Index Catalog // Arch : Northwestern University Institutional Repository

Description:: Thermoelectric (TE) materials has been drawn broad attention given that it can enable direct conversion between thermal and electrical energies, hence is treated as a vital candidate for clean power generation as well as waste heat recycling. However, the energy conversion efficiency of TE devices used nowadays is still very...
Keyword:: Nanostructure, Lead Chalcogenide, Thermoelectric, and Electron Microscopy
Subject:: Materials Science
Creator:: Cai, Songting
Owner:: Scholarly Digital Publishing
Language:: en
Date Uploaded:: 10/06/2021
Date Created:: 2021-01-01
Resource Type:: Dissertation
Alternate Identifier:: etdadmin_upload_829997 and http://dissertations.umi.com/northwestern:15626

Description:: The effect of interfaces in solids on the overall charge transport properties has become a topic of growing importance for energy materials such as thermoelectrics. In some polycrystalline thermoelectric materials, the performance near room temperature is significantly limited due to thermally-activated electrical conductivity near room-temperature, which can be attributed to...
Keyword:: Contact resistance, Grain boundary, Charge transport model, Thermoelectric, Mg3Sb2, and NMC
Subject:: Physics and Materials Science
Creator:: Kuo, Jimmy
Owner:: Scholarly Digital Publishing
Language:: en
Date Uploaded:: 04/15/2021
Date Created:: 2021-01-01
Resource Type:: Dissertation
Alternate Identifier:: http://dissertations.umi.com/northwestern:15489 and etdadmin_upload_797891

Description:: Thermoelectric materials are of particular interest in a variety of fields because of their ability to directly convert heat to electricity (and vice versa), however, they struggle to gain widespread adoption because of their low efficiency. A common strategy in the field of thermoelectricity is to introduce material defects into...
Keyword:: Mesoscale, Doping, Thermoelectric, EBSD, Electron Microscopy, and Semiconductor
Subject:: Materials Science and Energy
Creator:: Grovogui, Jann Albert
Owner:: Scholarly Digital Publishing
Language:: en
Date Uploaded:: 02/01/2021
Date Created:: 2020-01-01
Resource Type:: Dissertation
Alternate Identifier:: http://dissertations.umi.com/northwestern:15371 and etdadmin_upload_779059

Description:: Given directives such as the UN Global Goals targeting sustainable development, the research presented herein makes but a small contribution to the advancement of alternative energy technologies. Nevertheless, the present work was largely motivated to address specific points of intrigue within the thermoelectrics community. The general principles demonstrated, however, may...
Keyword:: Heat Capacity, Thermal Conductivity, Thermoelectric, Thermodynamics, Thermal Expansion, and Phase Transition
Subject:: Physics, Materials Science, and Thermodynamics
Creator:: Agne, Matthias Thomas
Owner:: Scholarly Digital Publishing
Language:: en
Date Uploaded:: 02/01/2021
Date Created:: 2020-01-01
Resource Type:: Dissertation
Alternate Identifier:: http://dissertations.umi.com/northwestern:15127 and etdadmin_upload_743939

Description:: A significant portion of material science research is concerned with understanding theway that defects affect the properties materials. In the field of thermoelectrics introducingor removing point (0D), dislocation (1D), grain boundary (2D), or precipitate (3D) defectsare popular methods for altering a materials thermoelectric efficiency. Herein I discussdifferent studies conducted during...
Keyword:: Saturation Annealing, Band Engineering, Point Defect, Thermoelectric, and Phase Boundary Mapping
Subject:: Materials Science
Creator:: Wood, Maxwell
Owner:: Scholarly Digital Publishing
Language:: en
Date Uploaded:: 02/01/2021
Date Created:: 2020-01-01
Resource Type:: Dissertation
Alternate Identifier:: etdadmin_upload_773176 and http://dissertations.umi.com/northwestern:15347

Description:: In the United States and around the world, the growing energy demands and climate concerns necessitate renewable and efficient energy production. Thermoelectric materials could be one small part of this larger picture movement, but their high cost and low efficiency must be improved to realize commercial use. To decrease the...
Keyword:: experimental, semi-empirical model, carrier concentration, dopability, Thermoelectric, and statistical and machine learning
Subject:: Materials Science
Creator:: Miller, Samuel A
Owner:: Scholarly Digital Publishing
Language:: en
Date Uploaded:: 02/12/2020
Date Created:: 2018-01-01
Resource Type:: Dissertation
Alternate Identifier:: etdadmin_upload_612765 and http://dissertations.umi.com/northwestern:14381

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