Magneto-optical studies of HgTe/HgxCd1-xTe(S) core-shell nanocrystals.
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.
Fradkin
Leonid
L
Department of Chemistry and Solid State Institute, Technion-Israel Institute of Technology, 32000 Haifa, Israel.
Langof
Lidia
L
Lifshitz
Efrat
E
Rogach
Andrey
A
Gaponik
Nikolai
N
Weller
Horst
H
Eychmüller
Alex
A