An efficient synthesis of trivalent erbium activated BaYZn3AlO7 nano-sized phosphors for illumination purpose

Abstract

Nanocrystalline BaY1−xErxZn3AlO7 (x = 0.01–0.05) phosphors are derived via solution combustion synthesis. Williamson-Hall plot evaluated crystallite size (86.12 nm) and micro strain (0.00143) of the optimized sample. TEM study validates the fabricated particles size in nano-range. Under excitation upon near ultraviolet source (381 nm), emissive peaks are identified at 527 nm (2H11/2→4I15/2) and 566 nm (4S3/2→4I15/2). CIE color coordinates proved emanation in the yellowish-green section. The energy band gap, refractive index and CCT values for optimum nanosample are found to be 4.66 eV, 1.77 and 5416 K respectively. All results indicate that BaY1−xErxZn3AlO7 nanophosphors possess ample applications in WLEDs.