Versatile properties of BaGd2ZnO5:Ho3+nanomaterial: Compatible towards solid state lightening, anti-counterfeiting and biomedical applications

For the first time, BaGd2ZnO5:Ho3+ (1-11 mol %) nanophosphor (BGZO:Ho3+ NPs) is prepared using combustion synthesis by utilizing glycine as fuel. Phase purity is evaluated using Rietveld refinement and X-ray diffraction. Through crystallographic analysis, the orthorhombic symmetry type with Pbnm (62) space group has been determined. The size of the non-uniformly aggregated particles examined by morphological analysis ranges from 37 to 53 nm. A significant photoluminescence (PL) emission observed at 551 nm (green colour) for the 5S2+5F4 -> 5I8 transition. Due to non-radiative energy transfer via cross-relaxation, concentration quenching is observed beyond 9 mol %. The chromaticity coordinates of BGZO:9Ho3+ NPs is (x = 0.2870, y = 0.7016) sug-gested that it would be suitable for green emission in white light emitting diode applications. In this case, a flexible light-emitting polydimethylsiloxane (PDMS) material serves as the framework for an anti-counterfeiting (AC) technique. Thrombosis is considered as a major threat to the society as it leads to death and disability. Despite, several risk factors oxidative stress has been considered as the key contributor of thrombosis. The most promising NPs were subsequently investigated for their ability to reduce oxidative stress and thrombosis. It is perceived that NPs demonstrated antioxidant properties by scavenging DPPH (2, 2-diphenyl-1-picrylhydrazyl). In addition, the phosphor inhibited platelet aggregation induced by Adenosine di-phosphate (ADP). The over-all results clearly indicated that BGZO:Ho3+ NPs opens up a new avenue in forensic applications.