Title: Direct laser patterning of photoluminescent semicondutor quantum dots in polymeric films

Abstract

The aim of this work is to present the synthesis and some of the optical properties of the photoluminescent semiconductor quantum dots (QDs) obtained through the Direct Laser Patterning (DLP) technique in a polymeric film. This study begins with the examination of the optical properties of the semiconductor quantum dots obtained by thermal decomposition of suitable precursors within the polymeric matrix. A this stage the effect of the different type of precursors and the presence of the ligands is discussed on the basis of the absorption and photoluminescent spectra. The obtained luminescent nanocomposites are then characterised by absorption spectroscopy, photoluminescent spectroscopy and fluorescent microscopy. The results show that the laser patterning can be a suitable method for the generation of the semiconductor QDs in selected areas of the polymer. These results pave the way to exploit this technique in displays technology and are one of the main goals of MILEDI project.