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Atomic Model of CdSe QDs Containing Density Waves as Derived from PDF Analysis

Published online by Cambridge University Press:  17 July 2013

B. Palosz ,
W. Palosz ,
P. Wijewarnasuriya ,
S. Gierlotka ,
K. Skrobas  and
S. Stelmakh
B. Palosz
Affiliation:
Institute of High Pressure Physics PAS, ul. Sokolowska 29-37, 01-142 Warsaw, Poland
W. Palosz
Affiliation:
Brimrose Corporation, Sparks, Md 21152, USA
P. Wijewarnasuriya
Affiliation:
Army Research Laboratory, 2800 Powder Mill Road, Adelphi, Md 20783-1197, USA
S. Gierlotka
Affiliation:
Institute of High Pressure Physics PAS, ul. Sokolowska 29-37, 01-142 Warsaw, Poland
K. Skrobas
Affiliation:
Institute of High Pressure Physics PAS, ul. Sokolowska 29-37, 01-142 Warsaw, Poland
S. Stelmakh
Affiliation:
Institute of High Pressure Physics PAS, ul. Sokolowska 29-37, 01-142 Warsaw, Poland
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Abstract

Using a new methodology of elaboration of PDF data (G(r) function), which is based on the analysis of individual inter-atomic distances (ri), a function describing differences between average inter-atomic distances in CdSe nanograins derived experimentally and those in the parent bulk crystal was determined. Based on that methodology a unique atomic architecture of CdSe QDs is proposed. The results show that a good knowledge about the grain surface of nanocrystals alone may be insufficient for understanding the nanomaterials properties, and that the real atomic structure of the interior of nanograins is of importance as well.

Keywords

nanostructurex-ray diffraction (XRD)interatomic arrangements
Type
Articles
Information
MRS Online Proceedings Library (OPL) , Volume 1554: Symposium U – Measurements of Atomic Arrangements and Local Vibrations in Nanostructured Materials , 2013 , mrss13-1554-u02-03
Copyright
Copyright © Materials Research Society 2013 

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References

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