Jump to main content
Jump to site search

Issue 13, 2015
Previous Article Next Article

Hierarchical cupric oxide nanostructures on copper substrate for cold cathode emission: an experimental venture with theoretical correlation

Author affiliations

Abstract

In this paper we report a facile route for the synthesis of controlled CuO nanoarchitectures directly grown on a copper substrate by a one-step simple chemical route with varying concentration of non-ionic surfactant PEG-6K. The phase purity and degree of crystallinity of the as-developed nanostructures were systemically investigated by X-ray diffraction, X-ray photoelectron spectroscopy and high-resolution transmission electron microscopy (HRTEM). A detailed analysis by field emission scanning electron microscopy confirmed the uniformity of the prepared nanostructures on the substrates. These architectures displayed substantial improvement of field emission properties with respect to other structures of CuO reported so far. A particular nanostructure (needle) among them showed a down shift of the turn-on field to 2.2 V μm−1 coupled with a good enhancement factor (β) ∼516, which are deemed as sufficient for electron emission based applications such as field emission displays and vacuum nanoelectronic devices. The origin of this efficient field emission from CuO nanoarchitectures, were probed computationally by investigating the local electric field distribution through finite element based simulation method using the ANSYS Maxwell simulation package.

Graphical abstract: Hierarchical cupric oxide nanostructures on copper substrate for cold cathode emission: an experimental venture with theoretical correlation

Back to tab navigation

Supplementary files

Publication details

The article was received on 24 Sep 2014, accepted on 16 Feb 2015 and first published on 17 Feb 2015


Article type: Paper
DOI: 10.1039/C4DT02944E
Author version available: Download Author version (PDF)
Citation: Dalton Trans., 2015,44, 6098-6106
  •   Request permissions

    Hierarchical cupric oxide nanostructures on copper substrate for cold cathode emission: an experimental venture with theoretical correlation

    S. Das, S. Saha, D. Sen, U. K. Ghorai and K. K. Chattopadhyay, Dalton Trans., 2015, 44, 6098
    DOI: 10.1039/C4DT02944E

Search articles by author

Spotlight

Advertisements