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

Yu Hayakawa, Yoshiyuki Nonoguchi, Hui Ping Wu, Wei-Guang Diau, Takuya Nakashima*, Tsuyoshi Kawai

*Corresponding author for this work

Research output: Contribution to journalArticle

19 Scopus citations

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.

Original languageEnglish
Pages (from-to)8849-8853
Number of pages5
JournalJournal of Materials Chemistry
Volume21
Issue number24
DOIs
StatePublished - 28 Jun 2011

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