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Electronic transport characteristics and nanodevice designs for β-HfNCl monolayer.
- Source :
- Results in Physics; Feb2024, Vol. 57, pN.PAG-N.PAG, 1p
- Publication Year :
- 2024
-
Abstract
- • The β -HfNCl monolayer has isotropic mechanical properties. • The pn -junction diodes and pin -junction field-effect transistors of β -HfNCl monolayer have strong rectification effect and electrical anisotropy. • The pin -junction field-effect transistors of β -HfNCl monolayer show an obvious field-effect behavior. • The pin -junction phototransistors β -HfNCl monolayer have a strong response to ultraviolet light. The mechanical properties, electronic structure, electric transport and optoelectronic properties of a recently predicted wide bandgap semiconductor β -HfNCl monolayer are systematically studied by means of first-principles calculations. β -HfNCl monolayer is isotropic in mechanical properties, whose calculated Young's modulus, shear modulus, and layer modulus of β -HfNCl monolayer are 128.9–129.2, 44.28, and 119.46 N m<superscript>−1</superscript>, respectively. An appropriate tensile strain (i.e., beyond 3 %) can induce a transition from indirect bandgap to direct bandgap. In addition, we construct several conceptual nanodevice structures based on β -HfNCl monolayer, such as pn- junction diodes, pin- junction field-effect transistors (FETs) and phototransistors. The electronic transport results reveal that the pn- junction diodes have obvious rectification effect and strong electric anisotropy. Their rectification ratios and electric anisotropy ratio (η) can reach up to 10<superscript>6</superscript> and 3.69, respectively. The FETs have an obvious field-effect behavior with a slightly lower rectification ratio (1 0 <superscript>5</superscript>). Moreover, we investigate the photoelectric response of the phototransistors of β -HfNCl monolayer under the illumination of light. They have a strong response to the light whose energy is larger than the violet light, indicating that the β -HfNCl monolayer can be a platform to detect the ultraviolet light. These findings provide crucial insights into the potential applications of β -HfNCl monolayer in electronic and optoelectronic devices. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 22113797
- Volume :
- 57
- Database :
- Supplemental Index
- Journal :
- Results in Physics
- Publication Type :
- Academic Journal
- Accession number :
- 175452098
- Full Text :
- https://doi.org/10.1016/j.rinp.2024.107360