Tunable photoluminescence of bilayer MoS2 via interlayer twist
Source abstract
Abstract
Abstract Atomically thin molybdenum disulfide (MoS2) has been treated as a promising optoelectronic material, due to its strong photoluminescence (PL) emission. Here, we demonstrate the tunability of the PL properties of bilayer MoS2 through interlayer twist. The PL emission peak position, full-width-at-half-maximum (FWHM) and intensity are found to be dependent on the twisted angle, which reach their extremum for the twisted angle around 40°. This PL modulation is attributed to the change of the interlayer coupling between the adjacent MoS2 layers. In addition, peak A splitting of PL spectra is found in twisted bilayer MoS2, due to the doping effect from substrate. These results enrich our understanding of the relationship between PL emission and interlayer coupling, which is significant for optical and electrical applications of twisted bilayer MoS2 (tBLM).
Source: openaire · Quality: candidate unverified · Source record ↗
Research context
OpenAlex topics: 2D Materials and Applications · Perovskite Materials and Applications · MXene and MAX Phase Materials
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
References (45)
Show source-provided references
1. Large excitonic effects in monolayers of molybdenum and tungsten dichalcogenides10.1103/PhysRevB.86.115409 ↗
2. Ultrafast response of monolayer molybdenum disulfide photodetectors10.1038/ncomms9831 ↗
3. Layered semiconductor molybdenum disulfide nanomembrane based Schottky-barrier solar cells10.1039/c2nr32394j ↗
4. Multicolor light‐emitting diodes with MoS2 quantum dots10.1002/ppsc.201800362 ↗
5. Increasing optical absorption in one-dimensional photonic crystals including MoS2 monolayer for photovoltaics applications10.1016/j.optmat.2016.09.040 ↗
6. Heterojunction solar cell based on n-MoS2/p-InP10.1016/j.optmat.2018.10.052 ↗
7. Low power continuous-wave nonlinear optical effects in MoS2 nanosheets synthesized by simple bath ultrasonication10.1016/j.optmat.2017.09.020 ↗
8. Band-like transport in high mobility unencapsulated single-layer MoS2 transistors10.1063/1.4803920 ↗
9. Valleytronics. the valley Hall effect in MoS2 transistors10.1126/science.1250140 ↗
10. Temperature-dependent Raman studies and thermal conductivity of few-Layer MoS2
11. Phonon thermal conductivity of monolayer MoS2 sheet and nanoribbons
12. Atomically thin MoS2: a new direct-gap semiconductor10.1103/PhysRevLett.105.136805 ↗
13. Emerging photoluminescence in monolayer MoS210.1021/nl903868w ↗
14. Ultrafast carrier transfer promoted by interlayer coulomb coupling in 2D/3D perovskite heterostructures10.1002/lpor.201800128 ↗
15. Temperature-dependent excitonic photoluminescence excited by two-photon absorption in perovskite CsPbBr3 quantum dots10.1364/OL.41.003821 ↗
16. Defect induced photoluminescence in MoS2 quantum dots and effect of Eu3+/Tb3+ co-doping towards efficient white light emission10.1016/j.optmat.2018.03.012 ↗
17. Tunable photoluminescence of monolayer MoS2 via chemical doping10.1021/nl403036h ↗
18. Controlled defect creation and removal in graphene and MoS2 monolayers10.1039/C7NR01712J ↗
19. Electrical control of neutral and charged excitons in a monolayer semiconductor10.1038/ncomms2498 ↗
20. Tightly bound trions in monolayer MoS210.1038/nmat3505 ↗
21. Experimental demonstration of continuous electronic structure tuning via strain in atomically thin MoS210.1021/nl4013166 ↗
22. Folded MoS2 layers with reduced interlayer coupling10.1007/s12274-014-0425-z ↗
23. Probing the interlayer coupling of twisted bilayer MoS2 using photoluminescence spectroscopy10.1021/nl5014597 ↗
24. Anomalous lattice vibrations of single-and few-layer MoS210.1021/nn1003937 ↗
25. Direct measurement of the tunable electronic structure of bilayer MoS2 by interlayer twist10.1021/acs.nanolett.5b03883 ↗
26. Twistable electronics with dynamically rotatable heterostructures10.1126/science.aat6981 ↗
27. Observation of Van Hove singularities in twisted graphene layers10.1038/nphys1463 ↗
28. Unconventional superconductivity in magic-angle graphene superlattices10.1038/nature26160 ↗
29. Correlated insulator behaviour at half-filling in magic-angle graphene superlattices10.1038/nature26154 ↗
30. Quasicrystalline 30˚ twisted bilayer graphene as an incommensurate superlattice with strong interlayer coupling
31. Tailoring the electronic structure in bilayer molybdenum disulfide via interlayer twist10.1021/nl501077m ↗
32. Zhang · 2019
33. Twist angle-dependent conductivities across MoS2/graphene heterojunctions10.1038/s41467-018-06555-w ↗
34. Evolution of interlayer coupling in twisted molybdenum disulfide bilayers10.1038/ncomms5966 ↗
35. First principles study and empirical parametrization of twisted bilayer MoS2 based on band-unfolding10.1063/1.4962438 ↗
36. Twisted MX2/MoS2 heterobilayers: effect of van der Waals interaction on the electronic structure10.1039/C7NR07746G ↗
37. Band engineering in twisted molybdenum disulfide bilayers10.1088/1361-6463/aab759 ↗
38. Grains and grain boundaries in highly crystalline monolayer molybdenum disulphide10.1038/nmat3633 ↗
39. New first order Raman-active modes in few layered transition metal dichalcogenides10.1038/srep04215 ↗
40. Low-frequency interlayer Raman modes to probe interface of twisted bilayer MoS210.1021/acs.nanolett.5b05015 ↗
41. Valley and band structure engineering of folded MoS2 bilayers10.1038/nnano.2014.176 ↗
42. Magnetoelectric effects and valley-controlled spin quantum gates in transition metal dichalcogenide bilayers10.1038/ncomms3053 ↗
43. Spin-layer locking effects in optical orientation of exciton spin in bilayer WSe210.1038/nphys2848 ↗
44. Optical investigation of the natural electron doping in thin MoS2 films deposited on dielectric substrates10.1038/srep03489 ↗
45. Photoluminescence of freestanding single- and few-layer MoS2