Ceramics International

Volume 42, Issue 8, June 2016, Pages 10021-10029

Fabrication of Mg-doped ZnO nanofibers with high purities and tailored band gaps

WeixuanZeng,XianfengYang,MinghuiShang,XiewenXua,WeiyouYang,HuilinHou,

https://doi.org/10.1016/j.ceramint.2016.03.105

Abstract

The tailored doping levels towards the band gap tunability are one of the challenges to push forward the potential application of one-dimensional (1D)ZnOnanostructuresin the opto/electricnanodevices. In present work, we reported the exploration of Mg-doped ZnOnanofibersviaelectrospinningof polyvinylpyrrolidone (PVP), Zn(CH3COO)2 (ZnAc) and Mg(CH3COO)2 (MgAc), followed bycalcinationin air. The resultant products were systematically characterized byX-ray diffraction(XRD),scanning electron microscopy(SEM), high-resolution transmission electron microscope (HRTEM), andX-ray photoelectron spectroscopy(XPS). Theoptical measurements(UV–vis) of the Mg-doped ZnO nanofibers suggested that the optical band gaps of the ZnO nanofibers could be tuned from 3.33 to 3.40 eV as a function of the Mg doing levels. This tunability of the band gap of ZnO nanofibers with an intentional impurity could eventually be useful for optoelectronic applications.