“…At present, many researchers prefer tungstate-based materials when developing phosphor materials for different applications such as phosphor-converted LEDs (PcLEDs), [13] latent fingerprinting imaging, [11] and optical thermometers. [14] Double perovskite (DP)-structured tungstate (A 2 BWO 6 ) compounds have been explored experimentally as well as theoretically since the 1950s. The simplicity of their crystal structure and their diverse physical properties, such as ferroelectric, dielectric, [21,22,32] ferromagnetic, [15,23] photocatalytic, [26] photoluminescence (PL), [17,18,35] and magnetoresistance properties, [33] continue to fascinate researchers to explore DP-structured tungstate for different applications.…”