Solid state synthesis of CdS quantum dots through laser direct writing

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Abstract

The synthesis of colloidal photo-luminescent semiconductor quantum dots (QDs), belonging to II-VI groups, even from single source precursors is presented. Since three decades their synthesis has been pursued implementing new and easier synthetic conditions that standardize their production. In this work is reported the production of luminescent of CdS QDs in a polymeric film induced by laser processing (www.miledi-h2020.eu/). A film of PMMA doped with two types of precursors (cadmium xanthates) is irradiated with an UV laser source with different energy doses. The structured film will then be observed with confocal fluorescent microscope. The interesting results shows that the two different xanthates display a different behavior under the laser source even if their absorption spectrum is similar. The second interesting result is that the effect of the laser is the production luminescent pattern only for certain fluences and that the same film treated with the temperature did not show any luminescence.

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APA

Antolini, F., & Orazi, L. (2019). Solid state synthesis of CdS quantum dots through laser direct writing. In AIP Conference Proceedings (Vol. 2145). American Institute of Physics Inc. https://doi.org/10.1063/1.5123577

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