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

AuthorsHernández-Saz, Jesús; Herrera, Miriam; Alonso-Álvarez, D.; Molina, Sergio I
Issue Date18-Dec-2012
CitationNanoscale Research Letters. 7(1):681- (2012)
AbstractAbstract 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-shaped specimen preparation and electron tomography. We show that conventional 2D measurements of the distribution of QDs are not reliable, and only 3D analysis allows an accurate correlation between the growth design and the structural characteristics.
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