Effect of size on the Coulomb staircase phenomenon in metal nanocrystals

John Thomas, P. ; Kulkarni, G. U. ; Rao, C. N. R. (2000) Effect of size on the Coulomb staircase phenomenon in metal nanocrystals Chemical Physics Letters, 321 (1-2). pp. 163-168. ISSN 0009-2614

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Official URL: http://www.sciencedirect.com/science/article/pii/S...

Related URL: http://dx.doi.org/10.1016/S0009-2614(00)00305-5

Abstract

The Coulomb staircase in polymer-covered Pd and Au nanocrystals of varying diameters in the 1.7-6.4 nm has been investigated by employing tunneling conductance measurements. Charging up to several electrons is observed at room temperature in the I-V data. Small nanocrystals show charging steps exceeding 200 mV while the larger ones exhibit smaller steps. Significantly, the charging energies follow a scaling law of the form, U=A+B/d, where d is the diameter of the nanocrystal. Furthermore, the line widths in the derivative spectra also vary inversely with the diameter.

Item Type:Article
Source:Copyright of this article belongs to Elsevier Science.
ID Code:42397
Deposited On:02 Jun 2011 13:09
Last Modified:17 May 2016 23:43

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