In this work, some of the advances on the European project MILEDI (www.miledi-h2020.eu) are illustrated. In particular, the advances in Direct Laser Patterning (DLP) for the synthesis of photo-luminescent semiconductor quantum dots (QDs) are reported.<br/>The work is divided into two main sections: i) the first one illustrates how the temperature can affect the growth of the QDs starting from a precursor when they are embedded in a polymer and ii) the second one the effect of the laser patterning on the same film.<br/>In both cases, the analysis of the QDs formation is carried out by studying the optical properties of the film employing absorption, photoluminescent spectroscopy, and fluorescent microscopy.<br/>The analysis of the photoluminescence (PL) spectra indicates that is possible to form QDs of different size by modulating the laser parameters. In particular, the CdTe QDs generated through the laser showed the formation of PL spectra in the red and green regions of the visible spectrum.<br/>These results pave the way to exploit this technique for the realization of color down conversion filters for micro-LED/OLED displays which is one of the main goals of the MILEDI project.

Synthesis and size modulation of semiconductor quantum dots in film induced by direct laser patterning

ACS Spring 2022

The official archive and repository for all ACS Meetings & Expositions abstracts and select posters or presentations.