Deposition and properties of CdTe nanowires prepared by template replication

Ionut Marius Enculescu 1Marian Sima 1Monica Enculescu 1Mihaela Enache 1Lucian Ion 2Stefan Antohe 2Reinhard Neumann 3

1. National institute for Materials physics (NIMP), Atomistilor 105 bis, Bucharest 77125, Romania
2. University of Bucharest, Faculty of Physics, Bucharest-Magurele mg-11, Bucharest 76900, Romania
3. Gesellschaft für Schwerionenforschung (GSI), Planckstraße 1, Darmstadt 64291, Germany


CdTe nanowires were prepared by electrochemical deposition in nanoporous polycarbonate membranes. The method offers some very important degrees of freedom, i.e. the possibility to choose the desired density of nanopores by selecting the appropriate heavy ion irradiation fluence and the desired size and shape of the nanopores by using the appropriate etching conditions. Thus one can employ templates with the desired characteristics: high pore density for measurements of optical, structural or morphological characteristics of the nanowires and low pore density membranes for transport characterization.

The present report deals with the influence of the preparation conditions on the properties of CdTe nanowires. Thus the influence of parameters such as deposition potential or temperature on morphological or structural properties were investigated. Moreover, differences between wires deposited at constant potential and in a pulsed regime were emphasized.

Transport properties were also investigated, special attention being paid to metal semiconductor contacts properties at nanoscale.

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Presentation: Oral at E-MRS Fall Meeting 2006, Symposium F, by Ionut Marius Enculescu
See On-line Journal of E-MRS Fall Meeting 2006

Submitted: 2006-05-12 09:52
Revised:   2009-06-07 00:44
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