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Issue 1, 2011
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Aqueous synthesis of color-tunable and stable Mn2+-doped ZnSe quantum dots

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Abstract

The aqueous synthesis of color-tunable and stable Mn2+-doped ZnSe quantum dots (Mn:ZnSe d-dots) via a nucleation-doping strategy was realized in a three-necked flask and the photoluminescence (PL) peak position was easily tuned from 572 nm to 602 nm by prolonging the epitaxial-growthg time. The chemical stability of the resulting d-dots is much better than that of CdTevia an aqueous synthesis. Separation of nucleation and growth of crystallization, and multiple-step-injection of both zinc precursor and 3-mercaptopropionic acid (MPA) stabilizing reagent, were employed to realize a balanced, mutually diffused interface and a pure ZnSe shell. The resulting nanocrystals show excellent optical properties, implying that nanocrystals with high quality could also be achieved via aqueous synthesis.

Graphical abstract: Aqueous synthesis of color-tunable and stable Mn2+-doped ZnSe quantum dots

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Publication details

The article was received on 13 Jun 2010, accepted on 14 Sep 2010 and first published on 22 Oct 2010


Article type: Paper
DOI: 10.1039/C0JM01878C
Citation: J. Mater. Chem., 2011,21, 151-156
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    Aqueous synthesis of color-tunable and stable Mn2+-doped ZnSe quantum dots

    P. Shao, Q. Zhang, Y. Li and H. Wang, J. Mater. Chem., 2011, 21, 151
    DOI: 10.1039/C0JM01878C

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