TY - JOUR
T1 - Optically detected magnetic resonance of thiol-capped CdTe nanocrystals
AU - Glozman, Alexander
AU - Lifshitz, Efrat
AU - Hoppe, Kathrin
AU - Rogach, Ahdrey L.
AU - Welllr, Horst
AU - Echymüller, Alexander
PY - 2001
Y1 - 2001
N2 - The optical properties of thiol-stabilized CdTe nanocrystals have been examined. The thiol groups -SR generate a CdS shell at the interface, leading to a CdTe/CdS core-shell structure. The present paper describes our efforts to identify the influence of the CdTe-SR interface on the optical properties of the nanocrystals, utilizing photoluminescence and optically detected magnetic resonance (ODMR) spectroscopy. The photoluminescence spectrum consists of an excitonic peak, overlapped by a broad band at lower energies. The ODMR spectrum, in the spectral regime of the broad band, showed two resonance signals. They are associated with a trapped hole at an anisotropic site of a cadmium vacancy at the Cd-SR interface and an electron in the conduction band.
AB - The optical properties of thiol-stabilized CdTe nanocrystals have been examined. The thiol groups -SR generate a CdS shell at the interface, leading to a CdTe/CdS core-shell structure. The present paper describes our efforts to identify the influence of the CdTe-SR interface on the optical properties of the nanocrystals, utilizing photoluminescence and optically detected magnetic resonance (ODMR) spectroscopy. The photoluminescence spectrum consists of an excitonic peak, overlapped by a broad band at lower energies. The ODMR spectrum, in the spectral regime of the broad band, showed two resonance signals. They are associated with a trapped hole at an anisotropic site of a cadmium vacancy at the Cd-SR interface and an electron in the conduction band.
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U2 - 10.1560/GVFT-60DT-8Y0E-7DR9
DO - 10.1560/GVFT-60DT-8Y0E-7DR9
M3 - RGC 21 - Publication in refereed journal
SN - 0021-2148
VL - 41
SP - 39
EP - 44
JO - Israel Journal of Chemistry
JF - Israel Journal of Chemistry
IS - 1
ER -