Near-unity photoluminescence quantum yield in MoS 2
Lawrence Berkeley National Laboratory · University of California, Berkeley · +6 more institutions
Abstract
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 QY of 0.6%, which indicates a considerable defect density. Here we 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. The treatment eliminates defect-mediated nonradiative recombination, thus resulting in a final QY of…
Citation impact
- FWCI
- 51.24
- Percentile
- 100%
- References
- 47
Authors
18- MAMatin AmaniCorresponding
Lawrence Berkeley National Laboratory, University of California, Berkeley
- DLDer‐Hsien LienCorresponding
Lawrence Berkeley National Laboratory, National Taiwan University, King Abdullah University of Science and Technology, University of California, Berkeley
- DKDaisuke KiriyaCorresponding
Lawrence Berkeley National Laboratory, University of California, Berkeley
- JXJun Xiao
U.S. National Science Foundation, Lawrence Berkeley National Laboratory
- AAAngelica Azcatl
The University of Texas at Dallas
Topics & keywords
- Photoluminescence
- Quantum yield
- Monolayer
- Materials science
- Molybdenum disulfide
- Optoelectronics
- Yield (engineering)
- Diode