Universität Duisburg-Essen – TechConnect Briefs

Stable colloidal dispersion of luminescing silicon nanoparticles for inkjet printing

Gupta A., Khalil A.S.G., Winterer M., Wiggers H., Universität Duisburg-Essen, DE

In this study, we synthesized Si-NPs with mean diameter about 4.2 nm in a microwave plasma reactor. In order to disperse these Si-NPs in organic solvent, the surface of freshly etched Si-NPs was modified with [...]

Optical properties of silicon nanoparticles: Influence of etching, surface oxidation and surface functionalization

Gupta A., Kluge S., Schulz C., Wiggers H., Universität Duisburg-Essen, DE

In this study, we investigated the properties of Si-NPs after surface etching, surface re-oxidation and surface functionalization processes. Surface etching of as-synthesized Si-NPs with hydrofluoric acid causes a blue shift compared to their initial emission [...]