Utilizing trapped charge at bilayer 2D MoS2/SiO2interface for memory applications.
Nanotechnology
; 33(27)2022 Apr 20.
Article
en En
| MEDLINE
| ID: mdl-35344937
ABSTRACT
In this work we use conductive atomic force microscopy (cAFM) to study the charge injection process from a nanoscale tip to a single isolated bilayer 2D MoS2flake. The MoS2is exfoliated and bonded to ultra-thin SiO2/Si substrate. Local current-voltage (IV) measurements conducted by cAFM provides insight in charge trapping/de-trapping mechanisms at the MoS2/SiO2interface. The MoS2nano-flake provides an adjustable potential barrier for embedded trap sites where the charge is injected from AFM tip is confined at the interface. A window of (ΔVâ¼ 1.8 V) is obtain at a reading current of 2 nA between two consecutiveIVsweeps. This is a sufficient window to differentiate between the two states indicating memory behavior. Furthermore, the physics behind the charge entrapment and its contribution to the tunneling mechanisms is discussed.
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1
Colección:
01-internacional
Base de datos:
MEDLINE
Idioma:
En
Revista:
Nanotechnology
Año:
2022
Tipo del documento:
Article
País de afiliación:
Emiratos Árabes Unidos