesis, structural and luminescence properties of Dy 3 + activated GdAlO 3 phosphors by a solid state reaction method under a N 2 atmosphere

Abstract

Dysprosium (Dy 3 +) ion-doped GdAlO 3 nanophosphors were fabricated by using a high temperature solid state reaction method. X-ray diffraction measurements were used to investigate the phase and crystal size of these phosphors. The morphology of the powder was observed by scanning electron microscopy. The band structure of the phosphor was determined by recording the UV absorption spectra and Tauc plot. The optical behaviour of the phosphors was determined by measuring their photoluminescence (PL) spectra. The PL spectra show characteristic blue (489 nm) and green (567 nm) emissions corresponding to the energy level transitions of Dy 3 +.