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Updated: Jan 8, 2026
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Quantitative Atomic-Site Analysis of Functional Dopants/Point Defects in Crystalline Materials by Electron-Channeling-Enhanced Microanalysis
Published on: May 10, 2021
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Energy-resolved EBSD using a monolithic direct electron detector
Nicolò M Della Ventura1, Kalani Moore2, McLean P Echlin1
1Materials Department, University of California Santa Barbara, Santa Barbara, CA, USA.
Ultramicroscopy
|December 19, 2025
Summary
This study quantifies backscattered electron (BSE) energies in electron backscatter diffraction (EBSD) patterns. Our new method reveals how BSE energy impacts pattern clarity and crystallographic measurements.
Area of Science:
- Materials Science
- Solid State Physics
- Electron Microscopy
Background:
- Accurate quantification of backscattered electron (BSE) energy distribution in electron backscatter diffraction (EBSD) patterns is a persistent challenge.
- Understanding BSE energy is crucial for interpreting diffraction contrast and enhancing measurement precision.
Purpose of the Study:
- To introduce and validate an energy-resolved EBSD methodology for quantifying individual BSE energies within diffraction patterns.
- To investigate the influence of BSE energy on EBSD pattern quality and crystallographic information.
Main Methods:
- Utilized a monolithic active pixel sensor direct electron detector and an electron-counting algorithm for energy-resolved EBSD.
- Calibrated the detector response against primary beam energy and performed measurements on Si(100) with a 12 keV beam.
- Employed Monte Carlo simulations for comparison and analyzed pixel-resolved energy maps.
Main Results:
- Observed a broad BSE energy distribution (down to 3 keV) with angular dependence, matching simulations.
- Identified modulations at Kikuchi band edges and demonstrated significant pattern enhancement using energy filtering.
- Found that BSEs in the 9-10 keV range are key for Kikuchi pattern formation, but lower energy BSEs (2-8 keV) also contribute.
Conclusions:
- The developed energy-resolved EBSD method enables single-electron energy determination, expanding quantitative EBSD capabilities.
- This technique offers potential for deeper understanding of diffraction contrast mechanisms and improved crystallographic measurements.
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