Analysis of the 3D distribution of self-assembled stacked quantum dots by electron tomography

TL;DR

This study employs electron tomography to accurately analyze the three-dimensional distribution of self-assembled stacked quantum dots, highlighting the limitations of traditional 2D methods and emphasizing the importance of 3D analysis for device optimization.

Contribution

The paper introduces a combined specimen preparation and electron tomography method for 3D distribution measurement of quantum dots, improving accuracy over conventional 2D techniques.

Findings

3D analysis provides more reliable distribution data than 2D methods

Conventional 2D measurements are unreliable for quantum dot distribution

3D distribution insights can optimize optoelectronic device performance

Abstract

This paper has been withdrawn by the authors. The 3D distribution of self-assembled stacked quantum dots (QDs) is a key parameter to obtain the highest performance in a variety of optoelectronic devices. In this work, we have measured this distribution in 3D using a combined procedure of needle-shape specimen preparation and electron tomography. We show that conventional 2D measurements of the distribution of QDs are not reliable, and only a 3D analysis allows an accurate correlation between the growth design and the structural characteristics.