Inkjet Printing of Aqueous Photoluminescent CdSe/CdS Nanorods on Solid Substrates

In order to deposit colloidal nanocrystals on different substrates, a large variety of methodologies have been developed, such as dipcoating, spin coating, or spray coating. The deposition of CdSe/CdS core‐shell nanorods (NRs) with a conventional office printer onto conducting tin‐doped indium oxide glass surfaces is presented. This involves the preparation of water‐based inks containing the NRs. To improve the connection between the CdSe/CdS NRs and the underlying substrates, the glass surfaces were modified by means of silanes. Homogeneous films were obtained by consecutively printing several layers of CdSe/CdS NRs. This work presents the deposition of CdSe/CdS nanorod films by inkjet printing on conducting tin‐doped indium oxide glasses. This involves the synthesis of CdSe/CdS nanorods in organic media, the phase transfer to aqueous solution, and the ink formulation. Thicknesses and homogeneity of the films were obtained by printing several layers over each other.