| abstract |
Nanoparticles containing IUPAC group 11 ions, group 13 ions and sulfide ions are synthesized by adding a metal salt and an alkanethiol in an organic solvent and promoting the reaction by applying heat. Nanoparticles are formed at temperatures as low as 200 ℃. The nanoparticles can be thermally annealed at a temperature below the reaction temperature (typically-40 ℃ lower) for a period of time to improve topology and narrow the size distribution. After the reaction is complete, the nanoparticles can be isolated by adding a non-solvent and redispersed in an organic solvent comprising toluene, chloroform, and hexane to form a nanoparticle ink. Additives may be added to the reaction solution to adjust the final ink viscosity. |