scholarly journals Bithiazolidinylidene polymers: synthesis and electronic interactions with transition metal dichalcogenides

2018 ◽  
Vol 9 (22) ◽  
pp. 5047-5051 ◽  
Author(s):  
Ryan Selhorst ◽  
Peijian Wang ◽  
Michael Barnes ◽  
Todd Emrick
Keyword(s):  
Transition Metal ◽  
Transition Metal Dichalcogenides ◽  
Synthesis And Characterization ◽  
Electronic Interactions ◽  
Electronic Impact ◽  
Metal Dichalcogenides

We describe the synthesis and characterization of polymers bearing sulfur-rich, electron-accepting bithiazolidinylidene (BT) groups, and probe their electronic impact on 2-D transition metal dichalcogenides (TMDCs).

scholarly journals Exciton g-factors in monolayer and bilayer WSe2 from experiment and theory

2020 ◽  
Vol 11 (1) ◽  
Author(s):  
Jonathan Förste ◽  
Nikita V. Tepliakov ◽  
Stanislav Yu. Kruchinin ◽  
Jessica Lindlau ◽  
Victor Funk ◽  
...  
Keyword(s):  
Transition Metal ◽  
Transition Metal Dichalcogenides ◽  
Transition Metal Dichalcogenide ◽  
Layer Transition ◽  
General Terms ◽  
Indirect Excitons ◽  
Metal Dichalcogenides ◽  
Experimental Findings ◽  
Experimental And Theoretical Studies

Abstract The optical properties of monolayer and bilayer transition metal dichalcogenide semiconductors are governed by excitons in different spin and valley configurations, providing versatile aspects for van der Waals heterostructures and devices. Here, we present experimental and theoretical studies of exciton energy splittings in external magnetic field in neutral and charged WSe2 monolayer and bilayer crystals embedded in a field effect device for active doping control. We develop theoretical methods to calculate the exciton g-factors from first principles for all possible spin-valley configurations of excitons in monolayer and bilayer WSe2 including valley-indirect excitons. Our theoretical and experimental findings shed light on some of the characteristic photoluminescence peaks observed for monolayer and bilayer WSe2. In more general terms, the theoretical aspects of our work provide additional means for the characterization of single and few-layer transition metal dichalcogenides, as well as their heterostructures, in the presence of external magnetic fields.

Theoretical characterization of the electronic properties of heterogeneous vertical stacks of 2D metal dichalcogenides containing one doped layer

2020 ◽  
Vol 22 (25) ◽  
pp. 14088-14098
Author(s):  
Amine Slassi ◽  
David Cornil ◽  
Jérôme Cornil
Keyword(s):  
Transition Metal ◽  
Electronic Properties ◽  
Van Der Waals ◽  
Transition Metal Dichalcogenides ◽  
Optoelectronic Devices ◽  
Metal Dichalcogenides ◽  
Theoretical Characterization ◽  
New Generation

The rise of van der Waals hetero-structures based on transition metal dichalcogenides (TMDs) opens the door to a new generation of optoelectronic devices.

scholarly journals Lineshape characterization of excitons in monolayer WS2 by two-dimensional electronic spectroscopy

2020 ◽  
Vol 2 (6) ◽  
pp. 2333-2338
Author(s):  
Liang Guo ◽  
Chun-An Chen ◽  
Zhuquan Zhang ◽  
Daniele M. Monahan ◽  
Yi-Hsien Lee ◽  
...  
Keyword(s):  
Transition Metal ◽  
Electronic Spectroscopy ◽  
Transition Metal Dichalcogenides ◽  
Two Dimensional ◽  
Metal Dichalcogenides

Two-dimensional electronic spectroscopy (2DES) provides dual perspectives for characterizing exciton lineshape in monolayer transition metal dichalcogenides (TMDCs), allowing discrimination of homogeneous and inhomogeneous linewidths.

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