Integration of topological insulator nanogap with atomic single layer for boosting photoluminescence
Source abstract
Abstract
Abstract As a new class of nanomaterials, topological insulators with the Dirac surface conducting state and insulating bulk state offer a promising platform for plasmonics with breaking through the frequency and integration limitation of traditional materials. The combination of topological insulators with atomic-layer materials will be significant for the realization of integrated plasmonic functional devices. Herein, we experimentally report the plasmon-enhanced photoluminescence (PL) emission behavior of molybdenum disulfide (MoS2) single layer integrated with an antimony telluride (Sb2Te3) topological insulator nanogap. It is found that the PL response of MoS2 on the nanogap is dependent on the polarization of incident light. The MoS2 PL intensity can be distinctly improved with plasmonic excitation on Sb2Te3 nanogap. These results will contribute to exploring plasmonic behaviors of topological insulators and their applications in enhanced light-matter interaction for nanoscale light emission and harvesting devices.
Source: openaire · Quality: candidate unverified · Source record ↗
Research context
OpenAlex topics: Topological Materials and Phenomena · 2D Materials and Applications · Graphene research and applications
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
References (46)
Show source-provided references
1. Quantum spin Hall effect and topological phase transition in HgTe quantum wells10.1126/science.1133734 ↗
2. Quantum spin Hall insulator state in HgTe quantum wells10.1126/science.1148047 ↗
3. Topological insulators in Bi2Se3, Bi2Te3 and Sb2Te3 with a single Dirac cone on the surface10.1038/nphys1270 ↗
4. Colloquium: topological insulators10.1103/RevModPhys.82.3045 ↗
5. Selective probing of photoinduced charge and spin dynamics in the bulk and surface of a topological insulator10.1103/PhysRevLett.107.077401 ↗
6. Nanometric holograms based on a topological insulator material10.1038/ncomms15354 ↗
7. Observation of type I photonic Weyl points in optical frequencies10.1002/lpor.201700271 ↗
8. Observation of Dirac plasmons in a topological insulator10.1038/nnano.2013.134 ↗
9. Ultraviolet and visible range plasmonics in the topological insulator Bi1.5Sb0.5Te1.8Se1.210.1038/ncomms6139 ↗
10. Visible surface plasmon modes in single Bi2Te3 nanoplate10.1021/acs.nanolett.5b03966 ↗
11. Intrinsically core-shell plasmonic dielectric nanostructures with ultrahigh refractive index10.1126/sciadv.1501536 ↗
12. Actively tunable visible surface plasmons in Bi2Te3 and their energy-harvesting applications10.1002/adma.201506367 ↗
13. Sb2Te3 topological insulator: surface plasmon resonance and application in refractive index monitoring10.1039/C8NR09227C ↗
14. Angular-momentum nanometrology in an ultrathin plasmonic topological insulator film10.1038/s41467-018-06952-1 ↗
15. Magnetic plasmon resonances in nanostructured topological insulators for strongly enhanced light-MoS2 interactions10.1038/s41377-020-00429-x ↗
16. Semiconductor nanolasers and the size-energy-efficiency challenge: a review10.1117/1.AP.1.1.014002 ↗
17. Ultra-high modulation depth exceeding 2,400% in optically controlled topological surface plasmons10.1038/ncomms9814 ↗
18. Surface plasmon subwavelength optics10.1038/nature01937 ↗
19. High-speed plasmonic phase modulators10.1038/nphoton.2014.9 ↗
20. On-chip noninterference angular momentum multiplexing of broadband light10.1126/science.aaf1112 ↗
21. Plasmonics beyond the diffraction limit10.1038/nphoton.2009.282 ↗
22. Plasmonic nanosensor based on Fano resonance in waveguide-coupled resonators10.1364/OL.37.003780 ↗
23. Cascaded logic gates in nanophotonic plasmon networks10.1038/ncomms1388 ↗
24. Nonlinear plasmonics10.1038/nphoton.2012.244 ↗
25. Metallic subwavelength-cavity semiconductor nanolasers10.1038/lsa.2012.20 ↗
26. Two-dimensional material nanophotonics10.1038/nphoton.2014.271 ↗
27. Broadband absorption engineering to enhance light absorption in monolayer MoS210.1021/acsphotonics.6b00081 ↗
28. Extraordinary sunlight absorption and one nanometer thick photovoltaics using two dimensional monolayer materials10.1021/nl401544y ↗
29. Ultrafast response of monolayer molybdenum disulfide photodetectors10.1038/ncomms9831 ↗
30. Strong Photoluminescence enhancement of MoS2 through defect engineering and oxygen bonding10.1021/nn500532f ↗
31. Ultrafast plasmonic hot electron transfer in Au nanoantenna/MoS2 heterostructures10.1002/adfm.201601779 ↗
32. Enhanced light emission from large-area monolayer MoS2 using plasmonic nanodisc arrays10.1021/acs.nanolett.5b00407 ↗
33. Tuning the photo-response in monolayer MoS2 by plasmonic nano-antenna10.1038/srep23626 ↗
34. Modulation of crystal and electronic structures in topological insulators by rare-earth doping10.1021/acsaelm.9b00422 ↗
35. Crystal growth and x-ray diffraction characterization of Sb2Te3 single crystal10.1063/1.5098624 ↗
36. Infrared dielectric metamaterials from high refractive index chalcogenides10.1038/s41467-020-15444-0 ↗
37. Palik · 1991
38. Plasmonics of topological insulators at optical frequencies10.1038/am.2017.149 ↗
39. Indications of surface-dominated transport in single crystalline nanoflake devices of topological insulator Bi1.5Sb0.5Te1.8Se1.210.1103/PhysRevB.87.085442 ↗
40. Landau quantization and the thickness limit of topological insulator thin films of Sb2Te310.1103/PhysRevLett.108.016401 ↗
41. Layer-by-layer thinning of MoS2 by plasma10.1021/nn400644t ↗
42. Emerging photoluminescence in monolayer MoS210.1021/nl903868w ↗
43. Enhancing monolayer photoluminescence on optical micro/nanofibers for low-threshold lasing10.1126/sciadv.aax7398 ↗
44. Taflove · 2000
45. Tightly bound trions in monolayer MoS210.1038/nmat3505 ↗
46. A luminescence line-narrowing spectroscopic study of the uranium (VI) interaction with cementitious materials and titanium dioxide10.1039/C4DT02172J ↗