A Colloidal Synthesis Route Towards AgBiS₂ Nanocrystals Based on Metal Xanthate Precursors

Abstract Silver bismuth sulfide (AgBiS 2 ) is showing impressive thermoelectric and photovoltaic properties has a high potential to replace toxic cadmium or lead containing semiconductors in many applications. Herein, we report on synthesis route for AgBiS nanocrystals applying metal xanthates as precursors. could not be used so far solution‐based syntheses Ag‐containing they are typically insoluble organic solvents. An investigation of the process revealed that even though silver xanthate soluble solvent mixture consisting octadecene oleylamine, decomposition both precursors formation initiated already at room temperature by amine functionality ligand. At temperature, primary crystallite sizes approximately 4 nm observed reaction 200 °C, size increases 7–8 nm.