Answer-based chemical doping supplies a easy and efficient method to controlling the provider focus of natural semiconductors by means of redox reactions. Nonetheless, the position of molecular oxygen, which is essentially the most considerable oxidant in air, has remained unclear. On this examine, we reveal environment friendly oxygen-driven doping in aqueous answer by using extremely hydrophobic anions. Particularly, using tetrakis(pentafluorophenyl)borate (TFPB–) because the dopant anion considerably enhances the doping effectivity and leads to excessive electrical conductivity of as much as 200 S cm-1. This enhancement is attributed to elevated anion exercise on the strong–liquid interface. Quartz crystal microbalance measurements reveal that hydrophobic anions spontaneously mixture within the aqueous part and quickly adsorb onto the natural semiconductor floor inside 15 seconds. This work presents a easy and environment friendly technique for oxygen-mediated doping. It additionally introduces a brand new design precept for controlling doping processes by means of interfacial molecular interactions.
