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EDP Sciences BIO Web of Conferences 129
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    초록·키워드

    The emergence of fast pixelated direct electron detectors over the last years is allowing experiments in four-dimensional scanning transmission electron microscopy (4D-STEM) that would previously be too slow or noisy to be feasible, for example enabling the assessment of internal electric fields with high spatial resolution and precision[1-4] However, the electric field strength of long range built-in electric fields present in semiconductor devices, for example those associated with p-n junctions, is typically three orders of magnitude smaller than atomic electric fields, making 4D-STEM experiments in such systems challenging.It is therefore interesting to assess the detection limit and signal to noise that can be expected depending on the TEM operation conditions.

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