Characterization of encapsulated quantum dots via electron channeling contrast imaging
Abstract
A method for characterization of encapsulated epitaxial quantum dots (QD) in plan-view geometry using electron channeling contrast imaging (ECCI) is presented. The efficacy of the method, which requires minimal sample preparation, is demonstrated with proof-of-concept data from encapsulated (sub-surface) epitaxial InAs QDs within a GaAs matrix. Imaging of the QDs under multiple diffraction conditions is presented, establishing that ECCI can provide effectively identical visualization capabilities as conventional two-beam transmission electron microscopy. This method facilitates rapid, non-destructive characterization of sub-surface QDs giving immediate access to valuable nanostructural information.
Document Details
- Document Type
- Pub Defense Publication
- Publication Date
- Aug 08, 2016
- Source ID
- 10.1063/1.4960643
Entities
People
- David W McComb
- Julia I. Deitz
- Marc Degraef
- Santino D. Carnevale
- Tyler J. Grassman
Organizations
- Air Force Research Laboratory
- Carnegie Mellon University
- Ohio State University