Trilayer-cubic core-shell structure of PbS/EuS nanocrystals revealed by the combination of the synchrotron small-angle X-ray scattering method and energy-dispersive X-ray spectroscopy
Dalton Transactions, ISSN: 1477-9226, Vol: 42, Issue: 45, Page: 16216-16221
2013
- 1Citations
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Article Description
Multilayer nanostructure analysis has been carried out for core-shell PbS/EuS nanocrystals by the combination of the synchrotron small-angle X-ray scattering (SAXS) method and energy-dispersive X-ray spectroscopy (EDS). SAXS patterns of a dilute hexane solution of the PbS/EuS nanocrystals were measured at a high signal-to-noise ratio by using synchrotron radiation. Initial structure models used for SAXS data analyses were obtained from EDS images of the particle where Eu and O atoms are localized only in the shell part of a quasi-cubic particle and, on the other hand, Pb and S atoms in the core. By simulating the intensity of SAXS using multilayer-cubic models with various core-shell electron density distributions, it was found that the particle structure was explained approximately as a trilayer-cubic model having the PbS core and the EuS/EuO shell. The diagonal length of the cubic particle was ca. 9.4 nm and the estimated thicknesses of EuS and Eu O layers in the shell were ca. 1.9 and 2.9 nm at maximum, respectively. © 2013 The Royal Society of Chemistry.
Bibliographic Details
http://www.scopus.com/inward/record.url?partnerID=HzOxMe3b&scp=84886829414&origin=inward; http://dx.doi.org/10.1039/c3dt51710a; http://www.ncbi.nlm.nih.gov/pubmed/24113715; https://xlink.rsc.org/?DOI=c3dt51710a; https://dx.doi.org/10.1039/c3dt51710a; https://pubs.rsc.org/en/content/articlelanding/2013/dt/c3dt51710a
Royal Society of Chemistry (RSC)
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