Nanocrystal solids represent an exciting new class of materials. These are often referred
to as artificial solids, in which the nanocrystals take the place of atoms in traditional solids.
This thesis reports the utility of field-effect transistor measurements to elucidate
charge transport parameters, such as charge carrier density and charge carrier mobility
in a nanocrystal solid. The evolution of these parameters with chemical treatments
is followed and correlated to improved performance in photovoltaic devices. Chemical
treatments are demonstrated to simultaneously engineer interparticle spacing, doping and electronic coupling in nanocrystal solids. The nanocrystal solids are then utilized as building blocks for fabricating all nanocrystal heterostructure. A type-I nanocrystal heterostructure is fabricated to demonstrate efficient electroluminescent device in the
infrared communications wavelength. The device emits at peak wavelength of 1.58 um
with an effciency of 0.5%.
| Identifer | oai:union.ndltd.org:TORONTO/oai:tspace.library.utoronto.ca:1807/11165 |
| Date | 30 July 2008 |
| Creators | Shukla, Harnik |
| Contributors | Sargent, Edward H. |
| Source Sets | University of Toronto |
| Language | en_ca |
| Detected Language | English |
| Type | Thesis |
| Format | 1991475 bytes, application/pdf |
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