  In this work, we observe plasmon induced hot electron extraction in a
heterojunction between indium tin oxide nanocrystals and monolayer molybdenum
disulphide. We study the sample with ultrafast differential transmission
exciting the sample at 1750 nm where the intense localized plasmon surface
resonance of the indium tin oxide nanocrystals is and where the monolayer
molybdenum disulphide does not absorb light. With the excitation at 1750 nm we
observe the excitonic features of molybdenum disulphide in the visible range,
close to the exciton of molybdenum disulphide. Such phenomenon can be ascribed
to a charge transfer between indium tin oxide nanocrystals and monolayer
molybdenum disulphide upon plasmon excitation. These results are a first step
towards the implementation of near infrared plasmonic materials for
photoconversion.
