Article
Three-dimensional Structure of CdX (X= Se, Te) Nanocrystals by Total X-ray Diffraction
Journal of Applied Physics
Sponsor
The work was supported by NSF through Grant No. DMR 0304391 (NIRT) and CMU through Grant No. REF C602281. Use of the Advanced Photon Source was supported by the U. S. Department of Energy, Office of Science, Office of Basic Energy Sciences, under Contract No. DE-AC02-06CH11357.
Document Type
Article
Publication Date
1-1-2007
Subjects
- X-rays -- Diffraction,
- Nanocrystals -- Structure,
- Transmission electron microscopy,
- Quantum dots -- Research
Disciplines
Abstract
The three-dimensional structure of oleic acid-capped CdSe and thiol-capped CdTe nanocrystals used as quantum dots has been determined by total synchrotron radiationx-ray diffraction and atomic pair distribution function analysis. Both CdSe and CdTe are found to exhibit the zinc-blende-type atomic ordering. It is only slightly distorted in CdSe implying the presence of nanosize domains and very heavily distorted in CdTe due to the presence of distinct core-shell regions. The results well demonstrate the great potential of the experimental approach and thus encourage its wider application in quantum dot research.
Rights
© 2007 American Institute of Physics
Locate the Document
DOI
10.1063/1.2767615
Persistent Identifier
http://archives.pdx.edu/ds/psu/16103
Citation Information
Pradhan, S. K., Deng, Z. T., Tang, F., Wang, C., Ren, Y., Moeck, P., & Petkov, V. (2007). Three-dimensional structure of CdX (X= Se, Te) nanocrystals by total x-ray diffraction. Journal of Applied Physics, 102(4), 044304.
Originally appeared in the Journal of Applied Physics, volume 102, issue 4, in 2007. May be found at http://dx.doi.org/10.1063/1.2767615.