Cd-Free Quantum Dot Dispersion in Polymer and their Film Molds

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Indium phosphide (InP) quantum dots (QDs) with luminescence tunable over the entire visible spectrum were prepared by the conventional hot injection method. InP QDs are considered alternatives to Cadmium containing QDs for application in light-emitting devices because of showing similar optical properties to those containing toxic heavy metals. The multishell coating was shown to improve the photoluminescence quantum yield (QY) of InP QDs more strongly than the conventional ZnS shell coating. QY values were more than 60% along with FWHM of 41-73 nm can be routinely achieved, making the optical performance of InP/ZnS/ZnS or InP/ZnS/SiO2 QDs comparable to that of InP/ZnS QDs. These QDs and the polymer dissolved in the appropriate solvent and deposited by casting to give homogeneous films and showed a good level of dispersion of the QDs within the polymer.

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Edited by:

Pietro Vincenzini

Pages:

38-43

Citation:

Y. Y. Su et al., "Cd-Free Quantum Dot Dispersion in Polymer and their Film Molds", Advances in Science and Technology, Vol. 98, pp. 38-43, 2017

Online since:

October 2016

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$41.00

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[1] G. Chansin and X. He, Quandum dots 2016-2026: Applications, Markets, Manufactures, (2015).

[2] R.E. Bailey, J.B. Strausburg and S. Nie. A new class of far-red and near-infrared biological labels based on alloyed semiconductor quantum dots. J. Nanosci. Nanotechnol. 4 (2004) 569–574.

DOI: https://doi.org/10.1166/jnn.2004.004

[3] Lei Shen, Biocompatible Polymer/Quantum Dots Hybrid Materials: Current Status and Future Developments, J. Funct. Biomater. 2 (2011) 355-372.

DOI: https://doi.org/10.3390/jfb2040355

[4] Hussain S, Won N, Nam J, Bang J, Chung H, Kim S, One pot fabrication of high-quality InP/ZnS (core/shell) quantum dots and their application to cellular imaging. Chemphyschem 10 (2009) 1466–1470.

DOI: https://doi.org/10.1002/cphc.200900159

[5] Li L, Reiss P, One-pot synthesis of highly luminescent InP/ZnS nanocrystals without precursor injection. J Am Chem Soc 130 (2008)11588–11589.

DOI: https://doi.org/10.1021/ja803687e

[6] Feng Zan and Jicun Ren Gas-liquid phase synthesis of highly luminescent InP/ZnS core/shell quantum dots using zinc phosphide as a new phosphorus source J. Mater. Chem., 22 (2012) 1794–1799.

DOI: https://doi.org/10.1039/c1jm13982g

[7] Nathan E. Stott, Klavs F. Jensen, Moungi G, Bawendi, Brain K. H. Yen, Method of preparing nanocrystals US patent 7, 229, 497 B2(2004).

[8] Bae, W. K.; Char, K.; Hur, H.; Lee, S. Single-Step Synthesis of Quantum Dots with Chemical Composition Gradients, Chem. Mater. (2008) 20, 531–539.

DOI: https://doi.org/10.1021/cm070754d