Inkjet printing of high-concentration particle-free platinum inks

An investigation into the optimisation of a highly-concentrated (20 wt%) and stable platinum (Pt) organometallic ink, showing consistent jetting performance whilst minimising negatives associated with particle-containing inks. The ink was synthesised printing demonstrated onto glass by piezoelectric drop-on-demand inkjet printer. Stable rapid (Z number: 1.83, 8 m/s) achieved using cyclohexanol-based viscosity modifiers print settings. Uniform nanofilms (10 – 30 nm) were obtained successive layers which showed high conductivities (1.6 ± 0.13 × 106S/m, 17% bulk Pt). 20 wt% concentrated inks increased uniformity electrical conductivity over previously reported 10 equivalent inks, enabling for first-time conductive features single pass. High quality films deposited increasing printed thickness due to significant improvements across centre films. A film purity X-ray diffraction, Scanning Electron Microscopy Energy Dispersive X-rays. suitability Pt production Surface Enhanced Raman Scattering (SERS) detection platforms also investigated. presented work will pave way applications benefiting from selective deposition low reactivity nanofilms, as proof concept an LED circuit is demonstrated.