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High-Quality ZnS Shells for CdSe Nanoparticles:  Rapid Microwave Synthesis

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journal contribution
posted on 03.07.2007, 00:00 by Jan Ziegler, Alexei Merkulov, Markus Grabolle, Ute Resch-Genger, Thomas Nann
Using a domestic microwave oven and new, inexpensive precursors, a rapid and reliable synthesis of highly luminescent CdSe/ZnS NPs was developed. To evaluate the quality of our core/shell particles for varying shell thickness in comparison to that of CdSe/ZnS nanoparticles obtained commercially, the parameter fluorescence quantum yield is been used as well as a new, straightforward, thiophenol-based shell-quality test as a tool to ensure a dense ZnS shell without holes and cracks, which is a prerequisite for high luminescence and stability.

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