Open AccessSynthesis, field emission of various ZnSe nanostructures by hydrothermal methods
Author(s) -
Gao Zhiyong,
Xue Shaolin,
Yu Qi,
Xie Pei,
Wang Youya,
Feng Hange,
Li Lingwei
Publication year - 2017
Publication title -
micro and nano letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.25
H-Index - 31
ISSN - 1750-0443
DOI - 10.1049/mnl.2016.0808
Subject(s) - diffractometer , hydrothermal circulation , field electron emission , materials science , nanostructure , nanomaterials , field emission microscopy , nanotechnology , scanning electron microscope , hydrothermal synthesis , crystal (programming language) , diethanolamine , transmission electron microscopy , photoluminescence , crystal structure , chemical engineering , diffraction , crystallography , optoelectronics , electron , chemistry , optics , composite material , programming language , physics , quantum mechanics , computer science , engineering
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.