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Study of the Growth of Capped ZnO Nanocrystals: A Route to Rational Synthesis

Viswanatha, Ranjani and Sarma, D. D (2005) Study of the Growth of Capped ZnO Nanocrystals: A Route to Rational Synthesis. Chemistry - A European Journal, 12 (1). pp. 180-186.

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Official URL: http://www3.interscience.wiley.com/journal/1121254...

Abstract

We report the study of complex and unexpected dependencies of nanocrystal size as well as nanocrystal-size distribution on various reaction parameters in the synthesis of ZnO nanocrystals using poly(vinyl pyrollidone) (PVP) as a capping agent. This method establishes a qualitatively different growth mechanism to the anticipated Ostwald ripening behavior. The study of size-distribution kinetics and an understanding of the observed non-monotonic behaviors provides a route to rational synthesis. We used a simple, but accurate, approach to estimate the size-distribution function of nanocrystals from the UV-absorption spectrum. Our results demonstrate the accuracy and generality of this approach, and we also illustrate its application to various semiconducting nanocrystals, such as ZnO, ZnS, and CdSe, over a wide size range (1.8-5.3 nm).

Item Type:Article
Subjects:Material Science > Nanochemistry
Divisions:Faculty of Engineering, Science and Mathematics > School of Chemistry
ID Code:3866
Deposited By:JNCASR
Deposited On:27 Jan 2009 09:47
Last Modified:27 Jan 2009 09:47

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