Binary superlattices of semiconductor nanocrystals : a path towards possible high-temperature superconductivity

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Publication Type honors thesis
School or College College of Science
Department Chemistry
Faculty Mentor Michael H. Bartl
Creator Burga, Carlos Alberto
Title Binary superlattices of semiconductor nanocrystals : a path towards possible high-temperature superconductivity
Year graduated 2013
Date 2013-05
Description This thesis provides a platform to experimentally test Dr. Daniel Mattis' theoretical work on the possible superconductive behavior of nanostructured intrinsic semiconductors1-2. The theoretical work hinged on the nano-scale architecture of semiconductors. Therefore, using various types of semiconductor nanocrystals, i.e., quantum dots, to correspond to Dr. Mattis' single electron models, nanoscale structures were formed by self-assembly methods based on the architecture suggested. In detail, various nanocrystal lattices and binary superlattice combinations were studied. In this work, superlattice combinations of palladium (Pd), gamma iron (III) oxide (y-Fe2O3), lead selenide (PbSe) and cadmium selenide (CdSe) nanocrystals were studied as possible material platforms. These nanocrystals were chosen based on their properties as well as their reported ability to form the desired superlattices. The nanocrystals were synthesized through various metal-organic colloidal nucleation-and-growth-based methods. The superlattice formation, in terms of ordering range and uniformity, was studied by transmission electron microscopy. The best results were obtained with the combination of cadmium selenide and lead selenide nanocrystals in an approximate 12 to 1 molar ratio. The optimization of this superlattice then allows for a sufficiently adequate experimental evidence for Dr. Mattis' theory.
Type Text
Publisher University of Utah
Subject Semiconductor nanocrystals; Superconductivity; Superlattices as materials
Language eng
Rights Management (c) Carlos Alberto Burga
Format Medium application/pdf
Format Extent 507,957 bytes
Permissions Reference URL https://collections.lib.utah.edu/details?id=1250859
ARK ark:/87278/s63v2sgm
Setname ir_htoa
ID 205826
Reference URL https://collections.lib.utah.edu/ark:/87278/s63v2sgm
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