Inkjet Printing of Water “Soluble” Doped ZnS Quantum Dots

Abstract Water‐soluble‐doped ZnS quantum dots were synthesised and formulated for inkjet printing. The quantum dots were then inkjet‐printed onto a variety of substrates, including photo quality inkjet paper, cotton fabric, PET film, and glass. Of these substrates, only inkjet printing of doped ZnS quantum dots on photo‐quality inkjet paper and cotton fabric produced a photoluminescent print. The materials were characterised using a number of methods, including profilometer measurements, photoluminescence spectroscopy (PL), scanning electron microscopy (SEM), transmission electron microscopy (TEM) and viscosity measurements. On excitation with UV light, a photoluminescence emission of approximately 600 nm was observed.