Synthesis of High Quality Zinc Blende CdSe Nanocrystals
The Journal of Physical Chemistry B2005Vol. 109(21), pp. 10533–10537
Citations Over TimeTop 10% of 2005 papers
Abstract
Highly homogeneous and luminescent CdSe colloidal nanocrystals in the less common zinc blende crystal structure have been obtained at high temperature in a noncoordinating organic solvent. The key parameter appears to be the addition of a phosphonic acid to the trioctylphosphine-selenium complex before its injection into the hot cadmium mixture, while the role of temperature is less relevant. Compared to standard (wurtzite) colloidal CdSe preparations, we find that the growth rate is considerably reduced, and the energy gap between the first two absorption bands becomes larger.
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