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Issue 24, 2011
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Rapid preparation of highly luminescent CdTe nanocrystals in an ionic liquid via a microwave-assisted process

Yu Hayakawa,a  Yoshiyuki Nonoguchi,a  Hui-Ping Wu,b  Eric W.-G. Diau,b  Takuya Nakashima*a  and  Tsuyoshi Kawai*a 
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* Corresponding authors

a Graduate School of Materials Science, Nara Institute of Science and Technology, NAIST, Ikoma, Japan
E-mail: ntaku@ms.naist.jp, tkawai@ms.naist.jp

b Department of Applied Chemistry, National Chiao Tung University, Hsinchu, Taiwan

Abstract

Thiol-capped CdTe nanocrystals are synthesized directly in an ionic liquid by means of microwave irradiation in a similar manner to an aqueous synthetic route. The combination of ionothermal synthesis with microwave heating offers a quick route to highly luminescent CdTe nanocrystals with zincblende crystal structure. The growth of nanocrystals is considered based on a universal growth model under the assumption that the growth rate exponentially converges as the reaction proceeds. The analysis indicates that the ionothermal conditions with high temperature promote the steady growth of nanocrystals after the nucleation, while the microwave irradiation plays a pivotal role in the limiting step of the growth of nanocrystals including the activation of nanocrystal precursor and the subsequent formation of nuclei.

Graphical abstract: Rapid preparation of highly luminescent CdTe nanocrystals in an ionic liquid via a microwave-assisted process

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Publication details

The article was received on 11 Mar 2011, accepted on 14 Apr 2011 and first published on 17 May 2011


Article type: Paper
DOI: 10.1039/C1JM11059D
Citation: J. Mater. Chem., 2011,21, 8849-8853
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    Rapid preparation of highly luminescent CdTe nanocrystals in an ionic liquid via a microwave-assisted process

    Y. Hayakawa, Y. Nonoguchi, H. Wu, E. W.-G. Diau, T. Nakashima and T. Kawai, J. Mater. Chem., 2011, 21, 8849
    DOI: 10.1039/C1JM11059D

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