Matches in SemOpenAlex for { <https://semopenalex.org/work/W4229062222> ?p ?o ?g. }
- W4229062222 abstract "A Schottky barrier, formed in the contact of a two-dimensional (2D) semiconductor and metal electrode, seriously degrades device performance. Herein, we propose a dipole-engineering strategy to regulate the electronic contact properties of a 2D polar $mathrm{Sb}$X (X = $mathrm{P}$, $mathrm{As}$, $mathrm{Bi}$) and graphene ($mathrm{Gr}$) van der Waals interface. Owing to the mirror asymmetry of $mathrm{Sb}$X, we construct seven vertical heterostructures in the form of X$mathrm{Sb}$-$mathrm{Gr}$ and $mathrm{Sb}$X$text{ensuremath{-}}mathrm{Gr}$. Tunable Schottky barrier height and contact type can be obtained by using different atomic terminals to contact with $mathrm{Gr}$. Based on the first-principles calculations, the dipole and its associated potential step are found to be responsible for the regulating effect. Moreover, owing to the remarkable properties of the $mathrm{Sb}mathrm{Bi}$-$mathrm{Gr}$ heterostructure, such as Ohmic contact and low tunneling barrier, we design an optoelectronic field-effect transistor, which exhibits considerable responsivity (0.089 ${mathrm{AW}}^{ensuremath{-}1}$) and external quantum efficiency (28.57%). Our findings further confirm that regulating the electronic contact properties by the dipole in the heterostructure is a feasible strategy, which provides meaningful guidance for designing high-performance electronic and optoelectronic devices." @default.
- W4229062222 created "2022-05-08" @default.
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- W4229062222 date "2022-05-05" @default.
- W4229062222 modified "2023-10-05" @default.
- W4229062222 title "Dipole-Engineering Strategy for Regulating the Electronic Contact of a Two-Dimensional <mml:math xmlns:mml=http://www.w3.org/1998/Math/MathML display=inline overflow=scroll><mml:mi>Sb</mml:mi></mml:math> <i>X</i> /Graphene ( <i>X</i> = <mml:math xmlns:mml=http://www.w3.org/1998/Math/MathML display=inline overflow=scroll><mml:mrow><mml:mrow><mml:mi mathvariant=normal>P</mml:mi></mml:mrow></mml:mrow></mml:math> , <mml:math xmlns:mml=http://www.w3.org/1998/Math/MathML display=…" @default.
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- W4229062222 doi "https://doi.org/10.1103/physrevapplied.17.054009" @default.
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