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Synthesis of CdZnSe Quantum Dots in Aqueous Phase by Microwave Irradiation

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Recently many kinds of quantum dots were prepared by using microwave irradiation. Microwave irradiation provides rapid heating of polar substance and consequently results in faster, cleaner, and more efficient reactions than conventional heating process. In this study, alloyed CdZnSe quantum dots (QDs) have been synthesized in aqueous phase by microwave irradiation using 3-mercaptopropionic acid (MPA) as a stabilizer. Cd(NO3) 2, Zn(NO3) 2 and NaHSe were used as Cd, Zn and Se precursors, respectively. The process parameters such as Zn/Cd molar ratio, reaction pH and reaction time were varied to prepare CdZnSe QDs and photoluminescence (PL) dependence was studied. A strong PL emission peak was observed from the QDs prepared in weak acid conditions. As the reaction time increased, the absorbance spectra of the QDs were red shifted with increase of the intensity.
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Keywords: Aqueous Phase; Microwave Irradiation; Ternary Alloyed QDs

Document Type: Research Article

Affiliations: Department of Chemical and Biological Engineering, Gachon University, Seongnam 461-701, Korea

Publication date: August 1, 2017

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  • Journal for Nanoscience and Nanotechnology (JNN) is an international and multidisciplinary peer-reviewed journal with a wide-ranging coverage, consolidating research activities in all areas of nanoscience and nanotechnology into a single and unique reference source. JNN is the first cross-disciplinary journal to publish original full research articles, rapid communications of important new scientific and technological findings, timely state-of-the-art reviews with author's photo and short biography, and current research news encompassing the fundamental and applied research in all disciplines of science, engineering and medicine.
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