Synthesis, field emission of various ZnSe nanostructures by hydrothermal methods. (1st June 2017)

• Record Type: Journal Article
• Authors: Gao, Zhiyong; Xue, Shaolin; Yu, Qi; Xie, Pei; Wang, Youya; Feng, Hange; Li, Lingwei
• Is Part Of: Micro & nano letters. Volume 12:Number 6(2017)
• Page Start: 382
• Page End: 385
• Publication Date: 2017-06-01
• Subjects: zinc compounds -- II‐VI semiconductors -- wide band gap semiconductors -- field emission -- nanofabrication -- semiconductor growth -- nanostructured materials -- crystal growth from solution -- crystal orientation -- X‐ray diffraction -- scanning electron microscopy; field emission -- nanostructures -- hydrothermal methods -- diethanolamine -- morphologies -- structural property -- crystal orientation -- X‐ray diffractometry -- XRD -- scanning electron microscopy -- cubic crystal nanomaterials -- field enhancement factor -- turn‐on electric field -- temperature 200 degC -- time 24 h -- ZnSe; Nanotechnology -- Periodicals; Nanostructures -- Periodicals; Microtechnology -- Periodicals; 620.5
• DOI: 10.1049/mnl.2016.0808
• Languages: English
• ISSNs: 1750-0443

Abstract

Abstract : In this work, grass‐like, needle‐like and chrysanthemum‐like ZnSe nanostructures have been prepared by hydrothermal method at 200°C for 24 h successfully. With different amounts of diethanolamine, various morphologies of ZnSe formed. The structures, morphologies and crystal orientation of as‐synthesised ZnSe nanostructures were characterised by X‐ray diffractometer (XRD) and scanning electron microscope. The experiment result of XRD indicated that the structures of all as‐synthesised ZnSe nanomaterials were cubic crystal. The field emission (FE) properties of as‐synthesised samples were tested and the results revealed that the FE properties were influenced by the morphologies significantly. The FE measurement showed that the chrysanthemum‐like ZnSe nanostructures had the best FE properties with a high field enhancement factor of 4328 and a low turn‐on electric field of 3.4 V μm −1 among all the as‐synthesised ZnSe nanostructures. The reaction mechanism of various morphologies ZnSe was also explained as follow.