Presently, green route synthesis compared with conservative chemical and physical synthesis could be a preferable synthesis route due to environmentally friendly conditions, due to their less speed of metal reduction, it does not require further stabilizing agents, because extracts themselves act as stabilizing and capping agents and the nanopowders, prepared by biological methods. Rare earth (RE) doped lanthanum oxyfluorides (LaOF) have been widely used in high performance luminescent devices, magnets, catalysts and other functional materials based on the electronic, optical and chemical...