A simple approach to analyze layer-dependent optical properties of few-layer transition metal dichalcogenide thin films

2018 ◽  
Vol 30 (3) ◽  
pp. 03LT02 ◽  
Author(s):  
Asma Alkabsh ◽  
Hassana Samassekou ◽  
Dipanjan Mazumdar
Keyword(s):  
Thin Films ◽  
Optical Properties ◽  
Transition Metal ◽  
Simple Approach ◽  
Transition Metal Dichalcogenide ◽  
Layer Transition

Ni-assisted crystallization of few-layer transition metal dichalcogenide ultra-thin films

2019 ◽  
Vol 30 (4) ◽  
pp. 4085-4092 ◽  
Author(s):  
Yang Wang ◽  
Tao Chen ◽  
Tianbao Zhang ◽  
Hao Zhu ◽  
Lin Chen ◽  
...  
Keyword(s):  
Thin Films ◽  
Transition Metal ◽  
Transition Metal Dichalcogenide ◽  
Layer Transition

Twist-Angle-Dependent Optoelectronics in a Few-Layer Transition-Metal Dichalcogenide Heterostructure

2018 ◽  
Vol 11 (2) ◽  
pp. 2470-2478 ◽  
Author(s):  
Woosuk Choi ◽  
Imtisal Akhtar ◽  
Malik Abdul Rehman ◽  
Minwook Kim ◽  
Dongwoon Kang ◽  
...  
Keyword(s):  
Transition Metal ◽  
Twist Angle ◽  
Transition Metal Dichalcogenide ◽  
Layer Transition

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.

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