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Issue 26, 2013
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Enhanced field emission characteristics in metal-coated Si-nanocones

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Abstract

Metallic gold (Au) and platinum (Pt) thin films were deposited on silicon nanocones (Si-NCs) by sputtering to elucidate the effects of work function and conductivities on the field electron emission characteristics of surface-modified Si-NCs. The results showed that for Pt/Si-NCs and Au/Si-NCs, although the turn-on field defined at a corresponding current density of 10 μA cm−2 only improved from 4.20 V μm−1 for bare Si-NCs to 3.65 and 2.90 V μm−1, respectively, the emission current density measured at 5.00 V μm−1 was enhanced by orders of magnitude, reaching 1.82 mA cm−2 for Au/Si-NCs. Compared to those obtained from various surface-modified Si-nanostructures, such as ZnO/Si-nanopillars and ferroelectrics/Si-nanotips, the current results represent an interesting alternative route for producing surface-modified Si-NCs that might be useful for optical and electronic applications.

Graphical abstract: Enhanced field emission characteristics in metal-coated Si-nanocones

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Publication details

The article was received on 03 Mar 2013, accepted on 25 Apr 2013 and first published on 26 Apr 2013


Article type: Paper
DOI: 10.1039/C3CP50948F
Citation: Phys. Chem. Chem. Phys., 2013,15, 10761-10766

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    Enhanced field emission characteristics in metal-coated Si-nanocones

    Y. Chang, P. Kao, H. Tai, H. Wang, C. Lin, H. Lee and J. Juang, Phys. Chem. Chem. Phys., 2013, 15, 10761
    DOI: 10.1039/C3CP50948F

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