11:15 AM - 11:30 AM
[22a-W351-8] Near-Unity Photoluminescence Quantum Yield in MoS2 by Organic Superacid
Keywords:Transition metal dichalcogenide,Organic-inorganic interaction,Photoluminescence
Two-dimensional (2D) transition metal dichalcogenides have emerged as a promising material
system for optoelectronic applications, but their primary figure of merit, the room-temperature
photoluminescence quantum yield (QY), is extremely low.The prototypical 2D material
molybdenum disulfide (MoS2) is reported to have a maximum QYof 0.6%, which indicates a
considerable defect density. Herewe report on an air-stable, solution-based chemical treatment
by an organic superacid, which uniformly enhances the photoluminescence and minority
carrier lifetime of MoS2 monolayers by more than two orders of magnitude.
system for optoelectronic applications, but their primary figure of merit, the room-temperature
photoluminescence quantum yield (QY), is extremely low.The prototypical 2D material
molybdenum disulfide (MoS2) is reported to have a maximum QYof 0.6%, which indicates a
considerable defect density. Herewe report on an air-stable, solution-based chemical treatment
by an organic superacid, which uniformly enhances the photoluminescence and minority
carrier lifetime of MoS2 monolayers by more than two orders of magnitude.