Gautam, Ujjal K. and Gundaih, Gautam and Kulkarni, G. U. (2005) Scanning tunneling microscopy and spectroscopy of Se and Te nanorods. SOLID STATE COMMUNICATIONS, 136 . pp. 169-172.
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Se and Te nanorods obtained by a self-seeding solution growth process have been examined by scanning tunneling microscopy and spectroscopy (STM/STS). The diameters of the rods, as revealed by STM images were in the range of 10-60 nm, with aspect ratios of 10-20. The I-V data of the Se and Te nanorods exhibit band gaps of ∼1.3 and ∼0.4eV, respectively, nearly independent of the diameter, and these values are close to the bulk values of Se and Te. In both the cases, the nanorods possess a small but finite conductance even in the band gap regions, the conductance value increasing with the diameter of the rod. A tunneling mechanism involving the surface states is proposed to explain this phenomenon. © 2005 Elsevier Ltd. All rights reserved
|Subjects:||Material Science > Nanostructured materials|
|Divisions:||Faculty of Engineering, Science and Mathematics > School of Chemistry|
|Deposited On:||20 Jan 2009 11:24|
|Last Modified:||26 Mar 2009 16:59|
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