Issue 35, 2020

Electrical conduction and field emission of a single-crystalline GdB44Si2 nanowire

Abstract

The electronic transport and field emission properties of a single-crystalline GdB44Si2 nanowire are studied. The atomic structure and elemental composition of the GdB44Si2 nanowire are characterized by transmission electron microscopy (TEM) using atomic imaging, energy-dispersive X-ray spectroscopy (EDS), and electron energy-loss spectroscopic (EELS) mapping. The electrical conductivity of the single GdB44Si2 nanowire is in the range of 46.8–60.1 S m−1. The in situ TEM field emission measurement reveals that it has a low work function of 2.4 eV. To realize a converged electron emission, a field evaporation pretreatment was used to clean the emission surface and to make a sharpened tip. The field emission probe measurement results show that the electron emission from the sharp GdB44Si2 nanowire is converged to a single field emission spot and it has a work function of 2.6 eV which is in agreement with the in situ TEM measurement. The stability of field emission current is also very good with a fluctuation of 1.4% in 20 min. With a low work function and stable emission current, the GdB44Si2 nanowire shows great promise for field emission applications.

Graphical abstract: Electrical conduction and field emission of a single-crystalline GdB44Si2 nanowire

Article information

Article type
Paper
Submitted
22 Jun 2020
Accepted
24 Jul 2020
First published
04 Aug 2020

Nanoscale, 2020,12, 18263-18268

Electrical conduction and field emission of a single-crystalline GdB44Si2 nanowire

S. Tang, J. Tang, T. Chiu, J. Yuan, D. Tang, M. Mitome, F. Uesugi, Y. Nemoto, M. Takeguchi and L. Qin, Nanoscale, 2020, 12, 18263 DOI: 10.1039/D0NR04707D

To request permission to reproduce material from this article, please go to the Copyright Clearance Center request page.

If you are an author contributing to an RSC publication, you do not need to request permission provided correct acknowledgement is given.

If you are the author of this article, you do not need to request permission to reproduce figures and diagrams provided correct acknowledgement is given. If you want to reproduce the whole article in a third-party publication (excluding your thesis/dissertation for which permission is not required) please go to the Copyright Clearance Center request page.

Read more about how to correctly acknowledge RSC content.

Social activity

Spotlight

Advertisements