Sovannary Phok et al 2007 Nanotechnology 18 475601 doi:10.1088/0957-4484/18/47/475601
Sovannary Phok, Suresh Rajaputra and Vijay P Singh
Show affiliationsA simple template assisted approach for fabricating I–III–VI semiconductor nanowire arrays is presented. Vertically aligned arrays of CuInSe2 (CIS) nanowires of controllable diameter and length were synthesized by pulse cathodic electrodeposition from a novel acidic electrolyte solution into anodized alumina (AAO) templates, followed by annealing at 220 °C in vacuum. Scanning electron microscopy revealed that the nanowires were dense and compact. Depending on the dimensions of the starting AAO template, the diameters ranged from 5 to 40 nm and the lengths ranged from 600 nm to 5 µm; the grain size was estimated to be less than 5 nm. The composition of the nanowires was analyzed by energy dispersive x-ray (EDX) spectroscopy, and was found to be close to stoichiometric CuInSe2 within the limit of the resolution of the EDX technique. High resolution transmission electron microscopy and x-ray diffraction revealed high purity CuInSe2 nanowires with a preferred [112] orientation.
61.46.-w Structure of nanoscale materials
82.45.Qr Electrodeposition and electrodissolution
81.16.-c Methods of nanofabrication and processing
81.07.-b Nanoscale materials and structures: fabrication and characterization
Issue 47 (28 November 2007)
Received 17 July 2007, in final form 21 September 2007
Published 17 October 2007
Sovannary Phok et al 2007 Nanotechnology 18 475601
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