Optical properties and carrier dynamics in transition metal dichalcogenides and halide perovskites (Conference Presentation)

2020 ◽  
Author(s):  
Alexander Steinhoff ◽  
Frank Jahnke ◽  
Matthias Florian ◽  
Christoph Lienau ◽  
Antonietta De Sio ◽  
...  
Keyword(s):  
Optical Properties ◽  
Transition Metal ◽  
Transition Metal Dichalcogenides ◽  
Carrier Dynamics ◽  
Metal Dichalcogenides ◽  
Halide Perovskites

scholarly journals Giant Photoluminescence Enhancement and Carrier Dynamics in MoS2 Bilayers with Anomalous Interlayer Coupling

Nanomaterials ◽  
2021 ◽  
Vol 11 (8) ◽  
pp. 1994
Author(s):  
Han Li ◽  
Yating Ma ◽  
Zhongjie Xu ◽  
Xiang’ai Cheng ◽  
Tian Jiang
Keyword(s):  
Optical Properties ◽  
Transition Metal Dichalcogenides ◽  
Interlayer Coupling ◽  
Carrier Dynamics ◽  
Probe Signal ◽  
Exciton Resonance ◽  
Pump Probe ◽  
Metal Dichalcogenides ◽  
Photoluminescence Enhancement ◽  
Probe Measurements

Fundamental researches and explorations based on transition metal dichalcogenides (TMDCs) mainly focus on their monolayer counterparts, where optical densities are limited owing to the atomic monolayer thickness. Photoluminescence (PL) yield in bilayer TMDCs is much suppressed owing to indirect-bandgap properties. Here, optical properties are explored in artificially twisted bilayers of molybdenum disulfide (MoS2). Anomalous interlayer coupling and resultant giant PL enhancement are firstly observed in MoS2 bilayers, related to the suspension of the top layer material and independent of twisted angle. Moreover, carrier dynamics in MoS2 bilayers with anomalous interlayer coupling are revealed with pump-probe measurements, and the secondary rising behavior in pump-probe signal of B-exciton resonance, originating from valley depolarization of A-exciton, is firstly reported and discussed in this work. These results lay the groundwork for future advancement and applications beyond TMDCs monolayers.

Synergistic vacancy defects and mechanical strain for the modulation of the mechanical, electronic and optical properties of monolayer tungsten disulfide

2021 ◽  
Vol 23 (10) ◽  
pp. 6298-6308
Author(s):  
Chan Gao ◽  
Xiaoyong Yang ◽  
Ming Jiang ◽  
Lixin Chen ◽  
Zhiwen Chen ◽  
...  
Keyword(s):  
Optical Properties ◽  
Transition Metal ◽  
Mechanical Strain ◽  
Transition Metal Dichalcogenides ◽  
Strain Engineering ◽  
Tungsten Disulfide ◽  
Defect Engineering ◽  
Vacancy Defects ◽  
Electronic And Optical Properties ◽  
Metal Dichalcogenides

The combination of defect engineering and strain engineering for the modulation of the mechanical, electronic and optical properties of monolayer transition metal dichalcogenides (TMDs).

Wrinkle and Near Resonance Effect on the Vibrational and Electronic properties in Compressed Monolayer MoSe2

2021 ◽  
Author(s):  
Yan Liu ◽  
Qiang Zhou ◽  
Yalan Yan ◽  
Liang Li ◽  
Jian Zhu ◽  
...  
Keyword(s):  
High Pressure ◽  
Optical Properties ◽  
Transition Metal ◽  
Electronic Properties ◽  
Resonance Effect ◽  
Transition Metal Dichalcogenides ◽  
Effective Technique ◽  
Near Resonance ◽  
Metal Dichalcogenides

Pressure has been considered as an effective technique to modulate the structural, electronic, and optical properties of transition metal dichalcogenides (TMDs) materials. Here, by performing in situ high pressure Raman,...

scholarly journals Tailored performance of layered transition metal dichalcogenides via integration with low dimensional nanostructures

RSC Advances ◽  
2017 ◽  
Vol 7 (20) ◽  
pp. 11987-11997 ◽  
Author(s):  
De-Sheng Liu ◽  
Jiang Wu ◽  
Yanan Wang ◽  
Haining Ji ◽  
Lei Gao ◽  
...  
Keyword(s):  
Optical Properties ◽  
Transition Metal ◽  
Sandwich Structure ◽  
Transition Metal Dichalcogenides ◽  
Electrical And Optical Properties ◽  
Metal Dichalcogenides ◽  
Layered Transition Metal ◽  
Low Dimensional

Transition metal dichalcogenides (TMDs) with a unique sandwich structure have attracted tremendous attention in recent years due to their distinctive electrical and optical properties.

scholarly journals Electrical and optical properties of transition metal dichalcogenides on talc dielectrics

Nanoscale ◽  
2021 ◽  
Author(s):  
Darren Nutting ◽  
Gabriela Augusta Prando ◽  
Marion Severijnen ◽  
Ingrid Barcelos ◽  
Shi Guo ◽  
...  
Keyword(s):  
Optical Properties ◽  
Transition Metal ◽  
Defect Density ◽  
Transition Metal Dichalcogenides ◽  
Dielectric Materials ◽  
High Quality ◽  
Electrical And Optical Properties ◽  
Metal Dichalcogenides ◽  
Vdw Heterostructure ◽  
Heterostructure Devices

Advanced van der Waals (vdW) heterostructure devices rely on the incorporation of high quality dielectric materials which need to possess a low defect density as well as being atomically smooth...

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