Date of Award

2018

Document Type

Campus Access Dissertation

Degree Name

Doctor of Philosophy in Physics (PhD)

Administrative Home Department

Department of Physics

Advisor 1

Yoke Khin Yap

Committee Member 1

Ravindra Pandey

Committee Member 2

John Jaszczak

Committee Member 3

Paul Bergstrom

Abstract

One and two-dimensional hexagonal boron nitride (h-BN) nanomaterials are wide bandgap semiconductors (~6 eV). This large bandgap is in contrast with their corresponding carbon counterparts, for instance, graphene is metallic while carbon nanotubes are semiconducting or metallic depending upon their tube diameter and chirality. The insulating nature of boron nitride nanotubes (BNNTs) has hindered their application in the electronic field despite the superior physical and chemical properties. Our results have shown that BNNTs functionalized with metallic quantum dots have shown their potential as a tunneling field effect transistors (TFETs) devices. Moreover, BNNTs functionalized with carbon nanotubes (CNTs), and molecular carbon has shown potential as digital switches. In this dissertation, methods of functionalizing BNNTs by metallic quantum dots and carbon nanomaterials are discussed. Furthermore, synthesis of other h-BN nanomaterials has been explored. Using the well-established chemical vapor deposition technique, boron nitride nanosheets (BNNSs) and boron nitride nanoribbons (BNNRs) have been synthesized. Towards the end, an outlook on the synthesis of boron nanomaterial is provided.

Available for download on Wednesday, April 15, 2020

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