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Applications of emerging optoelectronic materials : lead sulphide quantum dots and steam cracker tar

Author(s)
Morris, Owen P.(Owen Paul)
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Other Contributors
Massachusetts Institute of Technology. Department of Materials Science and Engineering.
Advisor
Jeffrey C. Grossman.
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MIT theses are protected by copyright. They may be viewed, downloaded, or printed from this source but further reproduction or distribution in any format is prohibited without written permission. http://dspace.mit.edu/handle/1721.1/7582
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Abstract
Optoelectronics covers a wide and varied field of devices and applications, with many requiring different material properties for operation and manufacturing. In this thesis, I describe work performed over the course of my degree to improve the performance and understanding of various optoelectronic materials. In particular, I, with the help of my collegues and collaborators, have focused on two materials with emerging applications in optoelectronic devices: lead sulphide quantum dots (PbS QDs), quantum confined materials primarily used in photovoltaics; and steam cracker tar (SCT), a petrochemical by-product that at the outset of this work was simply a waste product, with no electronic applications demonstrated. This thesis documents the progress made in five distinct projects: the development of direct nanoimprinting as a nanoscale patterning method for PbS QDs and other nanoparticles; experimental and computational work to improve our understanding of the anomalously large Stokes shift in PbS QDs; the development of a novel processing method to produce optoelectronic films from SCT and the demonstration of first applications; an in depth study of SCT as a material for windscreen de-icing, including a demonstration prototype and a technoeconomic analysis; and further optoelectronic study of SCT with the aim of evaluating its potential for use in more complex, active optoelectronics. Finally, this thesis concludes with an outlook on the future prospects of these materials and suggestions for continuing research.
Description
Thesis: Ph. D., Massachusetts Institute of Technology, Department of Materials Science and Engineering, 2019
 
Cataloged from PDF version of thesis.
 
Includes bibliographical references (pages 125-140).
 
Date issued
2019
URI
https://hdl.handle.net/1721.1/122177
Department
Massachusetts Institute of Technology. Department of Materials Science and Engineering
Publisher
Massachusetts Institute of Technology
Keywords
Materials Science and Engineering.

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