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Growth Mechanism of Cadmium Sulfide Nanocrystals

Viswanatha, Ranjani and Amenitsch, Heinz and Santra, Sanjitarani and Sapra, Sameer and Datar, Suwarna S and Zhou, Yu and Nayak, Saroj K and Kumar, Sanat K and Sarma, DD (2010) Growth Mechanism of Cadmium Sulfide Nanocrystals. In: Journal of the American Chemical Society, 1 (1). pp. 304-308.

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Official URL: http://pubs.acs.org/doi/abs/10.1021/jz9001339

Abstract

We investigate the growth kinetics of CdS nanocrystals in the quantum confinement regime using time-resolved small-angle X-ray scattering. In contrast to earlier reports for similar systems, we establish that the growth kinetics in this case follows the Lifshitz-Slyozov-Wagner theory, for not only growth of the average diameter of the nanocrystals but also the time dependence of the size distribution and the temperature dependence of the rate constant. This is the first rigorous example of the coarsening process in the quantum confinement (< 5 nm)regime. Ab initio studies for the reaction pathways provide a microscopic understanding of this finding.

Item Type: Journal Article
Additional Information: Copyright of this article belongs to American Chemical Society.
Department/Centre: Division of Chemical Sciences > Solid State & Structural Chemistry Unit
Date Deposited: 11 May 2010 10:38
Last Modified: 09 Jan 2013 04:58
URI: http://eprints.iisc.ernet.in/id/eprint/27709

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