期刊
MATERIALS CHEMISTRY AND PHYSICS
卷 116, 期 2-3, 页码 388-391出版社
ELSEVIER SCIENCE SA
DOI: 10.1016/j.matchemphys.2009.03.041
关键词
Chalcogenides; Visible and ultraviolet spectrometers; Luminescence; Nucleation
资金
- National High Technology Research and Development Program of China [2007AA03Z301]
- Natural Science Foundations of China [20771032]
- Anhui Province [070414200]
- National Basic Research Program of China [2007CB9-36001]
High-quality CdSe quantum dots with less common zinc blende structure were prepared in non-coordinating solvent 1-octadecene, with environment-friendly N,N-dimethyl-oleoyl amide as an alternative chemical to replace trioctylphoshine for Se powder, oleic acid as primary capping ligands, and benzophenone as secondary ligands. The temporal evolution of the optical properties of the nanocrystals with different growth temperature was monitored. Significant redshifts occurred with the increase of the growth temperature. The sharpness of the first absorption peaks and the narrow emission band with full width at the half-maximum of about 30 nm indicates that the size distribution of the resulting quantum dots is narrow. (C) 2009 Elsevier B.V. All rights reserved.
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