A quantification of the interaction and spatial ordering in nano-arrays

M. Delanty, I. Levchenko*, K. Ostrikov, S. Rebić, S. Xu

*Corresponding author for this work

Research output: Contribution to journalArticle

3 Citations (Scopus)

Abstract

This paper reports on the use of a local order measure to quantify the spatial ordering of a quantum dot array (QDA). By means of electron ground state energy analysis in a quantum dot pair, it is demonstrated that the length scale required for such a measure to characterize the opto-electronic properties of a QDA is of the order of a few QD radii. Therefore, as local order is the primary factor that affects the opto-electronic properties of an array of quantum dots of homogeneous size, this order was quantified through using the standard deviation of the nearest neighbor distances of the quantum dot ensemble. The local order measure is successfully applied to quantify spatial order in a range of experimentally synthesized and numerically generated arrays of nanoparticles. This measure is not limited to QDAs and has wide ranging applications in characterizing order in dense arrays of nanostructures.

Original languageEnglish
Pages (from-to)7477-7482
Number of pages6
JournalApplied Surface Science
Volume255
Issue number17
DOIs
Publication statusPublished - 15 Jun 2009

Keywords

  • Nano-arrays
  • Quantum dots
  • Spatial order

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    Delanty, M., Levchenko, I., Ostrikov, K., Rebić, S., & Xu, S. (2009). A quantification of the interaction and spatial ordering in nano-arrays. Applied Surface Science, 255(17), 7477-7482. https://doi.org/10.1016/j.apsusc.2009.03.077