Surface and Interface Characterization of 2D Materials: Transition Metal Dichalcogenide and Black Phosphorous

dc.contributor.ORCID0000-0003-3556-8096 (Zhu, H)
dc.contributor.advisorWallace, Robert M.
dc.creatorZhu, Hui
dc.date.accessioned2018-04-03T22:07:23Z
dc.date.available2018-04-03T22:07:23Z
dc.date.created2017-12
dc.date.issued2017-12
dc.date.submittedDecember 2017
dc.date.updated2018-04-03T22:07:23Z
dc.description.abstractTransition metal dichalcogenides (TMDs) and black phosphorous (black-P) are representative two dimensional (2D) materials with versatile electronic, optical, physical, and chemical properties that can be manipulated for novel electronic and optoelectronic device applications in nanoscale science and technology. However, many challenges remain associated with the nature of defects, crystal synthesis, thickness control, chemical stabilities, doping strategies, and Schottky contacts. This dissertation focuses on the surface and interface understanding of 2D materials to propose desired attributes and surface engineering to overcome those challenges. In particular, the interfacial qualities between the atomic layer deposited Al₂O₃ and black-P, MoTe₂, or WTe₂ are investigated by in situ X-ray photoelectron spectroscopy to lower the interfacial damage possibility. Then the chemical and structural properties of MoS₂ under remote O₂ plasma and thermal treatments are studied to propose a two-step atomic layer etching method. Also, the thermal and structural properties of MoTe₂ are investigated to avoid thermal damage as well as explore possible phase engineering applications.
dc.format.mimetypeapplication/pdf
dc.identifier.urihttp://hdl.handle.net/10735.1/5697
dc.language.isoen
dc.rightsCopyright ©2017 is held by the author. Digital access to this material is made possible by the Eugene McDermott Library. Further transmission, reproduction or presentation (such as public display or performance) of protected items is prohibited except with permission of the author.
dc.subjectSurface chemistry
dc.subjectNanostructured materials
dc.subjectTransition metal compounds
dc.subjectChalcogenides
dc.subjectPhosphorus
dc.titleSurface and Interface Characterization of 2D Materials: Transition Metal Dichalcogenide and Black Phosphorous
dc.typeDissertation
dc.type.materialtext
thesis.degree.departmentMaterials Science and Engineering
thesis.degree.grantorThe University of Texas at Dallas
thesis.degree.levelDoctoral
thesis.degree.namePHD

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