Electrical Characterization, Transport, and Doping Effects in Two-Dimensional Transition Metal Oxides
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Case Western Reserve University School of Graduate Studies / OhioLINK
2020
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| Online Access: | http://rave.ohiolink.edu/etdc/view?acc_num=case1597327584506971 |
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ndltd-OhioLink-oai-etd.ohiolink.edu-case15973275845069712021-08-16T05:10:40Z Electrical Characterization, Transport, and Doping Effects in Two-Dimensional Transition Metal Oxides Crowley, Kyle McKinley Physics Condensed Matter Physics Materials Science condensed matter physics semiconductor materials science oxide 2D doping transition metal oxide transistor FET electrical characterization transport V2O5 LiCoO2 MoO3 van der waals mobility conductivity resistivity Within the past decade or so, semiconductor physics has turned a keen eye on two dimensional systems, with the pivotal investigation of atomically thin carbon films. The remarkable figures of merit produced by graphene in electronic and electrochemical applications, in contrast to bulk carbon properties, are indicative of the potential that layered materials might possess in their own right. Transition metal oxides offer a relatively unexplored facet of 2D semiconductor technology; these materials are often overlooked due to their wide band gaps when considering new subjects for nanostructure study. However, oxides offer a library of interesting properties, many of which are still not fully understood, and can be easily modified through doping to engineer new characteristics. Herein, three studies are discussed, where characterization of layered oxides, modified via various methods of doping, result in unique behaviors. The first study involves varying oxygen stoichiometry in α-MoO<sub>3</sub>, where transport is controlled by quantifiable reduction of grown α-MoO<sub>3</sub> nanoflakes. The second details the study of Li<sub>x</sub>CoO<sub>2</sub>, the staple cathode material used in lithium-ion batteries. This material exhibits unique charge-ordering phenomena as a function of lithium content, and is explored in its few-layer, single-crystal form for the first time. Finally, V<sub>2</sub>O<sub>5</sub> is investigated, which displays p-type characteristics and a surface scattering effect when partially doped with sodium. The band structure is analyzed to explain these behaviors. The findings of these studies may play a key role in engineering thin oxide systems for future electronics applications. 2020-09-02 English text Case Western Reserve University School of Graduate Studies / OhioLINK http://rave.ohiolink.edu/etdc/view?acc_num=case1597327584506971 http://rave.ohiolink.edu/etdc/view?acc_num=case1597327584506971 unrestricted This thesis or dissertation is protected by copyright: all rights reserved. It may not be copied or redistributed beyond the terms of applicable copyright laws. |
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NDLTD |
| language |
English |
| sources |
NDLTD |
| topic |
Physics Condensed Matter Physics Materials Science condensed matter physics semiconductor materials science oxide 2D doping transition metal oxide transistor FET electrical characterization transport V2O5 LiCoO2 MoO3 van der waals mobility conductivity resistivity |
| spellingShingle |
Physics Condensed Matter Physics Materials Science condensed matter physics semiconductor materials science oxide 2D doping transition metal oxide transistor FET electrical characterization transport V2O5 LiCoO2 MoO3 van der waals mobility conductivity resistivity Crowley, Kyle McKinley Electrical Characterization, Transport, and Doping Effects in Two-Dimensional Transition Metal Oxides |
| author |
Crowley, Kyle McKinley |
| author_facet |
Crowley, Kyle McKinley |
| author_sort |
Crowley, Kyle McKinley |
| title |
Electrical Characterization, Transport, and Doping Effects in Two-Dimensional Transition Metal Oxides |
| title_short |
Electrical Characterization, Transport, and Doping Effects in Two-Dimensional Transition Metal Oxides |
| title_full |
Electrical Characterization, Transport, and Doping Effects in Two-Dimensional Transition Metal Oxides |
| title_fullStr |
Electrical Characterization, Transport, and Doping Effects in Two-Dimensional Transition Metal Oxides |
| title_full_unstemmed |
Electrical Characterization, Transport, and Doping Effects in Two-Dimensional Transition Metal Oxides |
| title_sort |
electrical characterization, transport, and doping effects in two-dimensional transition metal oxides |
| publisher |
Case Western Reserve University School of Graduate Studies / OhioLINK |
| publishDate |
2020 |
| url |
http://rave.ohiolink.edu/etdc/view?acc_num=case1597327584506971 |
| work_keys_str_mv |
AT crowleykylemckinley electricalcharacterizationtransportanddopingeffectsintwodimensionaltransitionmetaloxides |
| _version_ |
1719460025628360704 |