Nano letters, 2014-10, Vol.14 (10), p.5500-5508
2014
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Details
- Autor(en) / Beteiligte
- Titel
- Probing the Interlayer Coupling of Twisted Bilayer MoS2 Using Photoluminescence Spectroscopy
- Ist Teil von
- Nano letters, 2014-10, Vol.14 (10), p.5500-5508
- Ort / Verlag
- Washington, DC: American Chemical Society
- Erscheinungsjahr
- 2014
- Quelle
- MEDLINE
- Beschreibungen/Notizen
- Two-dimensional molybdenum disulfide (MoS2) is a promising material for optoelectronic devices due to its strong photoluminescence emission. In this work, the photoluminescence of twisted bilayer MoS2 is investigated, revealing a tunability of the interlayer coupling of bilayer MoS2. It is found that the photoluminescence intensity ratio of the trion and exciton reaches its maximum value for the twisted angle 0° or 60°, while for the twisted angle 30° or 90° the situation is the opposite. This is mainly attributed to the change of the trion binding energy. The first-principles density functional theory analysis further confirms the change of the interlayer coupling with the twisted angle, which interprets our experimental results.
- Sprache
- Englisch
- Identifikatoren
- ISSN: 1530-6984eISSN: 1530-6992DOI: 10.1021/nl5014597Titel-ID: cdi_proquest_miscellaneous_1609508738
- Format
- –
- Schlagworte
- Condensed matter: electronic structure, electrical, magnetic, and optical properties, Disulfides - chemistry, Electron states, Exact sciences and technology, Excitons and related phenomena, Luminescence, Luminescent Measurements, Methods of electronic structure calculations, Models, Molecular, Molybdenum - chemistry, Nanostructures - chemistry, Optical properties and condensed-matter spectroscopy and other interactions of matter with particles and radiation, Optical properties of low-dimensional, mesoscopic, and nanoscale materials and structures, Physics, Spectrum Analysis