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Updated: Feb 8, 2026

$Microcrystal Electron Diffraction of Small Molecules$

Microcrystal Electron Diffraction of Small Molecules

Published on: March 15, 2021

Methods for Conducting Electron Backscattered Diffraction (EBSD) on Polycrystalline Organic Molecular Thin Films.

Kevin Abbasi¹, Danqi Wang¹, Michael A Fusella²

¹1Swagelok Center for Surface Analysis of Materials,Case School of Engineering,Case Western Reserve University,Cleveland,OH 44106,USA.

Microscopy and Microanalysis : the Official Journal of Microscopy Society of America, Microbeam Analysis Society, Microscopical Society of Canada

|June 22, 2018

Summary

This study presents a new method for collecting electron backscattered diffraction (EBSD) maps from organic materials. This breakthrough enables detailed structural and compositional analysis of crystalline organic samples previously challenging to study.

Keywords:

EBSD SEM electron backscattered diffraction organic semiconductor thin film orientation mapping

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Area of Science:

Materials Science
Crystallography
Organic Electronics

Background:

Electron backscattered diffraction (EBSD) is vital for inorganic sample analysis.
EBSD on organic materials is hindered by weak Kikuchi patterns and rapid pattern degradation under electron beam exposure.
Low average atomic number in organics contributes to poor signal quality.

Purpose of the Study:

To develop a novel approach for acquiring EBSD maps from organic materials.
To overcome the limitations of low signal intensity and beam sensitivity in organic crystalline samples.
To expand characterization capabilities for crystalline organic materials.

Main Methods:

A new methodology was developed to enable EBSD mapping.
The approach was tested on a hydrocarbon organic molecular thin film.
Simultaneous acquisition with emitting diodes data was explored for comprehensive characterization.

Main Results:

Successful collection of EBSD maps from an organic molecular thin film was achieved.
The new approach overcomes the challenges of weak patterns and dose sensitivity.
Demonstrated feasibility of detailed crystallographic analysis for organic materials.

Conclusions:

The developed method significantly advances the EBSD analysis of organic materials.
This opens new possibilities for structural and compositional characterization of crystalline organics.
Enables in-depth understanding of organic molecular thin films and related materials.