Preparation of High Quality Potassium Niobate Nanowires by Laser Induced Method and Its Luminescence Properties

Abstract

Under normal temperature and pressure conditions, potassium niobate nanowires with uniform diameter and good crystallinity were prepared by laser-induced method using KOH and Nb2O5 as raw materials. The samples were characterized by XRD, SEM, Raman and UV-Vis, the light absorption and photoluminescence properties of potassium niobate nanowires were studied. The results show that the chemical formula of laser-induced samples is KNb3O8 (the space group is Pmmm (47), which is orthorhombic system). The growth mechanism of nanowires is the SLS mechanism. The band gap of the prepared nanowires is 2.84eV, there is a strong blue emission peak at 436nm.

Keywords

• laser induced
• potassium niobate nanowire
• growth mechanism
• band gap
• photoluminescence