Issue 2, 2018
From the journal:

RSC Advances

Change in crystalline structure of W18O49 nanowires induced by X-ray irradiation and its effects on field emission

Junqing Wu, ORCID logo ab   Bo Wang,c   Futing Yi,c   Shaozhi Deng,a   Ningsheng Xua  and  Jun Chen*a  

* Corresponding authors

a State Key Lab of Optoelectronic Materials and Technologies, Guangdong Province Key Lab of Display Material and Technology, School of Electronics and Information Technology, Sun Yat-sen University, Guangzhou, People's Republic of China
E-mail: stscjun@mail.sysu.edu.cn

b Jiangxi Province Key Lab of Microstructure Function Materials, Jiujiang Key Lab of Novel Function Nanomaterials, School of Science, Jiujiang University, Jiujiang, People's Republic of China

c Institute of High Energy Physics, Chinese Academy of Sciences, Beijing, People's Republic of China

Abstract

W18O49 nanowires were synthesized by thermal evaporation, and the effects of X-ray irradiation on their crystalline structure, chemical composition, and field emission properties were systematically investigated. High-energy X-ray irradiation created nanoprotrusions on the surface of W18O49 nanowires and introduced crystalline slipping in the lattice. X-ray photoelectron spectroscopy results showed that the content of lattice oxygen increased and nitrogen was incorporated into the W18O49 nanowires after X-ray irradiation. Nevertheless, a stable and high current emission still could be obtained from the W18O49 nanowires after X-ray irradiation, with a slight increase in the threshold field from 6.4 to 7.9 MV m−1. The mechanism of the change in crystalline structure, chemical composition, and field emission performance of W18O49 nanowires induced by X-ray irradiation is discussed.

Graphical abstract: Change in crystalline structure of W18O49 nanowires induced by X-ray irradiation and its effects on field emission

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Article information

DOI
https://doi.org/10.1039/C7RA12791J
Article type
Paper
Submitted
26 Nov 2017
Accepted
14 Dec 2017
First published
03 Jan 2018
This article is Open Access
Creative Commons BY-NC license

RSC Adv., 2018,8, 752-760

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Change in crystalline structure of W18O49 nanowires induced by X-ray irradiation and its effects on field emission

J. Wu, B. Wang, F. Yi, S. Deng, N. Xu and J. Chen, RSC Adv., 2018, 8, 752 DOI: 10.1039/C7RA12791J

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