Low temperature growth of crystalline AlQ/sub 3/ nanowires from amorphous nanoparticles

A new method to form 1D nanostructure of tris-(8-hydroxyquinoline) aluminum (AlQ/sub 3/) has been demonstrated. This method is a one-step heating process at low temperatures to transform AlQ/sub 3/ amorphous nanoparticles into crystalline nanowires. AlQ/sub 3/ exhibits a highly electroluminescent efficiency and an anisotropic crystallographic nature. Appropriate heating provides a suitable condition for the molecules easily adopting a favorable configuration for the 1D growth. From the XRD analysis, /spl alpha/ phase of AlQ/sub 3/ is formed after heating. Higher intensity of photoluminescence (PL) and a blue shift after heating are also illustrated.