Neema Rafizadeh
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View article: Transient Absorption Spectroscopy of NbOI$_2$
Transient Absorption Spectroscopy of NbOI$_2$ Open
NbOI$_2$ has recently emerged as a new van der Waals material combining semiconducting behavior with intrinsic in plane ferroelectricity and pronounced transport and optical anisotropy. However, its photocarrier dynamics remain largely une…
View article: Ultrafast and Highly Mobile Photocarriers in Monolayer WSe<sub>2</sub> Doped by α-RuCl<sub>3</sub>
Ultrafast and Highly Mobile Photocarriers in Monolayer WSe<sub>2</sub> Doped by α-RuCl<sub>3</sub> Open
We report an experimental investigation of photocarrier dynamics in a heterostructure formed by a WSe2 monolayer stacked on a multilayer α-RuCl3 flake. The samples were fabricated using mechanical exfoliation and dry …
View article: Type-I and type-II interfaces in a MoSe2/WS2 van der Waals heterostructure
Type-I and type-II interfaces in a MoSe2/WS2 van der Waals heterostructure Open
We report experimental evidence that MoSe2 and WS2 allow the formation of type-I and type-II interfaces, according to the thickness of the former. Heterostructure samples are obtained by stacking a monolayer WS2 flake on top of a MoSe2 fla…
View article: Transient absorption measurements of excitonic dynamics in <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:mrow><mml:mn>3</mml:mn><mml:mi>R</mml:mi></mml:mrow><mml:mtext>−</mml:mtext><mml:msub><mml:mrow><mml:mi>MoS</mml:mi></mml:mrow><mml:mn>2</mml:mn></mml:msub></mml:math>
Transient absorption measurements of excitonic dynamics in Open
The excitonic dynamics in MoS2 monolayer, bilayer, and bulk flakes with different stacking orders, namely 3R and 2H, are investigated through transient absorption spectroscopy at room temperature. Samples are obtained by the mec…
View article: Janus Monolayers for Ultrafast and Directional Charge Transfer in Transition Metal Dichalcogenide Heterostructures
Janus Monolayers for Ultrafast and Directional Charge Transfer in Transition Metal Dichalcogenide Heterostructures Open
Charge transfer properties of van der Waals heterostructures formed by Janus and regular transition metal dichalcogenide monolayers are studied by time-resolved pump-probe measurements and photoluminescence spectroscopy. Measurements of el…