Continuous Control and Enhancement of Excitonic Valley Polarization in Monolayer WSe2 by Electrostatic Doping
Sign Up to like & getrecommendations! Published in 2019 at "Advanced Functional Materials"
DOI: 10.1002/adfm.201900260
Abstract: Enhancement and continuous control of the excitonic valley polarization in electrostatically doped monolayer WSe2 are demonstrated. Under excitation with circularly polarized light, 20% valley polarization of excitons around the charge neutrality condition at 70 K… read more here.
Keywords: valley; valley polarization; monolayer wse2; excitonic valley ... See more keywords
Effect of vacancy defect on optoelectronic properties of monolayer tungsten diselenide
Sign Up to like & getrecommendations! Published in 2017 at "Optical and Quantum Electronics"
DOI: 10.1007/s11082-017-1266-2
Abstract: Optoelectronic properties of pristine and vacancy defect monolayer tungsten diselenide (WSe2) have been investigated by the first principles calculations. The results predicate that Se defect monolayer WSe2 is direct semiconductor whereas the W defect monolayer… read more here.
Keywords: vacancy defect; monolayer; optoelectronic properties; defect monolayer ... See more keywords
Orientation domain dispersions in wafer scale epitaxial monolayer WSe2 on sapphire
Sign Up to like & getrecommendations! Published in 2021 at "Applied Surface Science"
DOI: 10.1016/j.apsusc.2021.150798
Abstract: Abstract Monolayer WSe2, a 2D transition metal dichalcogenide (TMDCs), has been demonstrated as a good candidate for potential applications in optoelectronics. It is imperative to know the crystalline quality of WSe2 over the wafer scale… read more here.
Keywords: monolayer wse2; orientation; wafer scale; sapphire ... See more keywords
Computational investigation of structural, magnetic, electronic and optical properties of the cluster Mn-X6 (X=P, S, Cl, Br or Te) doped monolayer WSe2
Sign Up to like & getrecommendations! Published in 2021 at "Thin Solid Films"
DOI: 10.1016/j.tsf.2021.138793
Abstract: Abstarct We perform systematic first-principles calculations to clarify the effects of the cluster Mn-X6 (X=P, S, Cl, Br or Te) doping on the structural, electronic, magnetic and optical properties of monolayer WSe2. The smaller formation… read more here.
Keywords: monolayer wse2; doped monolayer; monolayer; cluster doped ... See more keywords
Polarization Control of Deterministic Single-Photon Emitters in Monolayer WSe2.
Sign Up to like & getrecommendations! Published in 2021 at "Nano letters"
DOI: 10.1021/acs.nanolett.1c00078
Abstract: Single-photon emitters, the basic building blocks of quantum communication and information, have been developed using atomically thin transition metal dichalcogenides (TMDCs). Although the bandgap of TMDCs was spatially engineered in artificially created defects for single-photon… read more here.
Keywords: photon; polarization; emitters monolayer; photon emitters ... See more keywords
Ultrafast Nanoimaging of Electronic Coherence of Monolayer WSe2.
Sign Up to like & getrecommendations! Published in 2023 at "Nano letters"
DOI: 10.1021/acs.nanolett.2c04536
Abstract: Transition-metal dichalcogenides (TMDs) have demonstrated a wide range of novel photonic, optoelectronic, and correlated electron phenomena for more than a decade. However, the coherent dynamics of their excitons, including possibly long dephasing times and their… read more here.
Keywords: coherence monolayer; electronic coherence; ultrafast nanoimaging; coherence ... See more keywords
Polarity tunable trionic electroluminescence in monolayer WSe2.
Sign Up to like & getrecommendations! Published in 2019 at "Nano letters"
DOI: 10.1021/acs.nanolett.9b03215
Abstract: Monolayer WSe2 exhibits luminescence arising from various types of exciton complexes due to strong many-body effects. Here, we demonstrate selective electrical excitation of positive and negative trions in van der Waals metal-insulator-semiconductor (MIS) heterostructure consisting… read more here.
Keywords: polarity tunable; monolayer; tunable trionic; trionic electroluminescence ... See more keywords
Encapsulation of a Monolayer WSe2 Phototransistor with Hydrothermally Grown ZnO Nanorods.
Sign Up to like & getrecommendations! Published in 2019 at "ACS applied materials & interfaces"
DOI: 10.1021/acsami.9b03508
Abstract: Transition metal dichalcogenides (TMDCs) are promising two-dimensional (2D) materials for realizing next-generation electronics and optoelectronics with attractive physical properties. However, monolayer TMDCs (1LTMDCs) have various serious issues, such as instability under ambient conditions and low… read more here.
Keywords: monolayer; wse2 phototransistor; monolayer wse2; phototransistor ... See more keywords
Piezoelectric Modulation of Excitonic Properties in Monolayer WSe2 under Strong Dielectric Screening.
Sign Up to like & getrecommendations! Published in 2021 at "ACS nano"
DOI: 10.1021/acsnano.1c04269
Abstract: We investigate the interaction of excitons in monolayer WSe2 with the piezoelectric field of surface acoustic wave (SAW) at room temperature using photoluminescence (PL) spectroscopy and report a large in-plane exciton polarizability of 8.43 ±… read more here.
Keywords: excitonic properties; dielectric screening; field; strong dielectric ... See more keywords
Evidence of indirect gap in monolayer WSe2
Sign Up to like & getrecommendations! Published in 2017 at "Nature Communications"
DOI: 10.1038/s41467-017-01012-6
Abstract: Monolayer transition metal dichalcogenides, such as MoS2 and WSe2, have been known as direct gap semiconductors and emerged as new optically active materials for novel device applications. Here we reexamine their direct gap properties by… read more here.
Keywords: gap; monolayer; evidence indirect; monolayer wse2 ... See more keywords
Odd- and even-denominator fractional quantum Hall states in monolayer WSe2
Sign Up to like & getrecommendations! Published in 2020 at "Nature Nanotechnology"
DOI: 10.1038/s41565-020-0685-6
Abstract: Monolayer semiconducting transition-metal dichalcogenides (TMDs) represent a unique class of two-dimensional (2D) electron systems. Their atomically thin structure facilitates gate tunability just like graphene does, but unlike graphene, TMDs have the advantage of a sizable… read more here.
Keywords: quantum; quantum hall; fractional quantum; monolayer wse2 ... See more keywords