Magneto-Optical Studies of HgTe/HgxCd1-xTe(S) Core-Shell Nanocrystals

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journalpeer-review

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Author(s)

  • Leonid Fradkin
  • Lidia Langof
  • Efrat Lifshitz
  • Nikolai Gaponik
  • Horst Weller
  • Alex Eychmüller

Detail(s)

Original languageEnglish
Pages (from-to)1203-1210
Journal / PublicationChemPhysChem
Volume4
Issue number11
Publication statusPublished - 14 Nov 2003
Externally publishedYes

Abstract

The synthesis and magneto-optical properties of HgTe nanocrystals capped with HgxCd1-xTe(S) alloyed shells have been investigated. The magneto-optical measurements included the use of optically detected magnetic resonance (ODMR) and circular polarized photoluminescence (CP-PL) spectroscopy. The PL spectra suggest the existence of luminescence events from both the core HgTe and the HgxCd1-xTe(S) shells. The continuous-wave (cw) and time-resolved ODMR measurements revealed that the luminescence at the shell regime is associated with a trap-to-band recombination emission. The electron trap is comprised of a Cd-Hg mixed site, confirming the existence of an alloyed HgxCd1-xTe(S) composition. The ODMR data and the CP-PL measurements together revealed the g-values of the trapped electron and the valence band hole.

Research Area(s)

  • Alloys, Core-shell nanocrystals, Magneto-optical properties, ODMR (optical detection of magnetic resonance)

Citation Format(s)

Magneto-Optical Studies of HgTe/HgxCd1-xTe(S) Core-Shell Nanocrystals. / Fradkin, Leonid; Langof, Lidia; Lifshitz, Efrat; Rogach, Andrey; Gaponik, Nikolai; Weller, Horst; Eychmüller, Alex.

In: ChemPhysChem, Vol. 4, No. 11, 14.11.2003, p. 1203-1210.

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journalpeer-review