Journal article
Subsurface Imaging of Coupled Carrier Transport in GaAs/AlGaAs Core-Shell Nanowires
Nano letters, v 15(1)
01 Jan 2015
PMID: 25545191
Featured in Collection : UN Sustainable Development Goals @ Drexel
Abstract
We demonstrate spatial probing of carrier transport within GaAs/AlGaAs coreshell nanowires with nanometer lateral resolution and subsurface sensitivity by energy-variable electron beam induced current imaging. Carrier drift that evolves with applied electric field is distinguished from a coupled drift-diffusion length. Along with simulation of injected electron trajectories, combining beam energy tuning with precise positioning for selective probing of core and shell reveals axial position- and bias-dependent differences in carrier type and transport along parallel conduction channels. These results indicate how analysis of transport within heterostructured nanomaterials is no longer limited to nonlocal or surface measurements.
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Details
- Title
- Subsurface Imaging of Coupled Carrier Transport in GaAs/AlGaAs Core-Shell Nanowires
- Creators
- Guannan Chen - Drexel UniversityTerrence McGuckin - Drexel Univ, Dept Mat Sci & Engn, Philadelphia, PA 19104 USAChristopher J. Hawley - Drexel Univ, Dept Mat Sci & Engn, Philadelphia, PA 19104 USAEric M. Gallo - Drexel Univ, Dept Mat Sci & Engn, Philadelphia, PA 19104 USAPaola Prete - Institute for Microelectronics and MicrosystemsIlio Miccoli - Innovation EngineeringNico Lovergine - Innovation EngineeringJonathan E. Spanier - Drexel Univ, Dept Mat Sci & Engn, Philadelphia, PA 19104 USA
- Publication Details
- Nano letters, v 15(1)
- Publisher
- American Chemical Society; Washington, DC
- Number of pages
- 5
- Grant note
- NSF; National Science Foundation (NSF) DMR 0907381; DMR 1124696 / National Science Foundation; National Science Foundation (NSF) Nanoscale Research Initiative of the Semiconductor Research Corporation P200A100117 / US Dept. of Education GAANN-RETAIN program
- Resource Type
- Journal article
- Language
- English
- Academic Unit
- Mechanical Engineering and Mechanics
- Web of Science ID
- WOS:000348086100013
- Scopus ID
- 2-s2.0-84921053712
- Other Identifier
- 991019169108704721
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InCites Highlights
Data related to this publication, from InCites Benchmarking & Analytics tool:
- Collaboration types
- Domestic collaboration
- International collaboration
- Web of Science research areas
- Chemistry, Multidisciplinary
- Chemistry, Physical
- Materials Science, Multidisciplinary
- Nanoscience & Nanotechnology
- Physics, Applied
- Physics, Condensed Matter