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You searched for +publisher:"University of Notre Dame" +contributor:("Masaru Kuno, Research Director"). One record found.

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University of Notre Dame

1. Matthew P. McDonald. Absorption and emission spectroscopy of individual semiconductor nanostructures</h1>.

Degree: Chemistry, 2016, University of Notre Dame

The advent of controllable synthetic methods for the production of semiconductor nanostructures has led to their use in a host of applications, including light-emitting diodes, field effect transistors, sensors, and even television displays. This is, in part, due to the size, shape, and morphologically dependent optical and electrical properties that make this class of materials extremely customizable; wire-, rod- and sphere-shaped nanocrystals are readily synthesized through common wet chemical methods. Most notably, confining the physical dimension of the nanostructure to a size below its Bohr radius (aB) results in quantum confinement effects that increase its optical energy gap. Not only the size, but the shape of a particle can be exploited to tailor its optical and electrical properties. For example, confined CdSe quantum dots (QDs) and nanowires (NWs) of equivalent diameter possess significantly different optical gaps. This phenomenon has been ascribed to electrostatic contributions arising from dielectric screening effects that are more pronounced in an elongated (wire-like) morphology. Semiconducting nanostructures have thus received significant attention over the past two decades. However, surprisingly little work has been done to elucidate their basic photophysics on a single particle basis. What has been done has generally been accomplished through emission-based measurements, and thus does not fully capture the full breadth of these intriguing systems. What is therefore needed then are absorption-based studies that probe the size and shape dependent evolution of nanostructure photophysics. This thesis summarizes the single particle absorption spectroscopy that we have carried out to fill this knowledge gap. Specifically, the diameter-dependent progression of one-dimensional (1D) excitonic states in CdSe NWs has been revealed. This is followed by a study that focuses on the polarization selection rules of 1D excitons within single CdSe NWs. Finally, shape effects are explored by probing the absorption spectra of CdSe nanowires and nanorods of varying length. All experimental studies are complemented by theoretical predictions from an effective mass model that takes electrostatic interactions into account. Thus, this thesis seeks to show the delicate interplay between quantum confinement and dielectric screening effects in single CdSe nanostructures. Advisors/Committee Members: Masaru Kuno, Research Director, S. Alex Kandel, Committee Member, Zachary Schultz, Committee Member.

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6th Edition):

McDonald, M. P. (2016). Absorption and emission spectroscopy of individual semiconductor nanostructures</h1>. (Thesis). University of Notre Dame. Retrieved from https://curate.nd.edu/show/1v53jw84345

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16th Edition):

McDonald, Matthew P.. “Absorption and emission spectroscopy of individual semiconductor nanostructures</h1>.” 2016. Thesis, University of Notre Dame. Accessed July 15, 2020. https://curate.nd.edu/show/1v53jw84345.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7th Edition):

McDonald, Matthew P.. “Absorption and emission spectroscopy of individual semiconductor nanostructures</h1>.” 2016. Web. 15 Jul 2020.

Vancouver:

McDonald MP. Absorption and emission spectroscopy of individual semiconductor nanostructures</h1>. [Internet] [Thesis]. University of Notre Dame; 2016. [cited 2020 Jul 15]. Available from: https://curate.nd.edu/show/1v53jw84345.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

McDonald MP. Absorption and emission spectroscopy of individual semiconductor nanostructures</h1>. [Thesis]. University of Notre Dame; 2016. Available from: https://curate.nd.edu/show/1v53jw84345

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

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