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Strain mapping in selected area electron diffraction method combining a Cs-corrected TEM with a stage scanning

Fumihiko Uesugi¹

¹Toshiba Nanoanalysis Corporation, 8 Shinsugita-cho, Isogo-ku, Yokohama 235-8522, Japan.

Ultramicroscopy

|August 15, 2013

Summary

This summary is machine-generated.

A new electron diffraction method offers high-resolution strain mapping in nanometer-scale regions. This technique utilizes a specialized transmission electron microscope (TEM) and stage scanning for precise analysis of semiconductor devices.

Keywords:

SAED Spherical aberration correction Strain measurement

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Area of Science:

Materials Science
Nanotechnology
Solid State Physics

Background:

Accurate strain measurement is crucial for understanding semiconductor device performance.
Existing methods may lack the spatial resolution required for nanoscale strain analysis.

Purpose of the Study:

To introduce a novel, high-resolution strain mapping method.
To demonstrate the method's validity and flexibility using a strain-induced semiconductor device.

Main Methods:

Utilized a Cs-corrected transmission electron microscope (TEM) with a parallel beam.
Employed a stage scanning system with piezoelectric actuators for electron beam control.
Obtained sharp diffraction patterns from selected nanometer-scale regions.

Main Results:

Achieved high spatial resolution strain mapping.
Demonstrated the method's effectiveness on a current strain-induced semiconductor device.
Verified the sharpness of diffraction spots facilitating accurate strain measurement.

Conclusions:

The proposed method enables precise strain analysis at the nanoscale.
The combination of Cs-corrected TEM and stage scanning offers a powerful tool for materials characterization.
This technique is valuable for the development and analysis of advanced semiconductor devices.