Three-dimensional structure of CdX (X=Se,Te) nanocrystals by total x-ray diffraction

S. K. Pradhan, Z. T. Deng, F. Tang, C. Wang, Y. Ren, P. Moeck, V. Petkov

Research output: Contribution to journalArticlepeer-review

14 Scopus citations

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 radiation x-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.

Original languageEnglish
Article number044304
JournalJournal of Applied Physics
Volume102
Issue number4
DOIs
StatePublished - 2007

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