Sb-doped SnO2 wire: highly stable field emitter

Bhise, Ashok B. ; Late, Dattatray J. ; Walke, Pravin S. ; More, Mahendra A. ; Pillai, Vijayamohanan K. ; Mulla, Imtiaz S. ; Joag, Dilip S. (2007) Sb-doped SnO2 wire: highly stable field emitter Journal of Crystal Growth, 307 (1). pp. 87-91. ISSN 0022-0248

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Field emission investigations of a single Sb-doped SnO2 wire synthesized by thermal evaporation have been carried out in conventional field emission geometry under ultrahigh vacuum. An onset field required to draw a current of 1 nA has been reproducibly observed to be 9.5×103 V/μm. A current density of 5.88×103 A/cm2 has been drawn with an applied field of 2×104 V/μm. The Fowler-Nordheim plot, obtained from the current-voltage (I-V) measurements, shows linear nature in accordance with the quantum mechanical tunneling phenomenon. The field enhancement factor has been estimated to be 26,500 cm-1, indicating that the emission is from the nanometric features of the Sb-doped SnO2 wire. The current-time (I-t) measurement shows high current stability without severe deviations from the initial set value of 1 μA.

Item Type:Article
Source:Copyright of this article belongs to Elsevier Science.
Keywords:A1. Antimony; A1. Field Emission; A1. Field Enhancement Factor; A1. Wires; B1. SnO2
ID Code:68940
Deposited On:08 Nov 2011 04:42
Last Modified:08 Nov 2011 04:42

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