High quality CdS nanocrystals: surface effects

Stable and highly luminescent CdS nanocrystals (NCs) have been synthesized by means of decomposition of suitable precursors (CdO and elemental sulphur) in octadecene (ODE) and oleic acid at high temperature. Absorption and steady state photoluminescence (PL) measurements have been carried out to stu...

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Bibliographic Details
Published in:Synthetic metals 2003-10, Vol.139 (3), p.597-600
Main Authors: Zezza, F., Comparelli, R., Striccoli, M., Curri, M.L., Tommasi, R., Agostiano, A., Della Monica, M.
Format: Article
Language:English
Subjects:
CdS
Colloidal nanocrystals
Condensed matter: electronic structure, electrical, magnetic, and optical properties
Exact sciences and technology
Luminescence
Nanocrystals and nanoparticles
Optical properties and condensed-matter spectroscopy and other interactions of matter with particles and radiation
Optical properties of low-dimensional, mesoscopic, and nanoscale materials and structures
Physics
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Summary:Stable and highly luminescent CdS nanocrystals (NCs) have been synthesized by means of decomposition of suitable precursors (CdO and elemental sulphur) in octadecene (ODE) and oleic acid at high temperature. Absorption and steady state photoluminescence (PL) measurements have been carried out to study the intrinsic properties of nanocrystals and the effect of ligand and solvent on emission properties. Ageing of nanocrystals has been investigated, and an efficient mechanism of emission recovery has been identified, showing the active role of non coordinating solvent and oleic acid in modifying the surface states.
ISSN:0379-6779
1879-3290
DOI:10.1016/S0379-6779(03)00320-5