Incitement of sodium ions on structural and optical properties of dysprosium doped neodymium oxide

Abstract

Luminescence reveals from nano gravel crimps of sodium ion incorporated dysprosium doped neodymium oxide have been synthesized by the solution combustion method. A-type hexagonal crystalline structure is recognized by powder X-ray diffraction. Visual surface morphology features of nano gravels are analyzed by the field emission scanning electron microscopy. Energy dispersive X-ray spectroscopy approved the existence of Na, Nd, O, C and Dy elements. X-ray photoelectron spectroscopy data describes the binding energy signature of elements ensued in the sample as Nd 4d5/2, 4p3/2, 3d5/2, 3d3/2, O 1s, C 1s, Na 1s, and Dy 4d. The diffused reflectance spectrum analysis is used to estimate the optical energy gap. Fourier transformed-infrared spectrum recognized NdO bond. Raman spectrum peaks are assigned to Fg and combination of Ag + Eg modes and it describes A-type hexagonal crystalline phase of the sample. Photoluminescence emissions are observed in the region of blue and red as deconvoluted emission peaks at 323, 375, 438, 492, 542, 623, 665, 690 and 743 nm. Thermoluminescence glow peaks explored as 100 °C and 180 °C with the respective activation energies and the frequency factors are 1.33 eV, 97 MHz and 0.325 eV, 4.2 kHz.