University of Notre Dame
Browse
- No file added yet -

Single Nanostructure Visible and Infrared Microscopies

Download (6.04 MB)
thesis
posted on 2018-09-04, 00:00 authored by Rusha Chatterjee

There has been three decades of work on applying single particle emission spectroscopy to semiconductor nanostructures. This technique has proven immensely useful towards uncovering novel photophysics of these systems, normally hidden due to ensemble averaging. However, despite valuable knowledge gleaned, the limitations of single particle emission spectroscopy are now becoming apparent. First and foremost, photoluminescence is not a universal phenomenon, immediately restricting the applicability of this technique to only limited families of nanomaterials. Second, surface defects, and resonant or non-resonant Stokes shifts can complicate interpretations from emission spectra. Finally, photoluminescence offers no insight into the excited state progression of a nanostructure’s electronic structure.

Single particle extinction spectroscopy is an immediate solution towards overcoming these shortcomings. This thesis explains why these measurements are inherently challenging and briefly discusses two of the most popular approaches towards detecting a single nanostructure’s extinction. Next, it describes the greater understanding of one-dimensional cadmium selenide nanostructures, i.e. nanowires and nanorods, derived from these measurements. Finally, it describes a future extension of single particle extinction measurements to the infrared spectrum and discusses the application of infrared microscopies to novel photovoltaic perovskite materials.

History

Date Created

2018-09-04

Date Modified

2018-12-17

Defense Date

2018-08-22

CIP Code

  • 40.0501

Research Director(s)

Masaru K. Kuno

Committee Members

Jeffrey W. Peng Steven Corcelli

Degree

  • Doctor of Philosophy

Degree Level

  • Doctoral Dissertation

Alternate Identifier

1062396874

Library Record

4992627

OCLC Number

1062396874

Program Name

  • Chemistry and Biochemistry

Usage metrics

    Dissertations

    Categories

    No categories selected

    Exports

    RefWorks
    BibTeX
    Ref. manager
    Endnote
    DataCite
    NLM
    DC