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Surfactant-assisted room-temperature synthesis of CdSe nanoclusters

Sathyamoorthy, R.; Manjuladevi, V.; Sudhagar, P.; Senthilarasu, S.; Pal, U.

Authors

R. Sathyamoorthy

V. Manjuladevi

P. Sudhagar

U. Pal



Abstract

CdSe nanoclusters of about 22 nm average size have been synthesized by a surfactant-assisted chemical method at room temperature. The as-grown nanoclusters were near stoichiometric and 70% of them were of hexagonal wurtzite crystalline phase. With undefined shapes, the crystalline nanoclusters remained arbitrarily oriented in a compact powder form. The morphology and structural behavior of the nanoclusters were studied by scanning electron microscopy and transmission electron microscopy. Thermal stability of the nanoclusters was studied by thermogravimetric analysis. Presence of very small clusters (<5 nm) in the sample revealed a blue shifted excitonic absorption peak along with the excitonic peak of bigger clusters.

Journal Article Type Article
Acceptance Date Apr 8, 2007
Online Publication Date Apr 13, 2007
Publication Date Sep 15, 2007
Deposit Date Mar 14, 2023
Journal Materials chemistry and physics
Print ISSN 0254-0584
Electronic ISSN 1879-3312
Publisher Elsevier
Peer Reviewed Peer Reviewed
Volume 105
Issue 1
Pages 20-24
DOI https://doi.org/10.1016/j.matchemphys.2007.04.008
Keywords CdSe nanoclusters, Surfactant-assisted synthesis, Structure, Morphology