Synthesis of ZnSnO_3 nanocubes and thin film fabrication of (ZnSnO_3/PMMA) composite through electrospray deposition

摘要

A composite of zinc stannate (ZnSnO_3) nanocubes and poly(methyl methacrylate) (PMMA) has been prepared and deposited on a flexible substrate polyethylene terephthalate (PET) through electrospray deposition (ESD). This fabrication technique has been found very effective for deposition of this composite as thin film. ZnSnO_3 is an inorganic biocompatible and piezoelectric material while PMMA is a transparent and durable organic polymer material. ZnSnO_3 naocubes have been synthesized via an aqueous solution method and ZnSnO_3/PMMA composite has been deposited as thin film on PET through ESD. The average layer thickness of the as deposited ZnSnO_3/PMMA composite film on PET was found to be 149 nm. Morphological and structural characterization of ZnSnO_3 . nanocubes through FESEM and XRD showed its size uniformity and crystalline nature. The size of the ZnSnO_3 nanocubes was estimated by FESEM analysis which was around 50-70 nm. The chemical composition has been investigated with the help of FTIR and Raman spectroscopy. The optical characterization of as deposited ZnSnO_3/PMMA composite film through UV/Vis spectroscopy showed an average transmittance of around 92 % and electrical characterization exhibited resistivity of approximately 50 × 10~5 Ω cm. This dielectric nature of ZnSnO_3/PMMA composite film indicates that this composite material can be employed as dielectric layer in printed electronics.