A5020348370- 2D Materials and Applications
- Quantum Dots Synthesis And Properties
- Perovskite Materials and Applications
- Ferroelectric and Piezoelectric Materials
- Spectroscopy Techniques in Biomedical and Chemical Research
- Graphene research and applications
- Ferroelectric and Negative Capacitance Devices
- Plasmonic and Surface Plasmon Research
- Luminescence Properties of Advanced Materials
- Advanced Memory and Neural Computing
- Nuclear materials and radiation effects
- Gold and Silver Nanoparticles Synthesis and Applications
- Chalcogenide Semiconductor Thin Films
- Glass properties and applications
- MXene and MAX Phase Materials
Washington State University
2018-2023
Abstract Ferroelectric memristors represent a promising new generation of devices that have wide range applications in memory, digital information processing, and neuromorphic computing. Recently, van der Waals ferroelectric In 2 Se 3 with unique interlinked out‐of‐plane in‐plane polarizations has enabled multidirectional resistance switching, providing unprecedented flexibility planar vertical device integrations. However, the operating mechanisms these remained unclear. Here, through...
Two-dimensional (2D) van der Waals materials and related heterostructures have shown a wide variety of novel electronic optoelectronic properties. However, key challenge in fully realizing their potential is general lack manufacturing techniques capable producing desired at large scale. Here, we demonstrate highly scalable direct-laser-writing approach to fabricating in-plane two-dimensional In2Se3 nanolayers. This derives from an optically activated solid–solid phase transition that leads...
We interrogate para-mercaptobenzoic acid (MBA) molecules chemisorbed onto plasmonic silver nanocubes through tip-enhanced Raman (TER) spectral nanoimaging. Through a detailed examination of the spectra, aided by correlation analysis and density functional theory calculations, we find that MBA chemisorbs particles with at least two distinct configurations: S- CO2-bound. High spatial resolution TER mapping allows us to distinguish between adsorption geometries pixel-limited (<5 nm) under...
Exciton localization in transition-metal dichalcogenide monolayers is behind a variety of interesting phenomena and applications, including broad-spectrum solar cells single-photon emissions. Strain fields at the periphery topographically distinct features such as nanoscopic bubbles were recently associated with localized charge-neutral excitons. Here, we use tip-enhanced photoluminescence (PL) to visualize excitons WSe2/MoSe2 heterobilayers (HBL). We find strong optical emission from...
We report, for the first time, direct observation of in-plane (lateral) homojunctions in vertical van der Waals heterostructures and their dominant effect on charge transport properties. Particularly, with an all-van metal–semiconductor Schottky junction (MoS2/β-In2Se3) as a model system, we use scanning gate microscopy to directly visualize homojunction MoS2 channel, formation which is result transfer between β-In2Se3, supported by numerical simulations electrical measurements. Importantly,...
Optically controlled ferroelectricity represents a scalable approach to engineering desirable ferroelectric properties for various device applications. With van der Waals α-In2Se3 being extensively explored optoelectronic memory and photonic neuromorphic computing technologies, an understanding of the light–ferroelectric interactions is necessary but has not been clearly established. In this study, we show significant effects optical illuminations on in α-In2Se3, particularly changes from...
ADVERTISEMENT RETURN TO ISSUEPREVAddition/CorrectionNEXTORIGINAL ARTICLEThis notice is a correctionCorrection to Photodefined In-Plane Heterostructures in Two-Dimensional In2Se3 Nanolayers for Ultrathin PhotodiodesJohn IgoJohn IgoMore by John Igo, Matthew GabelMatthew GabelMore Gabel, Zhi-Gang YuZhi-Gang YuMore Yuhttp://orcid.org/0000-0002-1376-9025, Liangliang YangLiangliang YangMore Yang, and Yi Gu*Yi GuMore Guhttp://orcid.org/0000-0001-7241-9888Cite this: ACS Appl. Nano Mater. 2019, 2,...