Combustion synthesis, structural and photoluminescent investigations of Eu3+ activated crystalline Ba2BiV3O11 nanomaterials for multifunctional applications

Abstract

Nanocrystalline Ba2BiV3O11 phosphor activated with lanthanide ion (Eu3+) has been successfully developed via a solution combustion approach. Various characterization techniques were implemented to explore the crystal structure, morphological behavior, photoluminescence, and chromatic aspects of Eu3+: Ba2BiV3O11 nanophosphors. Rietveld refinement was exercised to attain the phase purity and various crystallographic parameters. Transmission Electron Microscopy (TEM) technique was employed to analyze the crystallite size of the developed nanocrystals which is also in agreement with the size calculated from Scherrer formalization and W-H (Williamson-Hall) plot. Morphological behavior was studied with the help of Scanning Electron Microscopy (SEM) measurements. The most intense peak centered at 622 nm (5D0 → 7F2) in emission spectra was noted for Eu3+: Ba2BiV3O11 nanophosphors under 348 nm excitation. Kubelka-Munk function computed the Egap for the host along with the optimized sample and the outcomes evolved as 3.47 eV and 3.41 eV, respectively. Auzel’s model was executed to attain the radiative lifetime (1.3467 ms) for 5D0 electronic state. The CIE coordinates (x = 0.5990, y = 0.4003), CCT values (1710 K), quantum efficiency (87 %), and emission of bright red light indicate the promising behavior of Ba2Bi0.9Eu0.1V3O11 nanophosphor to use in the imaging applications, wLEDs, temperature sensing, and solid-state lighting (SSLs) appliances.