A Solution-Based Approach to Semiconductor Nanowires

Master's Thesis

Abstract

The solution phase synthesis of narrow diameter (< 10 nm) straight and branched CdSe and PbSe nanowires (NWs) is described. Crystalline NWs with lengths up to 10 microns are grown in solution, where NW growth is initiated by Au/Bi core/shell nanoparticles (NPs). These NPs have diameters less than 5 nm and are catalytically active towards the growth of similar diameter NWs. Such wires may exhibit quantum confinement effects since the exciton Bohr radius of CdSe (PbSe) is 5.6 (46) nm. Branched NWs are also obtained by varying the reaction conditions, yielding tripod, v-shaped, and y-shaped NWs in the case of CdSe and right angle and t-shape NWs in the case of PbSe. The morphologies obtained in each case emphasize the influence of crystal phase on NW growth. A geminate nucleation mechanism is described to explain NW branching.

Attributes

Attribute NameValues
URN
  • etd-10202005-155200

Author Katherine Leigh Hull
Advisor Gregory V. Hartland
Contributor Dan Meisel, Committee Member
Contributor S. Alex Kandel, Committee Member
Contributor Gregory V. Hartland, Committee Member
Degree Level Master's Thesis
Degree Discipline Chemistry and Biochemistry
Degree Name MS
Defense Date
  • 2005-05-15

Submission Date 2005-10-20
Country
  • United States of America

Subject
  • branching

  • PbSe

  • bismuth

  • gold

  • nanoparticles

  • nanowires

  • CdSe

Publisher
  • University of Notre Dame

Language
  • English

Record Visibility Public
Content License
  • All rights reserved

Departments and Units

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